./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d27ce9425b362883f32c5ccf3973d31d4f8100e5e6b8fcc1a4527c07eb2b71c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:07:50,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:07:50,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:07:50,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:07:50,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:07:50,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:07:50,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:07:50,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:07:50,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:07:50,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:07:50,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:07:50,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:07:50,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:07:50,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:07:50,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:07:50,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:07:50,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:07:50,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:07:50,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:07:50,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:07:50,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:07:50,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:07:50,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:07:50,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:07:50,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:07:50,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:07:50,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:07:50,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:07:50,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:07:50,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:07:50,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:07:50,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:07:50,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:07:50,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:07:50,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:07:50,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:07:50,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:07:50,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:07:50,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:07:50,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:07:50,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:07:50,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:07:50,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:07:50,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:07:50,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:07:50,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:07:50,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:07:50,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:07:50,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:07:50,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:07:50,417 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:07:50,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:07:50,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:07:50,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:07:50,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:07:50,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:07:50,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:07:50,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:07:50,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:07:50,419 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:07:50,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:07:50,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:07:50,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:07:50,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:07:50,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:07:50,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:07:50,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:07:50,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:07:50,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:07:50,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:07:50,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:07:50,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:07:50,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:07:50,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:07:50,423 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:07:50,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:07:50,423 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d27ce9425b362883f32c5ccf3973d31d4f8100e5e6b8fcc1a4527c07eb2b71c [2022-11-25 17:07:50,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:07:50,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:07:50,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:07:50,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:07:50,735 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:07:50,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c [2022-11-25 17:07:53,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:07:53,985 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:07:53,985 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/sv-benchmarks/c/loops-crafted-1/Mono5_1.c [2022-11-25 17:07:53,991 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/data/b5adb51d0/52114d4f0454409ca4c00d2e8c9c4c87/FLAG15298cb7c [2022-11-25 17:07:54,005 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/data/b5adb51d0/52114d4f0454409ca4c00d2e8c9c4c87 [2022-11-25 17:07:54,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:07:54,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:07:54,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:07:54,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:07:54,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:07:54,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f561e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54, skipping insertion in model container [2022-11-25 17:07:54,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:07:54,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:07:54,182 WARN L237 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_aa672e2a-a630-4325-bfa1-9aab3e951cbc/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324] [2022-11-25 17:07:54,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:07:54,203 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:07:54,214 WARN L237 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_aa672e2a-a630-4325-bfa1-9aab3e951cbc/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324] [2022-11-25 17:07:54,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:07:54,230 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:07:54,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54 WrapperNode [2022-11-25 17:07:54,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:07:54,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:07:54,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:07:54,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:07:54,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,262 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-11-25 17:07:54,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:07:54,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:07:54,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:07:54,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:07:54,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:07:54,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:07:54,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:07:54,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:07:54,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (1/1) ... [2022-11-25 17:07:54,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:07:54,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:07:54,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:07:54,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:07:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:07:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:07:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:07:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:07:54,419 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:07:54,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:07:54,607 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:07:54,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:07:54,613 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:07:54,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:07:54 BoogieIcfgContainer [2022-11-25 17:07:54,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:07:54,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:07:54,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:07:54,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:07:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:07:54" (1/3) ... [2022-11-25 17:07:54,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5418a009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:07:54, skipping insertion in model container [2022-11-25 17:07:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:54" (2/3) ... [2022-11-25 17:07:54,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5418a009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:07:54, skipping insertion in model container [2022-11-25 17:07:54,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:07:54" (3/3) ... [2022-11-25 17:07:54,623 INFO L112 eAbstractionObserver]: Analyzing ICFG Mono5_1.c [2022-11-25 