./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cefb3bae89bbacb2fe493d14201bba1802fb381afd861fd412b13151077489a8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:23:42,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:23:42,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:23:42,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:23:42,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:23:42,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:23:42,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:23:42,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:23:42,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:23:42,167 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:23:42,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:23:42,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:23:42,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:23:42,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:23:42,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:23:42,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:23:42,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:23:42,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:23:42,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:23:42,172 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> 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 -> cefb3bae89bbacb2fe493d14201bba1802fb381afd861fd412b13151077489a8 [2024-11-13 15:23:42,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:23:42,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:23:42,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:23:42,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:23:42,484 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:23:42,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/gcd_3+newton_3_6.i Unable to find full path for "g++" [2024-11-13 15:23:44,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:23:44,666 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:23:44,667 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i [2024-11-13 15:23:44,677 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/data/50c1cf71b/3fa7484e4d214ea389e0fb51259e9bd9/FLAG8cfed18bc [2024-11-13 15:23:44,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/data/50c1cf71b/3fa7484e4d214ea389e0fb51259e9bd9 [2024-11-13 15:23:44,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:23:44,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:23:44,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:23:44,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:23:44,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:23:44,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:23:44" (1/1) ... [2024-11-13 15:23:44,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21613bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:44, skipping insertion in model container [2024-11-13 15:23:44,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:23:44" (1/1) ... [2024-11-13 15:23:44,720 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:23:44,874 WARN L250 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_442bf1dc-362b-49ed-aa40-7bc00810a104/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[1226,1239] [2024-11-13 15:23:44,921 WARN L250 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_442bf1dc-362b-49ed-aa40-7bc00810a104/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[2862,2875] [2024-11-13 15:23:44,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:23:44,938 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:23:44,955 WARN L250 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_442bf1dc-362b-49ed-aa40-7bc00810a104/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[1226,1239] [2024-11-13 15:23:44,977 WARN L250 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_442bf1dc-362b-49ed-aa40-7bc00810a104/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[2862,2875] [2024-11-13 15:23:44,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:23:45,004 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:23:45,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45 WrapperNode [2024-11-13 15:23:45,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:23:45,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:23:45,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:23:45,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:23:45,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,058 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2024-11-13 15:23:45,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:23:45,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:23:45,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:23:45,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:23:45,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,075 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,095 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-13 15:23:45,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:23:45,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:23:45,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:23:45,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:23:45,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:23:45,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:23:45,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:23:45,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:23:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:23:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-13 15:23:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-13 15:23:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-13 15:23:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-13 15:23:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:23:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:23:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:23:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:23:45,289 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:23:45,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:23:45,541 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-13 15:23:45,544 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:23:45,554 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:23:45,555 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:23:45,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:23:45 BoogieIcfgContainer [2024-11-13 15:23:45,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:23:45,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:23:45,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:23:45,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:23:45,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:23:44" (1/3) ... [2024-11-13 15:23:45,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7da7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:23:45, skipping insertion in model container [2024-11-13 15:23:45,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (2/3) ... [2024-11-13 15:23:45,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7da7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:23:45, skipping insertion in model container [2024-11-13 15:23:45,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:23:45" (3/3) ... [2024-11-13 15:23:45,567 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_6.i [2024-11-13 15:23:45,583 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:23:45,585 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_3+newton_3_6.i that has 3 procedures, 40 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 15:23:45,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:23:45,672 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4485c7c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:23:45,672 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 15:23:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:23:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:23:45,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:23:45,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:45,685 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:23:45,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1738968779, now seen corresponding path program 1 times [2024-11-13 15:23:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277758202] [2024-11-13 15:23:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:46,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277758202] [2024-11-13 15:23:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277758202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:46,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:23:46,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214375685] [2024-11-13 15:23:46,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:46,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:23:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:23:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:23:46,128 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:23:46,228 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2024-11-13 15:23:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:23:46,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 15:23:46,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:23:46,238 INFO L225 Difference]: With dead ends: 80 [2024-11-13 15:23:46,239 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 