./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:58:04,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:58:04,581 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 12:58:04,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:58:04,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:58:04,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:58:04,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:58:04,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:58:04,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:58:04,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:58:04,611 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:58:04,612 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:58:04,612 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:58:04,613 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:58:04,613 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:58:04,614 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:58:04,614 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:58:04,615 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:58:04,615 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:58:04,616 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:58:04,617 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:58:04,617 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:58:04,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:58:04,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:58:04,619 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:58:04,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:58:04,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:58:04,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:58:04,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:58:04,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:58:04,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:58:04,622 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 12:58:04,622 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:58:04,623 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:58:04,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:58:04,623 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:58:04,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:58:04,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:58:04,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:58:04,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:58:04,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:58:04,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:58:04,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:58:04,625 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:58:04,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:58:04,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:58:04,626 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:58:04,626 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:58:04,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:58:04,626 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_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba [2023-12-02 12:58:04,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:58:04,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:58:04,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:58:04,848 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:58:04,849 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:58:04,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2023-12-02 12:58:07,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:58:07,833 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:58:07,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2023-12-02 12:58:07,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/data/5d28dcbbd/bbf0873fb26149fbb81cbe34e68b9195/FLAG69b0e3530 [2023-12-02 12:58:07,852 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/data/5d28dcbbd/bbf0873fb26149fbb81cbe34e68b9195 [2023-12-02 12:58:07,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:58:07,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:58:07,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:58:07,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:58:07,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:58:07,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:07" (1/1) ... [2023-12-02 12:58:07,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28925005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:07, skipping insertion in model container [2023-12-02 12:58:07,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:07" (1/1) ... [2023-12-02 12:58:07,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:58:08,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:58:08,047 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:58:08,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:58:08,081 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:58:08,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08 WrapperNode [2023-12-02 12:58:08,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:58:08,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:58:08,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:58:08,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:58:08,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,124 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 119 [2023-12-02 12:58:08,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:58:08,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:58:08,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:58:08,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:58:08,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:58:08,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:58:08,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:58:08,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:58:08,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (1/1) ... [2023-12-02 12:58:08,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:58:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:08,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:58:08,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:58:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:58:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:58:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:58:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:58:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:58:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:58:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 12:58:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 12:58:08,292 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:58:08,295 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:58:08,684 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:58:08,719 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:58:08,719 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:58:08,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:58:08 BoogieIcfgContainer [2023-12-02 12:58:08,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:58:08,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:58:08,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:58:08,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:58:08,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:58:07" (1/3) ... [2023-12-02 12:58:08,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26216f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:58:08, skipping insertion in model container [2023-12-02 12:58:08,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:08" (2/3) ... [2023-12-02 12:58:08,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26216f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:58:08, skipping insertion in model container [2023-12-02 12:58:08,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:58:08" (3/3) ... [2023-12-02 12:58:08,750 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound50.c [2023-12-02 12:58:08,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:58:08,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2023-12-02 12:58:08,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:58:08,827 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;@3013e5b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:58:08,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-12-02 12:58:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 65 states have (on average 1.9076923076923078) internal successors, (124), 121 states have internal predecessors, (124), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 12:58:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:58:08,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:08,837 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:08,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:08,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash 91879193, now seen corresponding path program 1 times [2023-12-02 12:58:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:08,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598567329] [2023-12-02 12:58:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:58:09,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:09,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598567329] [2023-12-02 12:58:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598567329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561788249] [2023-12-02 12:58:09,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:58:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:58:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:58:09,042 INFO L87 Difference]: Start difference. First operand has 135 states, 65 states have (on average 1.9076923076923078) internal successors, (124), 121 states have internal predecessors, (124), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:09,080 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2023-12-02 12:58:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:58:09,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 17 [2023-12-02 12:58:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:09,092 INFO L225 Difference]: With dead ends: 195 [2023-12-02 12:58:09,092 INFO L226 Difference]: Without dead ends: 132 [2023-12-02 12:58:09,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:58:09,099 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:09,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:58:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-02 12:58:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-02 12:58:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 64 states have (on average 1.890625) internal successors, (121), 119 states have internal predecessors, (121), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 12:58:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions. [2023-12-02 12:58:09,148 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 17 [2023-12-02 12:58:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:09,149 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions. [2023-12-02 12:58:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2023-12-02 12:58:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 12:58:09,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:09,151 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:09,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:58:09,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:09,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash 91873195, now seen corresponding path program 1 times [2023-12-02 12:58:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:09,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250549333] [2023-12-02 12:58:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:09,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:09,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711519909] [2023-12-02 12:58:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:09,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:09,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:09,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:09,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:58:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:09,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:58:09,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:58:09,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:09,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250549333] [2023-12-02 12:58:09,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711519909] [2023-12-02 12:58:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711519909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:09,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:09,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411339204] [2023-12-02 12:58:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:58:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:09,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:58:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:09,291 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:09,510 INFO L93 Difference]: Finished difference Result 249 states and 265 transitions. [2023-12-02 12:58:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:09,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 17 [2023-12-02 12:58:09,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:09,514 INFO L225 Difference]: With dead ends: 249 [2023-12-02 12:58:09,514 INFO L226 Difference]: Without dead ends: 247 [2023-12-02 12:58:09,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:09,516 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 107 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:09,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 131 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:58:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-02 12:58:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 170. [2023-12-02 12:58:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 97 states have (on average 1.8969072164948453) internal successors, (184), 152 states have internal predecessors, (184), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 12:58:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2023-12-02 12:58:09,539 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 17 [2023-12-02 12:58:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:09,539 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2023-12-02 12:58:09,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2023-12-02 12:58:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:58:09,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:09,540 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:09,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:58:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:09,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:09,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1446898200, now seen corresponding path program 1 times [2023-12-02 12:58:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024109067] [2023-12-02 12:58:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:09,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:09,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205631721] [2023-12-02 12:58:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:09,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:09,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:09,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:09,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:58:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:09,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:58:09,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:58:09,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:09,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:09,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024109067] [2023-12-02 12:58:09,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:09,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205631721] [2023-12-02 12:58:09,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205631721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:09,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:09,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:09,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326878095] [2023-12-02 12:58:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:58:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:58:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:09,844 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:10,047 INFO L93 Difference]: Finished difference Result 247 states and 263 transitions. [2023-12-02 12:58:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:10,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 18 [2023-12-02 12:58:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:10,049 INFO L225 Difference]: With dead ends: 247 [2023-12-02 12:58:10,050 INFO L226 Difference]: Without dead ends: 245 [2023-12-02 12:58:10,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:10,052 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 104 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:10,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 133 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:58:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-02 12:58:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 171. [2023-12-02 12:58:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 98 states have (on average 1.8775510204081634) internal successors, (184), 153 states have internal predecessors, (184), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 12:58:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 214 transitions. [2023-12-02 12:58:10,071 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 214 transitions. Word has length 18 [2023-12-02 12:58:10,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:10,088 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 214 transitions. [2023-12-02 12:58:10,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 214 transitions. [2023-12-02 12:58:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 12:58:10,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:10,090 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:10,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 12:58:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:10,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:10,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1904171187, now seen corresponding path program 1 times [2023-12-02 12:58:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:10,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836854222] [2023-12-02 12:58:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:10,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:10,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439309489] [2023-12-02 12:58:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:10,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:10,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:10,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:10,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:58:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:10,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:58:10,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:58:10,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:10,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:10,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836854222] [2023-12-02 12:58:10,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439309489] [2023-12-02 12:58:10,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439309489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:10,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:10,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:10,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841662647] [2023-12-02 12:58:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:10,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:58:10,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:58:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:10,369 INFO L87 Difference]: Start difference. First operand 171 states and 214 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:10,491 INFO L93 Difference]: Finished difference Result 288 states and 338 transitions. [2023-12-02 12:58:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 19 [2023-12-02 12:58:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:10,494 INFO L225 Difference]: With dead ends: 288 [2023-12-02 12:58:10,494 INFO L226 Difference]: Without dead ends: 280 [2023-12-02 12:58:10,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:10,496 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 100 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:10,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 191 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:58:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-02 12:58:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 224. [2023-12-02 12:58:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 145 states have (on average 1.813793103448276) internal successors, (263), 200 states have internal predecessors, (263), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 12:58:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 305 transitions. [2023-12-02 12:58:10,515 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 305 transitions. Word has length 19 [2023-12-02 