17:07:54,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:07:54,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:07:54,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:07:54,711 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@d123c01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:07:54,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:07:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-25 17:07:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 17:07:54,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:07:54,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:07:54,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:07:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-11-25 17:07:54,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:54,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115590318] [2022-11-25 17:07:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115590318] [2022-11-25 17:07:54,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115590318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:54,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:54,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:07:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511830960] [2022-11-25 17:07:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:07:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:07:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:07:54,985 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:55,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:07:55,003 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-25 17:07:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:07:55,006 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), 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 [2022-11-25 17:07:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:07:55,014 INFO L225 Difference]: With dead ends: 21 [2022-11-25 17:07:55,015 INFO L226 Difference]: Without dead ends: 9 [2022-11-25 17:07:55,018 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 [2022-11-25 17:07:55,028 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:07:55,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:07:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-25 17:07:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-25 17:07:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-25 17:07:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-25 17:07:55,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-25 17:07:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:07:55,072 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-25 17:07:55,072 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), 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) [2022-11-25 17:07:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-25 17:07:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 17:07:55,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:07:55,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:07:55,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:07:55,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:07:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-11-25 17:07:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:55,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176169251] [2022-11-25 17:07:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:55,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:55,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176169251] [2022-11-25 17:07:55,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176169251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:55,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:55,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:07:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675180753] [2022-11-25 17:07:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:07:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:07:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:07:55,371 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. 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) [2022-11-25 17:07:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:07:55,399 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-25 17:07:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:07:55,399 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 [2022-11-25 17:07:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:07:55,400 INFO L225 Difference]: With dead ends: 16 [2022-11-25 17:07:55,400 INFO L226 Difference]: Without dead ends: 12 [2022-11-25 17:07:55,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:07:55,402 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:07:55,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:07:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-25 17:07:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-25 17:07:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2022-11-25 17:07:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-25 17:07:55,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-11-25 17:07:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:07:55,417 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-25 17:07:55,417 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) [2022-11-25 17:07:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-25 17:07:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:07:55,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:07:55,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:55,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:07:55,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:07:55,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash 584467323, now seen corresponding path program 1 times [2022-11-25 17:07:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:55,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802669952] [2022-11-25 17:07:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:55,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:55,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802669952] [2022-11-25 17:07:55,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802669952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:55,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:55,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:07:55,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415644669] [2022-11-25 17:07:55,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:55,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:07:55,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:07:55,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:07:55,617 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 17:07:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:07:55,633 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-11-25 17:07:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:07:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-25 17:07:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:07:55,634 INFO L225 Difference]: With dead ends: 22 [2022-11-25 17:07:55,634 INFO L226 Difference]: Without dead ends: 15 [2022-11-25 17:07:55,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:07:55,636 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:07:55,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:07:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-25 17:07:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-11-25 17:07:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-11-25 17:07:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-25 17:07:55,642 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2022-11-25 17:07:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:07:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-25 17:07:55,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 17:07:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-25 17:07:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 17:07:55,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:07:55,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:55,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:07:55,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:07:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2007312204, now seen corresponding path program 1 times [2022-11-25 17:07:55,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:55,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211152067] [2022-11-25 17:07:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:55,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:55,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211152067] [2022-11-25 17:07:55,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211152067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:07:55,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117132935] [2022-11-25 17:07:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:55,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:07:55,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:07:55,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:07:55,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:07:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:55,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:07:55,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:07:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:07:56,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:07:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:07:56,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117132935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:07:56,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:07:56,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-11-25 