./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/vnew2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/vnew2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:02:13,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:02:13,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:02:13,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:02:13,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:02:13,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:02:13,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:02:13,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:02:13,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:02:13,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:02:13,622 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:02:13,623 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:02:13,623 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:02:13,625 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:02:13,626 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:02:13,627 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:02:13,627 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:02:13,628 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:02:13,629 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:02:13,629 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:02:13,630 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:02:13,631 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:02:13,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:02:13,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:02:13,633 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:02:13,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:02:13,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:02:13,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:02:13,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:02:13,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:02:13,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:02:13,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:02:13,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:02:13,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:02:13,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:02:13,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:02:13,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:02:13,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:02:13,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:02:13,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:02:13,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:02:13,643 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:02:13,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:02:13,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:02:13,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:02:13,645 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:02:13,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:02:13,646 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_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f [2023-11-21 19:02:14,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:02:14,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:02:14,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:02:14,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:02:14,041 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:02:14,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/loops-crafted-1/vnew2.c [2023-11-21 19:02:17,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:02:17,765 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:02:17,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/sv-benchmarks/c/loops-crafted-1/vnew2.c [2023-11-21 19:02:17,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/data/f5286c146/b9d98f934a7f4a05baf590a8f42f9490/FLAG0388ae23f [2023-11-21 19:02:17,801 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/data/f5286c146/b9d98f934a7f4a05baf590a8f42f9490 [2023-11-21 19:02:17,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:02:17,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:02:17,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:02:17,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:02:17,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:02:17,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:02:17" (1/1) ... [2023-11-21 19:02:17,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a293eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:17, skipping insertion in model container [2023-11-21 19:02:17,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:02:17" (1/1) ... [2023-11-21 19:02:17,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:02:18,046 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/sv-benchmarks/c/loops-crafted-1/vnew2.c[403,416] [2023-11-21 19:02:18,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:02:18,088 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:02:18,104 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/sv-benchmarks/c/loops-crafted-1/vnew2.c[403,416] [2023-11-21 19:02:18,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:02:18,130 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:02:18,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18 WrapperNode [2023-11-21 19:02:18,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:02:18,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:02:18,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:02:18,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:02:18,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,178 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-21 19:02:18,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:02:18,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:02:18,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:02:18,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:02:18,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:02:18,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:02:18,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:02:18,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:02:18,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (1/1) ... [2023-11-21 19:02:18,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:02:18,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:02:18,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:02:18,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:02:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:02:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:02:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:02:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:02:18,373 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:02:18,375 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:02:18,545 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:02:18,587 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:02:18,588 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:02:18,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:02:18 BoogieIcfgContainer [2023-11-21 19:02:18,590 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:02:18,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:02:18,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:02:18,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:02:18,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:02:17" (1/3) ... [2023-11-21 19:02:18,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8e904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:02:18, skipping insertion in model container [2023-11-21 19:02:18,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:18" (2/3) ... [2023-11-21 19:02:18,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8e904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:02:18, skipping insertion in model container [2023-11-21 19:02:18,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:02:18" (3/3) ... [2023-11-21 19:02:18,602 INFO L112 eAbstractionObserver]: Analyzing ICFG vnew2.c [2023-11-21 19:02:18,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:02:18,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:02:18,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:02:18,693 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;@140ece63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:02:18,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:02:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:02:18,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:18,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 19:02:18,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:02:18,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2069066476, now seen corresponding path program 1 times [2023-11-21 19:02:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:18,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810773998] [2023-11-21 19:02:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:18,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:02:18,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105341889] [2023-11-21 