12:58:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:10,516 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 305 transitions. [2023-12-02 12:58:10,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 305 transitions. [2023-12-02 12:58:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:58:10,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:10,517 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:10,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:58:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:10,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:10,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash -252440849, now seen corresponding path program 1 times [2023-12-02 12:58:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:10,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885235756] [2023-12-02 12:58:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:10,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:10,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:10,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875073561] [2023-12-02 12:58:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:10,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:10,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:10,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:10,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:58:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:10,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:58:10,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:58:10,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:10,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885235756] [2023-12-02 12:58:10,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875073561] [2023-12-02 12:58:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875073561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:10,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911814718] [2023-12-02 12:58:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:58:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:58:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:10,842 INFO L87 Difference]: Start difference. First operand 224 states and 305 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:11,046 INFO L93 Difference]: Finished difference Result 280 states and 324 transitions. [2023-12-02 12:58:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:11,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2023-12-02 12:58:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:11,049 INFO L225 Difference]: With dead ends: 280 [2023-12-02 12:58:11,049 INFO L226 Difference]: Without dead ends: 273 [2023-12-02 12:58:11,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:11,051 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 90 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:11,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 112 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:58:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-02 12:58:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 228. [2023-12-02 12:58:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 149 states have (on average 1.7651006711409396) internal successors, (263), 204 states have internal predecessors, (263), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 12:58:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 305 transitions. [2023-12-02 12:58:11,066 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 305 transitions. Word has length 21 [2023-12-02 12:58:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:11,067 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 305 transitions. [2023-12-02 12:58:11,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 305 transitions. [2023-12-02 12:58:11,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 12:58:11,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:11,068 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:11,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 12:58:11,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:11,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:11,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash 764268332, now seen corresponding path program 1 times [2023-12-02 12:58:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198013537] [2023-12-02 12:58:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:11,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:11,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439178780] [2023-12-02 12:58:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:11,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:11,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:11,286 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:11,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 12:58:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:11,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:58:11,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:58:11,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:11,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:11,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198013537] [2023-12-02 12:58:11,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:11,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439178780] [2023-12-02 12:58:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439178780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:11,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:11,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:58:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052825146] [2023-12-02 12:58:11,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:11,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:58:11,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:11,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:58:11,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:58:11,362 INFO L87 Difference]: Start difference. First operand 228 states and 305 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:11,849 INFO L93 Difference]: Finished difference Result 273 states and 316 transitions. [2023-12-02 12:58:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:11,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2023-12-02 12:58:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:11,851 INFO L225 Difference]: With dead ends: 273 [2023-12-02 12:58:11,852 INFO L226 Difference]: Without dead ends: 268 [2023-12-02 12:58:11,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:58:11,853 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 171 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:11,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 161 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:58:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-02 12:58:11,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 189. [2023-12-02 12:58:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 115 states have (on average 1.7565217391304349) internal successors, (202), 170 states have internal predecessors, (202), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 12:58:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2023-12-02 12:58:11,864 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 22 [2023-12-02 12:58:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:11,864 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2023-12-02 12:58:11,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:58:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2023-12-02 12:58:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 12:58:11,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:11,865 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:11,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 12:58:12,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:12,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:12,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash 115258569, now seen corresponding path program 1 times [2023-12-02 12:58:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:12,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870834245] [2023-12-02 12:58:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:12,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:12,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:12,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171035621] [2023-12-02 12:58:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:12,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:12,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:12,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 12:58:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:12,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 12:58:12,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:58:12,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 12:58:12,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:12,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870834245] [2023-12-02 12:58:12,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:12,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171035621] [2023-12-02 12:58:12,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171035621] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 12:58:12,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:58:12,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-12-02 12:58:12,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092981364] [2023-12-02 12:58:12,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:12,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:58:12,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:12,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:58:12,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:58:12,421 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 12:58:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:17,248 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2023-12-02 12:58:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:58:17,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2023-12-02 12:58:17,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:17,250 INFO L225 Difference]: With dead ends: 214 [2023-12-02 12:58:17,251 INFO L226 Difference]: Without dead ends: 212 [2023-12-02 12:58:17,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 12:58:17,252 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 236 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 14 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:17,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 153 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 168 Invalid, 7 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 12:58:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-02 12:58:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2023-12-02 12:58:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 131 states have (on average 1.6946564885496183) internal successors, (222), 185 states have internal predecessors, (222), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 12:58:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 258 transitions. [2023-12-02 12:58:17,268 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 258 transitions. Word has length 26 [2023-12-02 12:58:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:17,268 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 258 transitions. [2023-12-02 12:58:17,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 12:58:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 258 transitions. [2023-12-02 12:58:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 12:58:17,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:17,270 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:17,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 12:58:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:17,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:17,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash -721951593, now seen corresponding path program 1 times [2023-12-02 12:58:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:17,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197123918] [2023-12-02 12:58:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:17,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:17,483 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:17,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691960240] [2023-12-02 12:58:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:17,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:17,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:17,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:17,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 12:58:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:17,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 12:58:17,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:58:17,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 12:58:17,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:17,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197123918] [2023-12-02 12:58:17,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:17,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691960240] [2023-12-02 12:58:17,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691960240] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 12:58:17,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:58:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-12-02 12:58:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537553535] [2023-12-02 12:58:17,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:17,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:58:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:58:17,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:58:17,855 INFO L87 Difference]: Start difference. First operand 206 states and 258 transitions. Second operand has 5 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 12:58:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:19,711 INFO L93 Difference]: Finished difference Result 215 states and 262 transitions. [2023-12-02 12:58:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:58:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2023-12-02 12:58:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:19,713 INFO L225 Difference]: With dead ends: 215 [2023-12-02 12:58:19,713 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 12:58:19,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 12:58:19,715 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 233 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:19,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 153 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 12:58:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 12:58:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2023-12-02 12:58:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 133 states have (on average 1.669172932330827) internal successors, (222), 186 states have internal predecessors, (222), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 12:58:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 258 transitions. [2023-12-02 12:58:19,751 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 258 transitions. Word has length 27 [2023-12-02 12:58:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:19,751 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 258 transitions. [2023-12-02 12:58:19,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 12:58:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 258 transitions. [2023-12-02 12:58:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 12:58:19,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:19,752 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:19,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 12:58:19,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:19,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:19,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash -905662837, now seen corresponding path program 1 times [2023-12-02 12:58:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:19,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48806017] [2023-12-02 12:58:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:19,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709533188] [2023-12-02 12:58:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:19,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:19,971 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:19,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 12:58:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:20,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 12:58:20,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 12:58:20,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 12:58:20,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48806017] [2023-12-02 12:58:20,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709533188] [2023-12-02 12:58:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709533188] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:58:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [341166882] [2023-12-02 12:58:20,317 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 12:58:20,317 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:58:20,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:58:20,327 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:58:20,327 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:58:20,951 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 12:58:20,956 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:58:20,958 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:58:21,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [341166882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:21,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:58:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 4] total 18 [2023-12-02 12:58:21,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042132402] [2023-12-02 12:58:21,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:21,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 12:58:21,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:21,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 12:58:21,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-12-02 12:58:21,666 INFO L87 Difference]: Start difference. First operand 207 states and 258 transitions. Second operand has 13 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:58:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:23,204 INFO L93 Difference]: Finished difference Result 282 states and 338 transitions. [2023-12-02 12:58:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 12:58:23,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 28 [2023-12-02 12:58:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:23,207 INFO L225 Difference]: With dead ends: 282 [2023-12-02 12:58:23,207 INFO L226 Difference]: Without dead ends: 227 [2023-12-02 12:58:23,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-12-02 12:58:23,209 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 158 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:23,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 163 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 12:58:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-02 12:58:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2023-12-02 12:58:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 150 states have (on average 1.6) internal successors, (240), 203 states have internal predecessors, (240), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 12:58:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 280 transitions. [2023-12-02 12:58:23,237 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 280 transitions. Word has length 28 [2023-12-02 12:58:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:23,237 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 280 transitions. [2023-12-02 12:58:23,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:58:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 280 transitions. [2023-12-02 12:58:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 12:58:23,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:23,238 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:23,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 12:58:23,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:23,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:23,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash -280292058, now seen corresponding path program 1 times [2023-12-02 12:58:23,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:23,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809378193] [2023-12-02 12:58:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:23,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:23,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:23,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020017658] [2023-12-02 12:58:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:23,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:23,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:23,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:23,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 12:58:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:23,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:58:23,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:58:23,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:23,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:23,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809378193] [2023-12-02 