17:07:56,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59371607] [2022-11-25 17:07:56,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:07:56,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:07:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:07:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:07:56,142 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-11-25 17:07:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:07:56,337 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-25 17:07:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:07:56,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) Word has length 12 [2022-11-25 17:07:56,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:07:56,338 INFO L225 Difference]: With dead ends: 40 [2022-11-25 17:07:56,338 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 17:07:56,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:07:56,340 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:07:56,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 47 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:07:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 17:07:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-11-25 17:07:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2022-11-25 17:07:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-25 17:07:56,347 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 12 [2022-11-25 17:07:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:07:56,347 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-25 17:07:56,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-11-25 17:07:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-25 17:07:56,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 17:07:56,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:07:56,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:56,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:07:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-25 17:07:56,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:07:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1502357326, now seen corresponding path program 2 times [2022-11-25 17:07:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:56,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655281416] [2022-11-25 17:07:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:07:56,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:56,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655281416] [2022-11-25 17:07:56,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655281416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:07:56,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897269585] [2022-11-25 17:07:56,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:07:56,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:07:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:07:56,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:07:56,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:07:56,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:07:56,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:07:56,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 17:07:56,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:07:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:07:56,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:07:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:07:57,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897269585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:07:57,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:07:57,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 17 [2022-11-25 17:07:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932777820] [2022-11-25 17:07:57,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:07:57,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:07:57,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:57,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:07:57,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:07:57,071 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2022-11-25 17:07:57,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:07:57,871 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2022-11-25 17:07:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 17:07:57,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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 24 [2022-11-25 17:07:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:07:57,873 INFO L225 Difference]: With dead ends: 76 [2022-11-25 17:07:57,873 INFO L226 Difference]: Without dead ends: 48 [2022-11-25 17:07:57,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2022-11-25 17:07:57,874 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 53 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:07:57,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 133 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:07:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-25 17:07:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-25 17:07:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 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) [2022-11-25 17:07:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2022-11-25 17:07:57,892 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 24 [2022-11-25 17:07:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:07:57,892 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2022-11-25 17:07:57,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2022-11-25 17:07:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2022-11-25 17:07:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 17:07:57,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:07:57,894 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 10, 3, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:57,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:07:58,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:07:58,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:07:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash 314984633, now seen corresponding path program 3 times [2022-11-25 17:07:58,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:58,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548810534] [2022-11-25 17:07:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:58,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 17:07:58,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548810534] [2022-11-25 17:07:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548810534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:07:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760965505] [2022-11-25 17:07:58,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:07:58,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:07:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:07:58,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:07:58,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:07:58,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-25 17:07:58,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:07:58,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:07:58,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:07:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 17:07:58,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:07:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 17:07:58,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760965505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:07:58,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:07:58,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-11-25 17:07:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500290347] [2022-11-25 17:07:58,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:07:58,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:07:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:07:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:07:58,753 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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) [2022-11-25 17:07:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:07:59,528 INFO L93 Difference]: Finished difference Result 106 states and 132 transitions. [2022-11-25 17:07:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:07:59,529 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 45 [2022-11-25 17:07:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:07:59,529 INFO L225 Difference]: With dead ends: 106 [2022-11-25 17:07:59,529 INFO L226 Difference]: Without dead ends: 72 [2022-11-25 17:07:59,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:07:59,531 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:07:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 33 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:07:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-25 17:07:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2022-11-25 17:07:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 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) [2022-11-25 17:07:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-11-25 17:07:59,550 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 45 [2022-11-25 17:07:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:07:59,550 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-11-25 17:07:59,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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) [2022-11-25 17:07:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-11-25 17:07:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 17:07:59,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:07:59,554 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 8, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:59,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:07:59,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:07:59,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:07:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash -487009614, now seen corresponding path program 4 times [2022-11-25 17:07:59,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:59,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430225361] [2022-11-25 17:07:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:59,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 251 proven. 