15:23:46,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:23:46,247 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:23:46,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 127 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:23:46,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 15:23:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-13 15:23:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:23:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-13 15:23:46,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2024-11-13 15:23:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:23:46,294 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-13 15:23:46,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-13 15:23:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:23:46,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:23:46,298 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:46,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:23:46,299 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:23:46,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1746651891, now seen corresponding path program 1 times [2024-11-13 15:23:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:46,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282448547] [2024-11-13 15:23:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:46,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282448547] [2024-11-13 15:23:46,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282448547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:46,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:46,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:23:46,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151061502] [2024-11-13 15:23:46,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:46,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:23:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:23:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:23:46,606 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:23:46,669 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-13 15:23:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:23:46,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 15:23:46,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:23:46,671 INFO L225 Difference]: With dead ends: 39 [2024-11-13 15:23:46,671 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 15:23:46,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:23:46,672 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:23:46,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 154 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:23:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 15:23:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 15:23:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:23:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-13 15:23:46,681 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2024-11-13 15:23:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:23:46,681 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-13 15:23:46,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-13 15:23:46,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:23:46,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:23:46,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:46,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:23:46,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:23:46,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash -87073091, now seen corresponding path program 1 times [2024-11-13 15:23:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:46,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887109646] [2024-11-13 15:23:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:23:46,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111053082] [2024-11-13 15:23:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:46,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:23:46,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:23:46,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:23:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:46,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:23:46,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:35,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:55,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:55,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887109646] [2024-11-13 15:24:55,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:24:55,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111053082] [2024-11-13 15:24:55,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111053082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:55,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:24:55,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-13 15:24:55,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3926416] [2024-11-13 15:24:55,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:55,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:24:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:24:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=194, Unknown=23, NotChecked=0, Total=272 [2024-11-13 15:24:55,371 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2024-11-13 15:24:59,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:00,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:04,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:24,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:28,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:32,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:37,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:41,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:43,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 15:25:47,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:25:57,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:26:02,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:26:06,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 15:26:16,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:26:21,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:26:47,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:26:52,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:26:56,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:27:00,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:27:04,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:27:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:27:05,266 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-13 15:27:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:27:05,267 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 [2024-11-13 15:27:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:27:05,268 INFO L225 Difference]: With dead ends: 48 [2024-11-13 15:27:05,268 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 15:27:05,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 111.7s TimeCoverageRelationStatistics Valid=106, Invalid=321, Unknown=35, NotChecked=0, Total=462 [2024-11-13 15:27:05,269 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:27:05,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 253 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 28 Unknown, 0 Unchecked, 82.1s Time] [2024-11-13 15:27:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 15:27:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-13 15:27:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:27:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-13 15:27:05,280 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12 [2024-11-13 15:27:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:27:05,280 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-13 15:27:05,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2024-11-13 15:27:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-13 15:27:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:27:05,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:27:05,281 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:27:05,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:27:05,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:27:05,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:27:05,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:27:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1530851259, now seen corresponding path program 1 times [2024-11-13 15:27:05,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:27:05,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998554606] [2024-11-13 15:27:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:05,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:27:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:27:05,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74052527] [2024-11-13 15:27:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:27:05,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:27:05,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:27:05,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:27:05,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:27:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:27:05,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:27:05,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:27:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:27:18,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:28:30,178 