12:58:23,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:23,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020017658] [2023-12-02 12:58:23,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020017658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:23,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:23,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424352551] [2023-12-02 12:58:23,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:23,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:58:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:58:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:23,612 INFO L87 Difference]: Start difference. First operand 227 states and 280 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:58:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:24,102 INFO L93 Difference]: Finished difference Result 265 states and 291 transitions. [2023-12-02 12:58:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:24,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-12-02 12:58:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:24,105 INFO L225 Difference]: With dead ends: 265 [2023-12-02 12:58:24,105 INFO L226 Difference]: Without dead ends: 263 [2023-12-02 12:58:24,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:24,106 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 63 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:24,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 157 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:58:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-02 12:58:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 227. [2023-12-02 12:58:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 150 states have (on average 1.5866666666666667) internal successors, (238), 203 states have internal predecessors, (238), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 12:58:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 278 transitions. [2023-12-02 12:58:24,132 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 278 transitions. Word has length 48 [2023-12-02 12:58:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:24,133 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 278 transitions. [2023-12-02 12:58:24,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:58:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 278 transitions. [2023-12-02 12:58:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 12:58:24,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:24,134 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:24,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 12:58:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 12:58:24,335 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:24,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 808107240, now seen corresponding path program 1 times [2023-12-02 12:58:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:24,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531799909] [2023-12-02 12:58:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:24,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:24,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347601142] [2023-12-02 12:58:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:24,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:24,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:24,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:24,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 12:58:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:24,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:58:24,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:58:24,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:24,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:24,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531799909] [2023-12-02 12:58:24,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:24,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347601142] [2023-12-02 12:58:24,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347601142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:24,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:24,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:24,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669557726] [2023-12-02 12:58:24,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:24,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:58:24,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:58:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:24,510 INFO L87 Difference]: Start difference. First operand 227 states and 278 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:58:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:24,764 INFO L93 Difference]: Finished difference Result 350 states and 410 transitions. [2023-12-02 12:58:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:24,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2023-12-02 12:58:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:24,767 INFO L225 Difference]: With dead ends: 350 [2023-12-02 12:58:24,768 INFO L226 Difference]: Without dead ends: 348 [2023-12-02 12:58:24,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:24,769 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 83 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:24,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 148 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:58:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-02 12:58:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 267. [2023-12-02 12:58:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 187 states have (on average 1.6149732620320856) internal successors, (302), 240 states have internal predecessors, (302), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 12:58:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 348 transitions. [2023-12-02 12:58:24,791 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 348 transitions. Word has length 50 [2023-12-02 12:58:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:24,792 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 348 transitions. [2023-12-02 12:58:24,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:58:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 348 transitions. [2023-12-02 12:58:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 12:58:24,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:24,793 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:24,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 12:58:24,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 12:58:24,996 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:24,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1222275624, now seen corresponding path program 1 times [2023-12-02 12:58:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:24,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380150524] [2023-12-02 12:58:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:24,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:25,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696851311] [2023-12-02 12:58:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:25,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:25,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:25,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:25,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 12:58:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:25,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:58:25,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:58:25,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:25,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380150524] [2023-12-02 12:58:25,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696851311] [2023-12-02 12:58:25,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696851311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:25,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:25,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:58:25,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053766505] [2023-12-02 12:58:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:58:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:58:25,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:25,151 INFO L87 Difference]: Start difference. First operand 267 states and 348 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:58:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:25,493 INFO L93 Difference]: Finished difference Result 267 states and 348 transitions. [2023-12-02 12:58:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:58:25,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2023-12-02 12:58:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:25,495 INFO L225 Difference]: With dead ends: 267 [2023-12-02 12:58:25,495 INFO L226 Difference]: Without dead ends: 265 [2023-12-02 12:58:25,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:58:25,496 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 85 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:25,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 78 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:58:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-02 12:58:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-02 12:58:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 187 states have (on average 1.5935828877005347) internal successors, (298), 238 states have internal predecessors, (298), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 12:58:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 344 transitions. [2023-12-02 12:58:25,529 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 344 transitions. Word has length 50 [2023-12-02 12:58:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:25,529 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 344 transitions. [2023-12-02 12:58:25,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:58:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 344 transitions. [2023-12-02 12:58:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 12:58:25,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:25,530 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:25,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 12:58:25,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 12:58:25,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:25,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash 80495922, now seen corresponding path program 1 times [2023-12-02 12:58:25,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:25,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819198033] [2023-12-02 12:58:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:25,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209472552] [2023-12-02 12:58:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:25,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:25,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:25,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 12:58:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:25,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:58:25,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:58:25,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:26,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819198033] [2023-12-02 12:58:26,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209472552] [2023-12-02 12:58:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209472552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:58:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1392619075] [2023-12-02 12:58:26,062 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 12:58:26,062 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:58:26,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:58:26,063 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:58:26,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:58:29,655 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 12:58:29,656 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:58:29,657 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:58:31,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1392619075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:31,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:58:31,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [3] total 22 [2023-12-02 12:58:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529520032] [2023-12-02 12:58:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:31,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 12:58:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 12:58:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2023-12-02 12:58:31,529 INFO L87 Difference]: Start difference. First operand 265 states and 344 transitions. Second operand has 21 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 12:58:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:34,915 INFO L93 Difference]: Finished difference Result 340 states and 399 transitions. [2023-12-02 12:58:34,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 12:58:34,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 53 [2023-12-02 12:58:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:34,917 INFO L225 Difference]: With dead ends: 340 [2023-12-02 12:58:34,917 INFO L226 Difference]: Without dead ends: 265 [2023-12-02 12:58:34,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=304, Invalid=752, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:58:34,918 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 749 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:34,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 162 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 12:58:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-02 12:58:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2023-12-02 12:58:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 183 states have (on average 1.4808743169398908) internal successors, (271), 234 states have internal predecessors, (271), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 12:58:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 317 transitions. [2023-12-02 12:58:34,949 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 317 transitions. Word has length 53 [2023-12-02 12:58:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:34,949 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 317 transitions. [2023-12-02 12:58:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 12:58:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 317 transitions. [2023-12-02 12:58:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 12:58:34,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:34,951 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:34,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 12:58:35,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 12:58:35,152 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:35,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1243105616, now seen corresponding path program 1 times [2023-12-02 12:58:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:35,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664507521] [2023-12-02 12:58:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:35,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:35,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442274881] [2023-12-02 12:58:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:35,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:35,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:35,163 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:35,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 12:58:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:35,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:58:35,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 12:58:35,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:35,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:35,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664507521] [2023-12-02 12:58:35,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442274881] [2023-12-02 12:58:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442274881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:58:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1921206129] [2023-12-02 12:58:35,688 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 12:58:35,688 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:58:35,689 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:58:35,689 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:58:35,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:58:39,076 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 12:58:39,077 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:58:39,078 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:58:42,164 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8765#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 (+ 95 |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= |ULTIMATE.start_main_~y~0#1| 50) (= |ULTIMATE.start_main_~s~0#1| 1))' at error location [2023-12-02 12:58:42,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:58:42,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:58:42,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 12:58:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019804032] [2023-12-02 12:58:42,164 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:58:42,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:58:42,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:42,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:58:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2023-12-02 12:58:42,166 INFO L87 Difference]: Start difference. First operand 261 states and 317 transitions. Second operand has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 12:58:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:43,393 INFO L93 Difference]: Finished difference Result 438 states and 530 transitions. [2023-12-02 12:58:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:58:43,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2023-12-02 12:58:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:43,396 INFO L225 Difference]: With dead ends: 438 [2023-12-02 12:58:43,396 INFO L226 Difference]: Without dead ends: 437 [2023-12-02 12:58:43,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2023-12-02 12:58:43,397 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 556 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:43,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 236 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 12:58:43,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-02 12:58:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 271. [2023-12-02 12:58:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 192 states have (on average 1.4583333333333333) internal successors, (280), 243 states have internal predecessors, (280), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 12:58:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 328 transitions. [2023-12-02 12:58:43,427 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 328 transitions. Word has length 62 [2023-12-02 12:58:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:43,427 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 328 transitions. [2023-12-02 12:58:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 12:58:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 328 transitions. [2023-12-02 12:58:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 12:58:43,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:43,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:43,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 12:58:43,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 12:58:43,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:43,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash 118431632, now seen corresponding path program 1 times [2023-12-02 12:58:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:43,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076086963] [2023-12-02 12:58:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:43,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443609914] [2023-12-02 12:58:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:43,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:43,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:43,638 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:43,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 12:58:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:43,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 12:58:43,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 12:58:44,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:44,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076086963] [2023-12-02 12:58:44,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443609914] [2023-12-02 12:58:44,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443609914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:58:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [582351622] [2023-12-02 12:58:44,359 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 12:58:44,359 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:58:44,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:58:44,360 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:58:44,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:58:47,220 