100 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 17:08:00,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:08:00,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430225361] [2022-11-25 17:08:00,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430225361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:08:00,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070207855] [2022-11-25 17:08:00,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:08:00,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:08:00,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:08:00,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:08:00,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:08:00,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:08:00,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:08:00,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 17:08:00,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 377 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-25 17:08:00,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:08:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 377 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-25 17:08:01,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070207855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:08:01,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:08:01,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 35 [2022-11-25 17:08:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920834087] [2022-11-25 17:08:01,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:08:01,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 17:08:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:08:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 17:08:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 17:08:01,070 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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) [2022-11-25 17:08:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:08:19,137 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2022-11-25 17:08:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-25 17:08:19,138 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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 60 [2022-11-25 17:08:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:08:19,139 INFO L225 Difference]: With dead ends: 160 [2022-11-25 17:08:19,139 INFO L226 Difference]: Without dead ends: 102 [2022-11-25 17:08:19,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=935, Invalid=3355, Unknown=0, NotChecked=0, Total=4290 [2022-11-25 17:08:19,145 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 254 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:08:19,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 478 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 17:08:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-25 17:08:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2022-11-25 17:08:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.24) internal successors, (124), 100 states have internal predecessors, (124), 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) [2022-11-25 17:08:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2022-11-25 17:08:19,187 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 60 [2022-11-25 17:08:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:08:19,187 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2022-11-25 17:08:19,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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) [2022-11-25 17:08:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2022-11-25 17:08:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 17:08:19,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:08:19,201 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 22, 9, 1, 1, 1, 1, 1, 1] [2022-11-25 17:08:19,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:19,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:08:19,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:08:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash 157606297, now seen corresponding path program 5 times [2022-11-25 17:08:19,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:08:19,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135198512] [2022-11-25 17:08:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:08:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 628 proven. 126 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-11-25 17:08:19,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:08:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135198512] [2022-11-25 17:08:19,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135198512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:08:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704007248] [2022-11-25 17:08:19,918 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:08:19,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:08:19,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:08:19,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:08:19,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:08:37,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-25 17:08:37,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:08:37,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-25 17:08:37,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 17:08:37,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:08:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 17:08:39,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704007248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:08:39,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:08:39,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 26] total 60 [2022-11-25 17:08:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010251735] [2022-11-25 17:08:39,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:08:39,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-25 17:08:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:08:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-25 17:08:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=2884, Unknown=0, NotChecked=0, Total=3540 [2022-11-25 17:08:39,550 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 60 states, 60 states have (on average 3.033333333333333) internal successors, (182), 60 states have internal predecessors, (182), 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) [2022-11-25 17:08:42,816 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296))) (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:09:49,139 WARN L233 SmtUtils]: Spent 36.95s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:10:50,679 WARN L233 SmtUtils]: Spent 29.89s on a formula simplification that was a NOOP. DAG size: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:11:53,326 WARN L233 SmtUtils]: Spent 38.55s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:11:56,581 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296))) (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:11:58,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:11:59,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 17:12:01,914 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296))) (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:12:45,450 WARN L233 SmtUtils]: Spent 24.48s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:13:33,308 WARN L233 SmtUtils]: Spent 22.93s on a formula simplification that was a NOOP. DAG size: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:14:09,541 WARN L233 SmtUtils]: Spent 16.26s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:14:49,900 WARN L233 SmtUtils]: Spent 20.10s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:15:18,203 WARN L233 SmtUtils]: Spent 15.05s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:15:53,141 WARN L233 SmtUtils]: Spent 15.78s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:15:55,241 WARN L837 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:16:16,703 WARN L233 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:16:34,793 WARN L233 SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:16:37,368 WARN L837 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:16:50,732 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:17:09,406 WARN L233 SmtUtils]: Spent 9.17s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:17:25,506 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:17:58,158 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:18:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:48,487 INFO L93 Difference]: Finished difference Result 301 states and 395 transitions. [2022-11-25 17:18:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-25 17:18:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.033333333333333) internal successors, (182), 60 states have internal predecessors, (182), 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 99 [2022-11-25 17:18:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:48,490 