19:02:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:02:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:02:18,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:02:18,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:02:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:02:18,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:02:18,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:02:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:02:19,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:02:19,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810773998] [2023-11-21 19:02:19,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:02:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105341889] [2023-11-21 19:02:19,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105341889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:02:19,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:02:19,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:02:19,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711636976] [2023-11-21 19:02:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:02:19,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:02:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:02:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:02:19,156 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:19,229 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2023-11-21 19:02:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:02:19,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 19:02:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:19,243 INFO L225 Difference]: With dead ends: 24 [2023-11-21 19:02:19,243 INFO L226 Difference]: Without dead ends: 8 [2023-11-21 19:02:19,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:02:19,252 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:02:19,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:02:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-21 19:02:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-21 19:02:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-21 19:02:19,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-11-21 19:02:19,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:02:19,295 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-21 19:02:19,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-21 19:02:19,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 19:02:19,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:19,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:02:19,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 19:02:19,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:02:19,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:02:19,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash -307761058, now seen corresponding path program 1 times [2023-11-21 19:02:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:19,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592186258] [2023-11-21 19:02:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:19,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:02:19,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879132562] [2023-11-21 19:02:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:19,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:02:19,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:02:19,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:02:19,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:02:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:02:19,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 19:02:19,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:02:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:02:19,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:02:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:02:20,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:20,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592186258] [2023-11-21 19:02:20,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:02:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879132562] [2023-11-21 19:02:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879132562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:02:20,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [669317465] [2023-11-21 19:02:20,331 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-21 19:02:20,332 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:02:20,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:02:20,342 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:02:20,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:02:20,809 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:02:21,211 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '118#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) (= ~SIZE~0 20000001) (or (not (= (mod |ULTIMATE.start_main_~j~0#1| 4294967296) (mod |ULTIMATE.start_main_~k~0#1| 4294967296))) (not (= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296))) (= 0 (mod (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 20000003))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-21 19:02:21,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:02:21,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:02:21,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-21 19:02:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793509889] [2023-11-21 19:02:21,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 19:02:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 19:02:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:21,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 19:02:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-21 19:02:21,215 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:23,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-21 19:02:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:24,389 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2023-11-21 19:02:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 19:02:24,390 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 19:02:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:24,390 INFO L225 Difference]: With dead ends: 19 [2023-11-21 19:02:24,390 INFO L226 Difference]: Without dead ends: 11 [2023-11-21 19:02:24,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-11-21 19:02:24,393 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:02:24,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-21 19:02:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-21 19:02:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-21 19:02:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-21 19:02:24,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-21 19:02:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:02:24,401 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-21 19:02:24,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-21 19:02:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:02:24,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:24,402 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-21 19:02:24,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:02:24,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-21 19:02:24,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:02:24,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1421852820, now seen corresponding path program 2 times [2023-11-21 19:02:24,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:24,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962454337] [2023-11-21 19:02:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:24,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:24,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:02:24,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920904137] [2023-11-21 19:02:24,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 19:02:24,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:02:24,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:02:24,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:02:24,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:02:24,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 19:02:24,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:02:24,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-21 19:02:24,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:02:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:02:25,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:02:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:02:26,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:26,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962454337] [2023-11-21 19:02:26,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:02:26,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920904137] [2023-11-21 19:02:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920904137] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:02:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940036419] [2023-11-21 19:02:26,505 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-21 19:02:26,506 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:02:26,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:02:26,506 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:02:26,507 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:02:26,769 