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 12:58:47,221 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:58:47,222 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:58:49,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [582351622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:49,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:58:49,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 24 [2023-12-02 12:58:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39596180] [2023-12-02 12:58:49,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:49,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 12:58:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 12:58:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2023-12-02 12:58:49,174 INFO L87 Difference]: Start difference. First operand 271 states and 328 transitions. Second operand has 19 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 12:58:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:52,431 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2023-12-02 12:58:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 12:58:52,431 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 63 [2023-12-02 12:58:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:52,433 INFO L225 Difference]: With dead ends: 308 [2023-12-02 12:58:52,433 INFO L226 Difference]: Without dead ends: 262 [2023-12-02 12:58:52,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 102 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:58:52,434 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 429 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:52,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 124 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 12:58:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-02 12:58:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2023-12-02 12:58:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 181 states have (on average 1.3646408839779005) internal successors, (247), 232 states have internal predecessors, (247), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 12:58:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 291 transitions. [2023-12-02 12:58:52,456 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 291 transitions. Word has length 63 [2023-12-02 12:58:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:52,457 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 291 transitions. [2023-12-02 12:58:52,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 12:58:52,457 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 291 transitions. [2023-12-02 12:58:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:58:52,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:52,458 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:52,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 12:58:52,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:52,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:52,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1616325439, now seen corresponding path program 1 times [2023-12-02 12:58:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:52,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045812297] [2023-12-02 12:58:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:52,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:52,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934046812] [2023-12-02 12:58:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:52,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:52,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:52,669 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:52,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 12:58:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:52,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:58:52,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 12:58:52,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:58:52,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045812297] [2023-12-02 12:58:52,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934046812] [2023-12-02 12:58:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934046812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:52,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:52,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:58:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866348783] [2023-12-02 12:58:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:52,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:58:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:58:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:58:52,859 INFO L87 Difference]: Start difference. First operand 258 states and 291 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 12:58:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:53,965 INFO L93 Difference]: Finished difference Result 359 states and 394 transitions. [2023-12-02 12:58:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:58:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 84 [2023-12-02 12:58:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:53,968 INFO L225 Difference]: With dead ends: 359 [2023-12-02 12:58:53,968 INFO L226 Difference]: Without dead ends: 357 [2023-12-02 12:58:53,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:58:53,968 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 180 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:53,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 151 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 12:58:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-02 12:58:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 255. [2023-12-02 12:58:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 180 states have (on average 1.35) internal successors, (243), 229 states have internal predecessors, (243), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 12:58:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 287 transitions. [2023-12-02 12:58:53,992 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 287 transitions. Word has length 84 [2023-12-02 12:58:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:53,993 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 287 transitions. [2023-12-02 12:58:53,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 12:58:53,993 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 287 transitions. [2023-12-02 12:58:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 12:58:53,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:53,994 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:53,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-02 12:58:54,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:54,194 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:58:54,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:54,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1433518841, now seen corresponding path program 1 times [2023-12-02 12:58:54,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:54,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531496891] [2023-12-02 12:58:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:54,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:54,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:58:54,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43459980] [2023-12-02 12:58:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:54,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:54,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:54,205 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:54,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 12:58:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:54,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:58:54,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 12:58:54,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 12:58:54,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:54,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531496891] [2023-12-02 12:58:54,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:58:54,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43459980] [2023-12-02 12:58:54,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43459980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:58:54,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2141649432] [2023-12-02 12:58:54,490 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 12:58:54,490 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:58:54,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:58:54,490 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:58:54,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:58:56,823 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 12:58:56,824 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:58:56,825 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:59:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2141649432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:59:00,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [3, 3] total 26 [2023-12-02 12:59:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873500317] [2023-12-02 12:59:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:00,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 12:59:00,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:59:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 12:59:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:59:00,332 INFO L87 Difference]: Start difference. First operand 255 states and 287 transitions. Second operand has 23 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 12:59:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:04,258 INFO L93 Difference]: Finished difference Result 258 states and 289 transitions. [2023-12-02 12:59:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 12:59:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 85 [2023-12-02 12:59:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:04,260 INFO L225 Difference]: With dead ends: 258 [2023-12-02 12:59:04,260 INFO L226 Difference]: Without dead ends: 257 [2023-12-02 12:59:04,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 206 SyntacticMatches, 22 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:59:04,261 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 515 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:04,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 152 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 12:59:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-02 12:59:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-02 12:59:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 180 states have (on average 1.3444444444444446) internal successors, (242), 229 states have internal predecessors, (242), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 12:59:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 286 transitions. [2023-12-02 12:59:04,282 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 286 transitions. Word has length 85 [2023-12-02 12:59:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:04,282 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 286 transitions. [2023-12-02 12:59:04,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 12:59:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 286 transitions. [2023-12-02 12:59:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 12:59:04,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:04,283 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:59:04,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 12:59:04,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 12:59:04,483 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:59:04,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1945629513, now seen corresponding path program 1 times [2023-12-02 12:59:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:59:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484865599] [2023-12-02 12:59:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:59:04,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:59:04,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620265497] [2023-12-02 12:59:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:04,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:59:04,492 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:59:04,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 12:59:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:04,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:59:04,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 12:59:04,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 12:59:04,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:59:04,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484865599] [2023-12-02 12:59:04,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:59:04,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620265497] [2023-12-02 12:59:04,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620265497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:04,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2025105890] [2023-12-02 12:59:04,762 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 12:59:04,763 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:59:04,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:59:04,763 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:59:04,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:59:07,255 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 12:59:07,257 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:59:07,257 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:59:09,925 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13089#(and (<= 0 |ULTIMATE.start_main_~b~0#1|) (not (= |ULTIMATE.start_main_~b~0#1| 0)) (<= 1 |#StackHeapBarrier|) (<= (+ 9223372036854775807 |ULTIMATE.start_main_~r~0#1|) 0) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 93)) (<= |ULTIMATE.start_main_~x~0#1| 50) (= (+ |ULTIMATE.start_main_~q~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 50) (= |ULTIMATE.start_main_~s~0#1| 1))' at error location [2023-12-02 12:59:09,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:59:09,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:59:09,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-02 12:59:09,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439131541] [2023-12-02 12:59:09,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 12:59:09,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:59:09,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:59:09,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:59:09,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2023-12-02 12:59:09,927 INFO L87 Difference]: Start difference. First operand 255 states and 286 transitions. Second operand has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 12:59:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:11,187 INFO L93 Difference]: Finished difference Result 733 states and 815 transitions. [2023-12-02 12:59:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:59:11,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 87 [2023-12-02 12:59:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:11,191 INFO L225 Difference]: With dead ends: 733 [2023-12-02 12:59:11,191 INFO L226 Difference]: Without dead ends: 731 [2023-12-02 12:59:11,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 206 SyntacticMatches, 28 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2023-12-02 12:59:11,192 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 337 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:11,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 334 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 12:59:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-02 12:59:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 448. [2023-12-02 12:59:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 355 states have (on average 1.4253521126760564) internal successors, (506), 404 states have internal predecessors, (506), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-02 12:59:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2023-12-02 12:59:11,235 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 87 [2023-12-02 12:59:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:11,235 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2023-12-02 12:59:11,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 12:59:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2023-12-02 12:59:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 12:59:11,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:11,237 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:59:11,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 12:59:11,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 12:59:11,438 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 12:59:11,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1439189739, now seen corresponding path program 1 times [2023-12-02 12:59:11,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:59:11,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86916242] [2023-12-02 12:59:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:11,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:59:11,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:59:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164491495] [2023-12-02 12:59:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:11,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:59:11,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:59:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 12:59:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:11,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 12:59:11,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 12:59:11,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:11,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:59:11,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86916242] [2023-12-02 12:59:11,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:59:11,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164491495] [2023-12-02 12:59:11,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164491495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:59:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1449125654] [2023-12-02 12:59:11,831 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 12:59:11,831 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:59:11,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:59:11,831 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:59:11,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:59:25,601 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 12:59:25,602 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:59:25,603 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:59:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1449125654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:41,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:59:41,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [5] total 38 [2023-12-02 12:59:41,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478590783] [2023-12-02 12:59:41,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:41,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 12:59:41,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:59:41,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 12:59:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 12:59:41,980 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 35 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 13:00:46,256 WARN L293 SmtUtils]: Spent 9.31s on a formula simplification. DAG size of input: 117 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:01:05,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:01:25,677 WARN L293 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 118 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:01:45,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:01:47,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:01:49,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:01:51,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:01:53,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:01:55,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:02:12,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:02:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:21,009 INFO L93 Difference]: Finished difference Result 603 states and 841 transitions. [2023-12-02 13:02:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-02 13:02:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 89 [2023-12-02 13:02:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:21,013 INFO L225 Difference]: With dead ends: 603 [2023-12-02 13:02:21,013 INFO L226 Difference]: Without dead ends: 492 [2023-12-02 13:02:21,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 132 SyntacticMatches, 17 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 124.9s TimeCoverageRelationStatistics Valid=2127, Invalid=6063, Unknown=0, NotChecked=0, Total=8190 [2023-12-02 13:02:21,016 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2211 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 462 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:21,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 58 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1361 Invalid, 6 Unknown, 0 Unchecked, 50.3s Time] [2023-12-02 13:02:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-02 