WARN L286 SmtUtils]: Spent 43.44s on a formula simplification. DAG size of input: 87 DAG size of output: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:30:33,143 WARN L286 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 95 DAG size of output: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:30:46,290 WARN L286 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:31:14,041 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:31:45,891 WARN L873 $PredicateComparison]: unable to prove that (or (let ((.cse17 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse18 (mod (+ .cse17 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse20 (+ (- 256) .cse18))) (let ((.cse19 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse18)) (.cse21 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse20)) (.cse11 (+ |c_ULTIMATE.start_main1_~x~0#1| 1))) (let ((.cse7 (< .cse21 .cse11)) (.cse8 (not (= 0 (mod .cse20 (mod .cse21 256))))) (.cse6 (< .cse18 128)) (.cse0 (< 127 .cse18)) (.cse2 (not (= (mod .cse18 (mod .cse19 256)) 0))) (.cse3 (< .cse19 .cse11)) (.cse4 (= .cse18 0)) (.cse5 (< 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1))) (.cse9 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse13 (mod .cse17 256))) (and (or (let ((.cse1 (let ((.cse12 (+ (- 256) .cse13))) (let ((.cse10 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse12))) (or .cse9 (< .cse10 .cse11) (not (= (mod .cse12 (mod .cse10 256)) 0))))))) (and (or .cse0 (and .cse1 (or .cse2 .cse3 .cse4 .cse5))) (or .cse6 (and .cse1 (or .cse7 .cse5 .cse8))))) (< .cse13 128)) (or (< 127 .cse13) (let ((.cse14 (= .cse17 0)) (.cse15 (let ((.cse16 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse13))) (or .cse9 (< .cse16 .cse11) (not (= (mod .cse13 (mod .cse16 256)) 0)) (= .cse13 0))))) (and (or (and (or .cse7 .cse14 .cse5 .cse8) .cse15) .cse6) (or .cse0 (and (or .cse2 .cse14 .cse3 .cse4 .cse5) .cse15))))))))))) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (< |c_ULTIMATE.start_main1_~x~0#1| 1)) is different from true [2024-11-13 15:31:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:31:57,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:31:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998554606] [2024-11-13 15:31:57,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:31:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74052527] [2024-11-13 15:31:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74052527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:31:57,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:31:57,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-11-13 15:31:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624318266] [2024-11-13 15:31:57,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:31:57,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:31:57,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:31:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:31:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=268, Unknown=28, NotChecked=36, Total=420 [2024-11-13 15:31:57,867 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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) [2024-11-13 15:32:02,998 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse24 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse4 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1)) (.cse23 (mod (+ .cse24 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256)) (.cse20 (mod .cse24 256))) (let ((.cse0 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse8 (< .cse20 128)) (.cse17 (< 127 .cse20)) (.cse13 (< 127 .cse23)) (.cse6 (= .cse23 0)) (.cse5 (= .cse24 0)) (.cse7 (< 0 .cse4)) (.cse14 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse19 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse18 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse20)) (.cse3 (= .cse20 0)) (.cse1 (+ |c_ULTIMATE.start_main1_~x~0#1| 1)) (.cse22 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse23)) (.cse2 (< |c_ULTIMATE.start_main1_~x~0#1| 1))) (and (or (not .cse0) (< |c_ULTIMATE.start_gcd_test_~a#1| .cse1) .cse2) (or (< |c_ULTIMATE.start_gcd_test_~b#1| .cse1) .cse2 (and (or (not .cse3) (and (<= .cse4 0) (not .cse5))) (or (not .cse6) .cse7))) (or .cse0 .cse2 (let ((.cse21 (mod (+ .cse24 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (let ((.cse15 (< .cse23 .cse1)) (.cse16 (not (= .cse22 0))) (.cse9 (< .cse21 .cse1)) (.cse10 (< 0 (+ |c_ULTIMATE.start_gcd_test_~b#1| 1))) (.cse11 (< 127 .cse21)) (.cse12 (not (= (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse21) 0)))) (and (or .cse8 (and (or .cse9 .cse10 .cse11 .cse7 .cse12) (or .cse13 .cse14 .cse15 .cse16 .cse7))) (or .cse17 (and (or .cse13 .cse5 .cse14 .cse15 .cse16 .cse7) (or .cse5 .cse9 .cse10 .cse11 .cse7 .cse12) (or (not (= .cse18 0)) .cse19 (< .cse20 .cse1)))))))) (or (let ((.cse34 (+ (- 256) .cse23))) (let ((.cse35 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse34))) (let ((.cse26 (not (= (mod .cse23 (mod .cse22 256)) 0))) (.cse27 (< .cse22 .cse1)) (.cse29 (< .cse35 .cse1)) (.cse30 (not (= 0 (mod .cse34 (mod .cse35 256))))) (.cse28 (< .cse23 128))) (and (or (let ((.cse25 (let ((.cse32 (+ (- 256) .cse20))) (let ((.cse31 (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse32))) (or .cse19 (< .cse31 .cse1) (not (= (mod .cse32 (mod .cse31 256)) 0))))))) (and (or .cse13 .cse14 (and .cse25 (or .cse26 .cse27 .cse6 .cse7))) (or .cse28 .cse14 (and .cse25 (or .cse29 .cse7 .cse30))))) .cse8) (or .cse17 (let ((.cse33 (or .cse19 (< .cse18 .cse1) (not (= (mod .cse20 (mod .cse18 256)) 0)) .cse3))) (and (or .cse13 .cse14 (and (or .cse26 .cse5 .cse27 .cse6 .cse7) .cse33)) (or (and (or .cse29 .cse5 .cse7 .cse30) .cse33) .cse28 .cse14)))))))) .cse2))))) is different from true [2024-11-13 15:32:45,283 WARN L286 SmtUtils]: Spent 31.05s on a formula simplification. DAG size of input: 114 DAG size of output: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:32:49,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 15:32:52,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 15:32:53,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:53,366 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-13 15:32:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:32:53,367 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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 14 [2024-11-13 15:32:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:53,368 INFO L225 Difference]: With dead ends: 53 [2024-11-13 15:32:53,368 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 15:32:53,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 191.5s TimeCoverageRelationStatistics Valid=130, Invalid=355, Unknown=29, NotChecked=86, Total=600 [2024-11-13 15:32:53,369 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:53,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 14 Unknown, 73 Unchecked, 12.2s Time] [2024-11-13 15:32:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 15:32:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2024-11-13 15:32:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:32:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-13 15:32:53,381 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 14 [2024-11-13 15:32:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:53,381 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-13 15:32:53,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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) [2024-11-13 15:32:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-13 15:32:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:32:53,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:53,382 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:53,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:32:53,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-13 15:32:53,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:32:53,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:53,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1712852029, now seen corresponding path program 2 times [2024-11-13 15:32:53,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:53,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247254101] [2024-11-13 15:32:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:32:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000675300] [2024-11-13 15:32:53,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:32:53,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:53,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:53,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442bf1dc-362b-49ed-aa40-7bc00810a104/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:32:53,871 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:32:53,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:32:53,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 15:32:53,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:33:45,891 WARN L286 SmtUtils]: Spent 13.38s on a formula simplification. DAG size of input: 106 DAG size of output: 87 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:34:07,909 WARN L286 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:34:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:34:56,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:35:40,269 WARN L286 SmtUtils]: Spent 18.04s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)