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:02:27,353 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '245#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) (= ~SIZE~0 20000001) (or (not (= (mod |ULTIMATE.start_main_~j~0#1| 4294967296) (mod |ULTIMATE.start_main_~k~0#1| 4294967296))) (not (= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296))) (= 0 (mod (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 20000003))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-21 19:02:27,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:02:27,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:02:27,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-21 19:02:27,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384021090] [2023-11-21 19:02:27,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 19:02:27,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 19:02:27,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:27,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 19:02:27,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-11-21 19:02:27,357 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:52,904 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-21 19:02:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 19:02:52,905 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-21 19:02:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:52,906 INFO L225 Difference]: With dead ends: 31 [2023-11-21 19:02:52,906 INFO L226 Difference]: Without dead ends: 17 [2023-11-21 19:02:52,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=246, Invalid=744, Unknown=2, NotChecked=0, Total=992 [2023-11-21 19:02:52,909 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 48 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:02:52,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 13 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-21 19:02:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-21 19:02:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-21 19:02:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-21 19:02:52,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-11-21 19:02:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:02:52,918 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-21 19:02:52,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-21 19:02:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 19:02:52,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:52,920 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-21 19:02:52,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:02:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:02:53,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:02:53,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash 655374892, now seen corresponding path program 3 times [2023-11-21 19:02:53,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550672583] [2023-11-21 19:02:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:53,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:02:53,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404976649] [2023-11-21 19:02:53,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 19:02:53,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:02:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:02:53,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:02:53,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a88ef1e-ecff-4569-8246-9c9f68ad95db/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:02:53,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 19:02:53,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:02:53,327 WARN L260 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-21 19:02:53,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:02:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:02:53,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:02:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:02:55,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:55,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550672583] [2023-11-21 19:02:55,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:02:55,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404976649] [2023-11-21 19:02:55,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404976649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:02:55,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2143564571] [2023-11-21 19:02:55,607 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-21 19:02:55,607 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:02:55,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:02:55,608 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:02:55,609 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:02:55,823 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:02:56,521 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '461#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) (= ~SIZE~0 20000001) (or (not (= (mod |ULTIMATE.start_main_~j~0#1| 4294967296) (mod |ULTIMATE.start_main_~k~0#1| 4294967296))) (not (= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~j~0#1| 4294967296))) (= 0 (mod (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 20000003))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-21 19:02:56,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:02:56,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:02:56,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-21 19:02:56,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757242616] [2023-11-21 19:02:56,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 19:02:56,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-21 19:02:56,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-21 19:02:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 19:02:56,525 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 29 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:02:58,669 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse3 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 27) 4294967296)) (.cse13 (mod (+ 21 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse5 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 24) 4294967296)) (.cse8 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse17 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse19 (mod (+ 15 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse14 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 18) 4294967296)) (.cse6 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse10 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse4 (mod (+ 2 c_~SIZE~0) 4294967296))) (and (= .cse0 .cse1) (or (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 27) 4294967296))) (and (= (mod (+ 27 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse2) (= .cse3 .cse2) (not (= (mod (mod .cse3 .cse4) 4294967296) 0)))) (< .cse3 (+ .cse5 1))) (or (< .cse6 (+ .cse0 1)) (let ((.cse7 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 3) 4294967296))) (and (= .cse7 (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse6 .cse4) 4294967296) 0)) (= .cse6 .cse7)))) (or (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 9) 4294967296))) (and (= .cse8 .cse9) (not (= (mod (mod .cse8 .cse4) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse9))) (< .cse8 (+ .cse10 1))) (= .cse1 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (not (= (mod (mod .cse0 .cse4) 4294967296) 0)) (let ((.cse11 (mod (+ 30 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or (< .cse11 (+ .cse3 1)) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 30) 4294967296))) (and (= (mod (+ 30 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse12) (= .cse11 .cse12) (not (= (mod (mod .cse11 .cse4) 4294967296) 0)))))) (or (< .cse13 (+ .cse14 1)) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 21) 4294967296))) (and (= (mod (+ 21 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse15) (not (= (mod (mod .cse13 .cse4) 4294967296) 0)) (= .cse15 .cse13)))) (or (< .cse5 (+ .cse13 1)) (let ((.cse16 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 24) 4294967296))) (and (not (= (mod (mod .cse5 .cse4) 4294967296) 0)) (= .cse16 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 24) 4294967296)) (= .cse16 .cse5)))) (or (< .cse17 (+ .cse8 1)) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296))) (and (= .cse17 .cse18) (not (= (mod (mod .cse17 .cse4) 4294967296) 0)) (= (mod (+ 12 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse18)))) (or (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 15) 4294967296))) (and (= .cse19 .cse20) (= .cse20 (mod (+ 15 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse19 .cse4) 4294967296) 0)))) (< .cse19 (+ .cse17 1))) (= 20000001 c_~SIZE~0) (or (< .cse14 (+ .cse19 1)) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 18) 4294967296))) (and (not (= (mod (mod .cse14 .cse4) 4294967296) 0)) (= .cse21 .cse14) (= .cse21 (mod (+ 18 |c_ULTIMATE.start_main_~k~0#1|) 4294967296))))) (or (< .cse10 (+ .cse6 1)) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 6) 4294967296))) (and (= .cse22 (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (= .cse22 .cse10) (not (= (mod (mod .cse10 .cse4) 4294967296) 0))))))) is different from false