13:02:21,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 430. [2023-12-02 13:02:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 375 states have (on average 1.1573333333333333) internal successors, (434), 382 states have internal predecessors, (434), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 13:02:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 522 transitions. [2023-12-02 13:02:21,074 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 522 transitions. Word has length 89 [2023-12-02 13:02:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:21,075 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 522 transitions. [2023-12-02 13:02:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 13:02:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 522 transitions. [2023-12-02 13:02:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 13:02:21,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:21,076 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:21,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 13:02:21,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:21,280 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:02:21,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1665209000, now seen corresponding path program 1 times [2023-12-02 13:02:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:21,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394061898] [2023-12-02 13:02:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:21,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:21,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129722347] [2023-12-02 13:02:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:21,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:21,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:21,293 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:21,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 13:02:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:21,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:02:21,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 13:02:21,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:02:21,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:21,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394061898] [2023-12-02 13:02:21,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:02:21,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129722347] [2023-12-02 13:02:21,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129722347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:02:21,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1316824831] [2023-12-02 13:02:21,763 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:02:21,763 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:02:21,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:02:21,764 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:02:21,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:02:34,419 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:02:34,420 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:02:34,421 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:02:49,538 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16332#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:02:49,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:02:49,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:02:49,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:02:49,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36189545] [2023-12-02 13:02:49,539 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:02:49,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:02:49,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:02:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1417, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 13:02:49,540 INFO L87 Difference]: Start difference. First operand 430 states and 522 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:02:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:49,746 INFO L93 Difference]: Finished difference Result 481 states and 577 transitions. [2023-12-02 13:02:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:02:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2023-12-02 13:02:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:49,749 INFO L225 Difference]: With dead ends: 481 [2023-12-02 13:02:49,749 INFO L226 Difference]: Without dead ends: 480 [2023-12-02 13:02:49,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 135 SyntacticMatches, 17 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=239, Invalid=1567, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 13:02:49,750 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 110 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:49,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 100 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:02:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-12-02 13:02:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 439. [2023-12-02 13:02:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 384 states have (on average 1.1536458333333333) internal successors, (443), 391 states have internal predecessors, (443), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 13:02:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 531 transitions. [2023-12-02 13:02:49,838 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 531 transitions. Word has length 90 [2023-12-02 13:02:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:49,839 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 531 transitions. [2023-12-02 13:02:49,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:02:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 531 transitions. [2023-12-02 13:02:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 13:02:49,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:49,840 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:49,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 13:02:50,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:50,041 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:02:50,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash -408141400, now seen corresponding path program 2 times [2023-12-02 13:02:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:50,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683188322] [2023-12-02 13:02:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:50,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264814567] [2023-12-02 13:02:50,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:02:50,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:50,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:50,052 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:50,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 13:02:50,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:02:50,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:02:50,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:02:50,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 13:02:50,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:02:50,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:50,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683188322] [2023-12-02 13:02:50,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:02:50,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264814567] [2023-12-02 13:02:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264814567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:02:50,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646343343] [2023-12-02 13:02:50,626 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:02:50,626 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:02:50,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:02:50,627 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:02:50,627 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:03:02,411 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:03:02,412 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:03:02,413 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:03:17,213 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17726#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= 0 (+ 49 |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:03:17,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:03:17,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:03:17,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-12-02 13:03:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667365856] [2023-12-02 13:03:17,214 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:03:17,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:03:17,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:17,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:03:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1361, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 13:03:17,215 INFO L87 Difference]: Start difference. First operand 439 states and 531 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:03:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:17,377 INFO L93 Difference]: Finished difference Result 502 states and 600 transitions. [2023-12-02 13:03:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:03:17,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2023-12-02 13:03:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:17,380 INFO L225 Difference]: With dead ends: 502 [2023-12-02 13:03:17,380 INFO L226 Difference]: Without dead ends: 501 [2023-12-02 13:03:17,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 136 SyntacticMatches, 17 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 13:03:17,381 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 82 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:17,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 100 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:03:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-02 13:03:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 482. [2023-12-02 13:03:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 423 states have (on average 1.1513002364066194) internal successors, (487), 430 states have internal predecessors, (487), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 13:03:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 583 transitions. [2023-12-02 13:03:17,442 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 583 transitions. Word has length 90 [2023-12-02 13:03:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:17,443 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 583 transitions. [2023-12-02 13:03:17,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:03:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 583 transitions. [2023-12-02 13:03:17,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 13:03:17,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:17,444 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:03:17,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 13:03:17,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 13:03:17,644 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:03:17,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1756950710, now seen corresponding path program 1 times [2023-12-02 13:03:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:17,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232118079] [2023-12-02 13:03:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:17,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:17,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:03:17,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644791721] [2023-12-02 13:03:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:17,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:03:17,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:03:17,653 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:03:17,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 13:03:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:17,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:03:17,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:03:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 13:03:17,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:03:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 13:03:18,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:18,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232118079] [2023-12-02 13:03:18,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:03:18,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644791721] [2023-12-02 13:03:18,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644791721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:03:18,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178745942] [2023-12-02 13:03:18,526 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:03:18,526 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:03:18,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:03:18,526 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:03:18,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:03:30,856 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:03:30,857 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:03:30,858 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:03:45,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19434#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 50))' at error location [2023-12-02 13:03:45,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:03:45,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:03:45,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-02 13:03:45,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53317780] [2023-12-02 13:03:45,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:03:45,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:03:45,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:45,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:03:45,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1501, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 13:03:45,377 INFO L87 Difference]: Start difference. First operand 482 states and 583 transitions. Second operand has 9 states, 8 states have (on average 15.5) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 13:03:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:47,677 INFO L93 Difference]: Finished difference Result 575 states and 684 transitions. [2023-12-02 13:03:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:03:47,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.5) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 92 [2023-12-02 13:03:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:47,680 INFO L225 Difference]: With dead ends: 575 [2023-12-02 13:03:47,680 INFO L226 Difference]: Without dead ends: 573 [2023-12-02 13:03:47,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 216 SyntacticMatches, 18 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=250, Invalid=1820, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 13:03:47,682 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 144 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:47,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 266 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 13:03:47,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-02 13:03:47,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 518. [2023-12-02 13:03:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 456 states have (on average 1.1491228070175439) internal successors, (524), 463 states have internal predecessors, (524), 51 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-02 13:03:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 626 transitions. [2023-12-02 13:03:47,749 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 626 transitions. Word has length 92 [2023-12-02 13:03:47,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:47,749 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 626 transitions. [2023-12-02 13:03:47,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.5) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 13:03:47,749 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 626 transitions. [2023-12-02 13:03:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 13:03:47,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:47,750 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:03:47,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 13:03:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 13:03:47,950 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:03:47,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1381859766, now seen corresponding path program 2 times [2023-12-02 13:03:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:47,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125223770] [2023-12-02 13:03:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:47,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:47,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:03:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130219145] [2023-12-02 13:03:47,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:03:47,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:03:47,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:03:47,959 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:03:47,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 13:03:48,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:03:48,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:03:48,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:03:48,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:03:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 13:03:48,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:03:48,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125223770] [2023-12-02 13:03:48,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:03:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130219145] [2023-12-02 13:03:48,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130219145] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:03:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941966939] [2023-12-02 13:03:48,980 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:03:48,980 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:03:48,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:03:48,980 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:03:48,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:04:02,248 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:04:02,249 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:04:02,249 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:16,960 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21041#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= 0 (+ 49 |ULTIMATE.start_main_~b~0#1|)))' at error location [2023-12-02 13:04:16,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:04:16,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:04:16,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 13:04:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059457097] [2023-12-02 13:04:16,960 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:04:16,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:04:16,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:04:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1665, Unknown=1, NotChecked=0, Total=1892 [2023-12-02 13:04:16,962 INFO L87 Difference]: Start difference. First operand 518 states and 626 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:04:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:17,421 INFO L93 Difference]: Finished difference Result 597 states and 713 transitions. [2023-12-02 13:04:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:04:17,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2023-12-02 13:04:17,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:17,424 INFO L225 Difference]: With dead ends: 597 [2023-12-02 13:04:17,424 INFO L226 Difference]: Without dead ends: 595 [2023-12-02 13:04:17,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 137 SyntacticMatches, 18 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=234, Invalid=1745, Unknown=1, NotChecked=0, Total=1980 [2023-12-02 13:04:17,425 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 71 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:17,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 196 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:04:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-02 13:04:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 582. [2023-12-02 13:04:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 514 states have (on average 1.1420233463035019) internal successors, (587), 521 states have internal predecessors, (587), 57 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 13:04:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 701 transitions. [2023-12-02 13:04:17,503 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 701 transitions. Word has length 92 [2023-12-02 13:04:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:17,503 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 701 transitions. [2023-12-02 13:04:17,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:04:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 701 transitions. [2023-12-02 13:04:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 13:04:17,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:17,504 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:04:17,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 13:04:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:17,704 