INFO L225 Difference]: With dead ends: 301 [2022-11-25 17:18:48,490 INFO L226 Difference]: Without dead ends: 189 [2022-11-25 17:18:48,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1738 ImplicationChecksByTransitivity, 602.1s TimeCoverageRelationStatistics Valid=2810, Invalid=9400, Unknown=20, NotChecked=1110, Total=13340 [2022-11-25 17:18:48,496 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 1092 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:48,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1894 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1933 Invalid, 1 Unknown, 11 Unchecked, 8.7s Time] [2022-11-25 17:18:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-25 17:18:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 180. [2022-11-25 17:18:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.2793296089385475) internal successors, (229), 179 states have internal predecessors, (229), 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) [2022-11-25 17:18:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 229 transitions. [2022-11-25 17:18:48,533 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 229 transitions. Word has length 99 [2022-11-25 17:18:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:48,533 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 229 transitions. [2022-11-25 17:18:48,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.033333333333333) internal successors, (182), 60 states have internal predecessors, (182), 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) [2022-11-25 17:18:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 229 transitions. [2022-11-25 17:18:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 17:18:48,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:48,536 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 23, 11, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:48,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 17:18:48,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:18:48,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:48,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:48,744 INFO L85 PathProgramCache]: Analyzing trace with hash 433573424, now seen corresponding path program 6 times [2022-11-25 17:18:48,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:48,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171840333] [2022-11-25 17:18:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:48,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 757 proven. 155 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-25 17:18:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171840333] [2022-11-25 17:18:49,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171840333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:18:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224054131] [2022-11-25 17:18:49,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:18:49,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:49,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:49,276 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:49,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:18:49,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-25 17:18:49,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:18:49,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:18:49,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2022-11-25 17:18:49,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:18:49,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224054131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:49,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:18:49,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-25 17:18:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823684604] [2022-11-25 17:18:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:18:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:18:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:18:49,610 INFO L87 Difference]: Start difference. First operand 180 states and 229 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-11-25 17:18:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:49,728 INFO L93 Difference]: Finished difference Result 404 states and 498 transitions. [2022-11-25 17:18:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:18:49,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 108 [2022-11-25 17:18:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:49,734 INFO L225 Difference]: With dead ends: 404 [2022-11-25 17:18:49,734 INFO L226 Difference]: Without dead ends: 400 [2022-11-25 17:18:49,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:18:49,738 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:49,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 13 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:18:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-25 17:18:49,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 175. [2022-11-25 17:18:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.2701149425287357) internal successors, (221), 174 states have internal predecessors, (221), 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) [2022-11-25 17:18:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 221 transitions. [2022-11-25 17:18:49,808 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 221 transitions. Word has length 108 [2022-11-25 17:18:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:49,808 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 221 transitions. [2022-11-25 17:18:49,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-11-25 17:18:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 221 transitions. [2022-11-25 17:18:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 17:18:49,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:49,816 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 26, 11, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:49,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 17:18:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:50,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1957023869, now seen corresponding path program 7 times [2022-11-25 17:18:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:50,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868677279] [2022-11-25 17:18:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:50,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 853 proven. 155 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2022-11-25 17:18:50,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:50,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868677279] [2022-11-25 17:18:50,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868677279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:18:50,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145476971] [2022-11-25 17:18:50,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:18:50,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:50,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:50,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa672e2a-a630-4325-bfa1-9aab3e951cbc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:18:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:50,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-25 17:18:50,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 1877 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-25 17:18:51,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 1877 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-25 17:18:53,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145476971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:53,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:18:53,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 30, 30] total 69 [2022-11-25 17:18:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043213425] [2022-11-25 17:18:53,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:53,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-25 17:18:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:53,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-25 17:18:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=3817, Unknown=0, NotChecked=0, Total=4692 [2022-11-25 17:18:53,737 INFO L87 Difference]: Start difference. First operand 175 states and 221 transitions. Second operand has 69 states, 69 states have (on average 3.072463768115942) internal successors, (212), 69 states have internal predecessors, (212), 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) [2022-11-25 17:18:57,196 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296))) (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967272 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967271) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967273 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967270 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:18:59,211 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296))) (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967272 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967271) 4294967296) 0)) (not (= (mod (+ 4294967273 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967270 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:20:34,649 WARN L233 SmtUtils]: Spent 55.64s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:20:38,202 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296))) (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967272 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967273 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2022-11-25 17:22:00,808 WARN L233 SmtUtils]: Spent 44.23s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)