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:04:17,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1196158697, now seen corresponding path program 2 times [2023-12-02 13:04:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:17,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831152141] [2023-12-02 13:04:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:17,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:17,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:04:17,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685643068] [2023-12-02 13:04:17,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:04:17,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:17,715 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:17,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 13:04:17,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:04:17,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:04:17,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 13:04:17,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 13:04:18,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:18,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831152141] [2023-12-02 13:04:18,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:04:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685643068] [2023-12-02 13:04:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685643068] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:04:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682855583] [2023-12-02 13:04:18,482 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 13:04:18,482 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:18,483 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:18,483 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:18,483 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:04:21,222 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:04:21,223 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:04:21,224 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:25,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22777#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 93)) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= |ULTIMATE.start_main_~y~0#1| 50) (= |ULTIMATE.start_main_~s~0#1| 1))' at error location [2023-12-02 13:04:25,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:04:25,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:04:25,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 13:04:25,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631279796] [2023-12-02 13:04:25,736 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:04:25,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:04:25,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:25,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:04:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2023-12-02 13:04:25,737 INFO L87 Difference]: Start difference. First operand 582 states and 701 transitions. Second operand has 10 states, 8 states have (on average 8.5) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:04:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:26,387 INFO L93 Difference]: Finished difference Result 637 states and 760 transitions. [2023-12-02 13:04:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:04:26,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.5) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 98 [2023-12-02 13:04:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:26,392 INFO L225 Difference]: With dead ends: 637 [2023-12-02 13:04:26,392 INFO L226 Difference]: Without dead ends: 636 [2023-12-02 13:04:26,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 155 SyntacticMatches, 31 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 13:04:26,393 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 232 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:26,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 233 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:04:26,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-02 13:04:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 582. [2023-12-02 13:04:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 514 states have (on average 1.140077821011673) internal successors, (586), 521 states have internal predecessors, (586), 57 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 13:04:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 700 transitions. [2023-12-02 13:04:26,492 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 700 transitions. Word has length 98 [2023-12-02 13:04:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:26,492 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 700 transitions. [2023-12-02 13:04:26,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.5) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:04:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 700 transitions. [2023-12-02 13:04:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 13:04:26,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:26,494 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:04:26,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 13:04:26,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:26,694 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:04:26,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1824596105, now seen corresponding path program 1 times [2023-12-02 13:04:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:26,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510840557] [2023-12-02 13:04:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:26,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:04:26,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335698803] [2023-12-02 13:04:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:26,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:26,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:26,705 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:26,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 13:04:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:26,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:04:26,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 13:04:27,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:27,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510840557] [2023-12-02 13:04:27,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:04:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335698803] [2023-12-02 13:04:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335698803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:04:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [595541188] [2023-12-02 13:04:27,443 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:04:27,443 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:27,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:27,444 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:27,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:04:39,903 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:04:39,904 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:04:39,905 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:59,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24551#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ 9223372036854775806 |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:04:59,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:04:59,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:04:59,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 13:04:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504710558] [2023-12-02 13:04:59,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:04:59,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:04:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:04:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1786, Unknown=3, NotChecked=0, Total=2070 [2023-12-02 13:04:59,924 INFO L87 Difference]: Start difference. First operand 582 states and 700 transitions. Second operand has 10 states, 8 states have (on average 8.5) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:05:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:00,385 INFO L93 Difference]: Finished difference Result 672 states and 802 transitions. [2023-12-02 13:05:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:05:00,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.5) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 98 [2023-12-02 13:05:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:00,388 INFO L225 Difference]: With dead ends: 672 [2023-12-02 13:05:00,388 INFO L226 Difference]: Without dead ends: 671 [2023-12-02 13:05:00,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 153 SyntacticMatches, 18 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=292, Invalid=1867, Unknown=3, NotChecked=0, Total=2162 [2023-12-02 13:05:00,390 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 97 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:00,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 271 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:05:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2023-12-02 13:05:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 582. [2023-12-02 13:05:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 514 states have (on average 1.1381322957198443) internal successors, (585), 521 states have internal predecessors, (585), 57 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 13:05:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 699 transitions. [2023-12-02 13:05:00,467 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 699 transitions. Word has length 98 [2023-12-02 13:05:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:00,467 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 699 transitions. [2023-12-02 13:05:00,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.5) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:05:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 699 transitions. [2023-12-02 13:05:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 13:05:00,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:00,469 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:00,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 13:05:00,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:00,674 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:05:00,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash 643346009, now seen corresponding path program 1 times [2023-12-02 13:05:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:00,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092487383] [2023-12-02 13:05:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:00,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:00,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:00,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670544111] [2023-12-02 13:05:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:00,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:00,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:00,685 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:00,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 13:05:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:00,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:05:00,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 13:05:00,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:00,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092487383] [2023-12-02 13:05:00,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670544111] [2023-12-02 13:05:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670544111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:00,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:05:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5780214] [2023-12-02 13:05:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:00,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:05:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:05:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:05:00,792 INFO L87 Difference]: Start difference. First operand 582 states and 699 transitions. Second operand has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:05:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:00,903 INFO L93 Difference]: Finished difference Result 585 states and 699 transitions. [2023-12-02 13:05:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:00,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2023-12-02 13:05:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:00,906 INFO L225 Difference]: With dead ends: 585 [2023-12-02 13:05:00,906 INFO L226 Difference]: Without dead ends: 584 [2023-12-02 13:05:00,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:05:00,906 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:00,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 77 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:05:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-02 13:05:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2023-12-02 13:05:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 514 states have (on average 1.132295719844358) internal successors, (582), 521 states have internal predecessors, (582), 57 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 13:05:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 696 transitions. [2023-12-02 13:05:01,005 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 696 transitions. Word has length 101 [2023-12-02 13:05:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:01,006 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 696 transitions. [2023-12-02 13:05:01,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:05:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 696 transitions. [2023-12-02 13:05:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 13:05:01,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:01,007 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:01,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 13:05:01,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 13:05:01,207 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:05:01,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash -563470503, now seen corresponding path program 2 times [2023-12-02 13:05:01,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:01,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506863220] [2023-12-02 13:05:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:01,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:01,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558472324] [2023-12-02 13:05:01,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:05:01,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:01,219 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:01,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 13:05:01,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:05:01,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:05:01,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:05:01,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 13:05:01,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:01,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506863220] [2023-12-02 13:05:01,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558472324] [2023-12-02 13:05:01,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558472324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:05:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879310244] [2023-12-02 13:05:01,990 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:05:01,990 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:01,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:01,991 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:01,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:14,692 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:05:14,693 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:05:14,694 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:37,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28017#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:05:37,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:05:37,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:05:37,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 13:05:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656168468] [2023-12-02 13:05:37,076 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:05:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:05:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1876, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 13:05:37,077 INFO L87 Difference]: Start difference. First operand 582 states and 696 transitions. Second operand has 11 states, 9 states have (on average 7.888888888888889) internal successors, (71), 11 states have internal predecessors, (71), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:05:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:37,586 INFO L93 Difference]: Finished difference Result 664 states and 789 transitions. [2023-12-02 13:05:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:05:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.888888888888889) internal successors, (71), 11 states have internal predecessors, (71), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 101 [2023-12-02 13:05:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:37,590 INFO L225 Difference]: With dead ends: 664 [2023-12-02 13:05:37,590 INFO L226 Difference]: Without dead ends: 663 [2023-12-02 13:05:37,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 159 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=295, Invalid=1961, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 13:05:37,591 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 81 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:37,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 289 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:05:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-12-02 13:05:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 582. [2023-12-02 13:05:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 514 states have (on average 1.1303501945525292) internal successors, (581), 521 states have internal predecessors, (581), 57 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 13:05:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 695 transitions. [2023-12-02 13:05:37,672 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 695 transitions. Word has length 101 [2023-12-02 13:05:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:37,673 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 695 transitions. [2023-12-02 13:05:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.888888888888889) internal successors, (71), 11 states have internal predecessors, (71), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:05:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 695 transitions. [2023-12-02 13:05:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 13:05:37,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:37,674 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:37,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 13:05:37,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 13:05:37,874 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:05:37,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1618469889, now seen corresponding path program 1 times [2023-12-02 13:05:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:37,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180322909] [2023-12-02 13:05:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:37,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:37,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356770171] [2023-12-02 13:05:37,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:37,884 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:37,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 13:05:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:37,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:05:37,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-02 13:05:38,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:42,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180322909] [2023-12-02 13:05:42,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356770171] [2023-12-02 13:05:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356770171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:05:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [743115254] [2023-12-02 13:05:42,686 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:05:42,686 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:42,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:42,686 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:42,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:55,018 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:05:55,022 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:05:55,023 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:11,457 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29882#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) 0) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:06:11,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:06:11,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:06:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 13:06:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264891552] [2023-12-02 13:06:11,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:06:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:06:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:06:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1795, Unknown=2, NotChecked=0, Total=2070 [2023-12-02 13:06:11,459 INFO L87 Difference]: Start difference. First operand 582 states and 695 transitions. Second operand has 10 states, 8 states have (on average 9.25) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 13:06:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:11,876 INFO L93 Difference]: Finished difference Result 662 states and 788 transitions. [2023-12-02 13:06:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:06:11,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.25) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 107 [2023-12-02 13:06:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:11,880 INFO L225 Difference]: With dead ends: 662 [2023-12-02 13:06:11,880 INFO L226 Difference]: Without dead ends: 661 [2023-12-02 13:06:11,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 178 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=284, Invalid=1876, Unknown=2, NotChecked=0, Total=2162 [2023-12-02 13:06:11,882 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 82 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:11,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 291 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:06:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-02 13:06:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 600. [2023-12-02 13:06:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 530 states have (on average 1.1320754716981132) internal successors, (600), 537 states have internal predecessors, (600), 59 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 13:06:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 718 transitions. [2023-12-02 13:06:11,981 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 718 transitions. Word has length 107 [2023-12-02 13:06:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:11,981 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 718 transitions. [2023-12-02 13:06:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.25) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 13:06:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 718 transitions. [2023-12-02 13:06:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 13:06:11,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:11,983 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:11,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 13:06:12,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 13:06:12,183 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:06:12,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1477405439, now seen corresponding path program 2 times [2023-12-02 13:06:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464650695] [2023-12-02 13:06:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:12,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:12,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388430674] [2023-12-02 13:06:12,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:06:12,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:12,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:12,192 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:12,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 13:06:12,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 13:06:12,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:06:12,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:06:12,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-12-02 13:06:12,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:13,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464650695] [2023-12-02 13:06:13,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388430674] [2023-12-02 13:06:13,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388430674] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:06:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1622728881] [2023-12-02 13:06:13,148 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:06:13,148 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:13,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:13,148 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:13,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:06:26,629 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:06:26,630 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:06:26,631 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:48,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31763#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) 0) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:06:48,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:06:48,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:06:48,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 13:06:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515743988] [2023-12-02 13:06:48,819 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:06:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:06:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:06:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1508, Unknown=1, NotChecked=0, Total=1806 [2023-12-02 13:06:48,821 INFO L87 Difference]: Start difference. First operand 600 states and 718 transitions. Second operand has 7 states, 5 states have (on average 10.8) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-02 13:06:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:49,702 INFO L93 Difference]: Finished difference Result 622 states and 730 transitions. [2023-12-02 13:06:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:06:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.8) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 107 [2023-12-02 13:06:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:49,706 INFO L225 Difference]: With dead ends: 622 [2023-12-02 13:06:49,706 INFO L226 Difference]: Without dead ends: 621 [2023-12-02 13:06:49,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 181 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=333, Invalid=1828, Unknown=1, NotChecked=0, Total=2162 [2023-12-02 13:06:49,708 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 172 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:49,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 165 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:06:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-02 13:06:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 600. [2023-12-02 13:06:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 530 states have (on average 1.1283018867924528) internal successors, (598), 537 states have internal predecessors, (598), 59 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 13:06:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 716 transitions. [2023-12-02 13:06:49,808 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 716 transitions. Word has length 107 [2023-12-02 13:06:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:49,808 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 716 transitions. [2023-12-02 13:06:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.8) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-02 13:06:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 716 transitions. [2023-12-02 13:06:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:06:49,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:49,809 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:49,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 13:06:50,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 13:06:50,010 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:06:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 830954639, now seen corresponding path program 3 times [2023-12-02 13:06:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861066506] [2023-12-02 13:06:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:50,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12187027] [2023-12-02 13:06:50,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:06:50,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:50,020 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:50,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 13:06:50,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:06:50,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:06:50,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:06:50,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 13:06:50,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:50,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861066506] [2023-12-02 13:06:50,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12187027] [2023-12-02 13:06:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12187027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:06:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [496389588] [2023-12-02 13:06:50,725 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:06:50,725 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:50,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:50,725 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:50,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:07:03,276 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:07:03,276 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:07:03,277 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:07:19,885 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33610#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= 0 (+ 49 |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:07:19,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:07:19,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:07:19,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 13:07:19,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236442274] [2023-12-02 13:07:19,886 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:07:19,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:07:19,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:19,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:07:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 13:07:19,888 INFO L87 Difference]: Start difference. First operand 600 states and 716 transitions. Second operand has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:07:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:20,213 INFO L93 Difference]: Finished difference Result 650 states and 770 transitions. [2023-12-02 13:07:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:07:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2023-12-02 13:07:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:20,217 INFO L225 Difference]: With dead ends: 650 [2023-12-02 13:07:20,217 INFO L226 Difference]: Without dead ends: 649 [2023-12-02 13:07:20,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 198 SyntacticMatches, 25 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=238, Invalid=1742, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 13:07:20,218 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 62 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:20,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 145 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:07:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-02 13:07:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 609. [2023-12-02 13:07:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 539 states have (on average 1.1261595547309833) internal successors, (607), 546 states have internal predecessors, (607), 59 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 13:07:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 725 transitions. [2023-12-02 13:07:20,303 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 725 transitions. Word has length 126 [2023-12-02 13:07:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:20,303 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 725 transitions. [2023-12-02 13:07:20,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:07:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 725 transitions. [2023-12-02 13:07:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:07:20,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:20,304 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:20,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 13:07:20,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:20,505 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:07:20,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1242395761, now seen corresponding path program 4 times [2023-12-02 13:07:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989701026] [2023-12-02 13:07:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:20,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:07:20,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74266801] [2023-12-02 13:07:20,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 13:07:20,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:20,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:20,515 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:20,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 13:07:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:20,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:07:20,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 13:07:21,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:07:21,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989701026] [2023-12-02 13:07:21,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:07:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74266801] [2023-12-02 13:07:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74266801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:07:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1887695483] [2023-12-02 13:07:21,165 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:07:21,165 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:07:21,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:07:21,166 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:07:21,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:07:33,409 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:07:33,410 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:07:33,411 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:07:50,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35498#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:07:50,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:07:50,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:07:50,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 13:07:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171007389] [2023-12-02 13:07:50,176 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:07:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:07:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:07:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1577, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 13:07:50,178 INFO L87 Difference]: Start difference. First operand 609 states and 725 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:07:50,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:50,595 INFO L93 Difference]: Finished difference Result 632 states and 746 transitions. [2023-12-02 13:07:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:07:50,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2023-12-02 13:07:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:50,598 INFO L225 Difference]: With dead ends: 632 [2023-12-02 13:07:50,598 INFO L226 Difference]: Without dead ends: 631 [2023-12-02 13:07:50,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 197 SyntacticMatches, 25 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=229, Invalid=1577, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 13:07:50,599 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 74 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:50,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 258 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:07:50,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-12-02 13:07:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 609. [2023-12-02 13:07:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 539 states have (on average 1.12430426716141) internal successors, (606), 546 states have internal predecessors, (606), 59 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 13:07:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 724 transitions. [2023-12-02 13:07:50,685 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 724 transitions. Word has length 126 [2023-12-02 13:07:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:50,686 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 724 transitions. [2023-12-02 13:07:50,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:07:50,686 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 724 transitions. [2023-12-02 13:07:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:07:50,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:50,687 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:50,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 13:07:50,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:50,888 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:07:50,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:50,888 INFO L85 PathProgramCache]: Analyzing trace with hash -649331199, now seen corresponding path program 5 times [2023-12-02 13:07:50,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:50,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648560585] [2023-12-02 13:07:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:50,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:50,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:07:50,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335001142] [2023-12-02 13:07:50,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:07:50,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:50,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:50,897 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:50,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 13:07:50,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:07:50,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:07:50,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:07:50,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:07:51,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:07:57,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648560585] [2023-12-02 13:07:57,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:07:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335001142] [2023-12-02 13:07:57,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335001142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:07:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1641995902] [2023-12-02 13:07:57,539 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:07:57,539 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:07:57,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:07:57,540 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:07:57,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:08:10,682 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:08:10,683 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:08:10,684 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:09:08,258 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37471#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:09:08,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:09:08,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:09:08,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 13:09:08,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856960138] [2023-12-02 13:09:08,259 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:09:08,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:09:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:08,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:09:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1826, Unknown=5, NotChecked=0, Total=2070 [2023-12-02 13:09:08,260 INFO L87 Difference]: Start difference. First operand 609 states and 724 transitions. Second operand has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 13:09:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:09,501 INFO L93 Difference]: Finished difference Result 745 states and 871 transitions. [2023-12-02 13:09:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:09:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 126 [2023-12-02 13:09:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:09,505 INFO L225 Difference]: With dead ends: 745 [2023-12-02 13:09:09,505 INFO L226 Difference]: Without dead ends: 743 [2023-12-02 13:09:09,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 230 SyntacticMatches, 25 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 60.6s TimeCoverageRelationStatistics Valid=296, Invalid=2351, Unknown=5, NotChecked=0, Total=2652 [2023-12-02 13:09:09,506 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 235 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:09,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 221 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 13:09:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-12-02 13:09:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 660. [2023-12-02 13:09:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 587 states have (on average 1.122657580919932) internal successors, (659), 594 states have internal predecessors, (659), 62 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 13:09:09,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 783 transitions. [2023-12-02 13:09:09,604 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 783 transitions. Word has length 126 [2023-12-02 13:09:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:09,604 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 783 transitions. [2023-12-02 13:09:09,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 13:09:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 783 transitions. [2023-12-02 13:09:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 13:09:09,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:09,605 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:09,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 13:09:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:09,806 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:09:09,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1811174143, now seen corresponding path program 6 times [2023-12-02 13:09:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:09,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983860925] [2023-12-02 13:09:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:09,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:09:09,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746434936] [2023-12-02 13:09:09,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:09:09,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:09,818 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:09,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 13:09:09,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:09:09,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:09:09,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:09:09,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 13:09:10,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:10,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983860925] [2023-12-02 13:09:10,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:09:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746434936] [2023-12-02 13:09:10,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746434936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:09:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [477662937] [2023-12-02 13:09:10,500 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:09:10,500 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:09:10,501 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:09:10,501 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:09:10,501 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:09:22,798 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:09:22,798 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:09:22,799 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:09:39,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39527#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775808) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= |ULTIMATE.start_main_~p~0#1| 9223372036854775807))' at error location [2023-12-02 13:09:39,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:09:39,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:09:39,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 13:09:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761658723] [2023-12-02 13:09:39,965 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:09:39,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:09:39,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:39,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:09:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1576, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 13:09:39,966 INFO L87 Difference]: Start difference. First operand 660 states and 783 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:09:40,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:40,276 INFO L93 Difference]: Finished difference Result 708 states and 835 transitions. [2023-12-02 13:09:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:09:40,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2023-12-02 13:09:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:40,279 INFO L225 Difference]: With dead ends: 708 [2023-12-02 13:09:40,279 INFO L226 Difference]: Without dead ends: 707 [2023-12-02 13:09:40,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 197 SyntacticMatches, 25 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=230, Invalid=1576, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 13:09:40,280 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 48 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:40,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 232 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:09:40,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-02 13:09:40,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 669. [2023-12-02 13:09:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 596 states have (on average 1.1208053691275168) internal successors, (668), 603 states have internal predecessors, (668), 62 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 13:09:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 792 transitions. [2023-12-02 13:09:40,372 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 792 transitions. Word has length 126 [2023-12-02 13:09:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:40,372 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 792 transitions. [2023-12-02 13:09:40,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:09:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 792 transitions. [2023-12-02 13:09:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 13:09:40,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:40,373 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:40,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 13:09:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:40,574 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:09:40,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 58583665, now seen corresponding path program 3 times [2023-12-02 13:09:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086342132] [2023-12-02 13:09:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:40,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:09:40,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882431769] [2023-12-02 13:09:40,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:09:40,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:40,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:40,583 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:40,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 13:09:40,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:09:40,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:09:40,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:09:40,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 13:09:41,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:41,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:41,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086342132] [2023-12-02 13:09:41,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:09:41,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882431769] [2023-12-02 13:09:41,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882431769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:09:41,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [842552933] [2023-12-02 13:09:41,269 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:09:41,269 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:09:41,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:09:41,269 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:09:41,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:09:53,371 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:09:53,372 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:09:53,372 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:10:08,270 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '41550#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 50))' at error location [2023-12-02 13:10:08,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:10:08,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:10:08,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 13:10:08,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360950425] [2023-12-02 13:10:08,270 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:10:08,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:10:08,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:10:08,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 13:10:08,272 INFO L87 Difference]: Start difference. First operand 669 states and 792 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:10:08,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:08,642 INFO L93 Difference]: Finished difference Result 697 states and 819 transitions. [2023-12-02 13:10:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:10:08,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2023-12-02 13:10:08,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:08,646 INFO L225 Difference]: With dead ends: 697 [2023-12-02 13:10:08,646 INFO L226 Difference]: Without dead ends: 696 [2023-12-02 13:10:08,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 203 SyntacticMatches, 26 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 13:10:08,647 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 51 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:08,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 174 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:10:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-02 13:10:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 669. [2023-12-02 13:10:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 596 states have (on average 1.1191275167785235) internal successors, (667), 603 states have internal predecessors, (667), 62 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 13:10:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 791 transitions. [2023-12-02 13:10:08,740 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 791 transitions. Word has length 128 [2023-12-02 13:10:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:08,741 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 791 transitions. [2023-12-02 13:10:08,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 13:10:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 791 transitions. [2023-12-02 13:10:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 13:10:08,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:08,742 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:10:08,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 13:10:08,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 13:10:08,943 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:10:08,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:08,943 INFO L85 PathProgramCache]: Analyzing trace with hash 219011441, now seen corresponding path program 4 times [2023-12-02 13:10:08,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:10:08,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132607589] [2023-12-02 13:10:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:08,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:10:08,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:10:08,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001643426] [2023-12-02 13:10:08,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 13:10:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:08,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:10:08,953 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:10:08,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 13:10:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:10:09,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:10:09,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:10:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 13:10:09,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:10:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 13:10:09,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:10:09,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132607589] [2023-12-02 13:10:09,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:10:09,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001643426] [2023-12-02 13:10:09,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001643426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:10:09,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [666295268] [2023-12-02 13:10:09,857 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:10:09,857 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:10:09,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:10:09,858 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:10:09,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:10:21,740 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:10:21,741 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:10:21,742 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:10:37,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43903#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 50))' at error location [2023-12-02 13:10:37,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:10:37,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:10:37,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-02 13:10:37,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390366210] [2023-12-02 13:10:37,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:10:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:10:37,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:10:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1674, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 13:10:37,400 INFO L87 Difference]: Start difference. First operand 669 states and 791 transitions. Second operand has 11 states, 10 states have (on average 17.8) internal successors, (178), 11 states have internal predecessors, (178), 7 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-12-02 13:10:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:41,359 INFO L93 Difference]: Finished difference Result 850 states and 999 transitions. [2023-12-02 13:10:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 13:10:41,359 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 17.8) internal successors, (178), 11 states have internal predecessors, (178), 7 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 128 [2023-12-02 13:10:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:41,362 INFO L225 Difference]: With dead ends: 850 [2023-12-02 13:10:41,363 INFO L226 Difference]: Without dead ends: 849 [2023-12-02 13:10:41,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 314 SyntacticMatches, 26 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=278, Invalid=2172, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 13:10:41,363 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 269 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:41,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 355 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 13:10:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-12-02 13:10:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 826. [2023-12-02 13:10:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 740 states have (on average 1.1175675675675676) internal successors, (827), 747 states have internal predecessors, (827), 75 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-02 13:10:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 977 transitions. [2023-12-02 13:10:41,479 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 977 transitions. Word has length 128 [2023-12-02 13:10:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:41,480 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 977 transitions. [2023-12-02 13:10:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 17.8) internal successors, (178), 11 states have internal predecessors, (178), 7 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-12-02 13:10:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 977 transitions. [2023-12-02 13:10:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 13:10:41,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:41,481 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:10:41,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 13:10:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 13:10:41,681 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-12-02 13:10:41,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1076594845, now seen corresponding path program 5 times [2023-12-02 13:10:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:10:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140642415] [2023-12-02 13:10:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:10:41,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:10:41,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151608013] [2023-12-02 13:10:41,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:10:41,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:41,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:10:41,690 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:10:41,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbeb5b1-2a0b-40c7-ab33-fba1c3551e83/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 13:10:42,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:10:42,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:10:42,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 13:10:42,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 13 proven. 73 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-02 13:11:08,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:11:08,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:11:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140642415] [2023-12-02 13:11:08,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:11:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151608013] [2023-12-02 13:11:08,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151608013] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:11:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371220288] [2023-12-02 13:11:08,843 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 13:11:08,843 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:11:08,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:11:08,844 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:11:08,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:11:20,764 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 13:11:20,765 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:11:20,767 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:11:42,447 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '46290#(and (<= 1 |ULTIMATE.start_main_~s~0#1|) (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= 0 (+ 49 |ULTIMATE.start_main_~b~0#1|)))' at error location [2023-12-02 13:11:42,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:11:42,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:11:42,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-02 13:11:42,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597820965] [2023-12-02 13:11:42,448 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:11:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:11:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:11:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:11:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2917, Unknown=12, NotChecked=0, Total=3306 [2023-12-02 13:11:42,449 INFO L87 Difference]: Start difference. First operand 826 states and 977 transitions. Second operand has 18 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 13:11:45,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:11:47,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:11:49,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:11:51,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:11:53,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:11:55,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:11:56,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:11:58,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:00,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:02,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:03,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:05,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:07,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:09,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:11,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:13,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:15,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:17,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:19,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:21,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:23,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:25,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:27,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:29,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:36,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:38,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:40,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:42,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:44,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:46,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:12:48,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]