./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya --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 cdcc8697c8b9bd3a25c95b335058fb611b45ef6a0bd08057dccc283c9b370e3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:29:42,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:29:42,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:29:42,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:29:42,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:29:42,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:29:42,346 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:29:42,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:29:42,348 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:29:42,348 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:29:42,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:29:42,349 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:29:42,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:29:42,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:29:42,351 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:29:42,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:29:42,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:29:42,352 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:29:42,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:29:42,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:29:42,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:29:42,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:29:42,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:29:42,355 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:29:42,356 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:29:42,356 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:29:42,356 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:29:42,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:29:42,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:29:42,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:29:42,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:29:42,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:42,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:29:42,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:29:42,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:29:42,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:29:42,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:29:42,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:29:42,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:29:42,368 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:29:42,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:29:42,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:29:42,369 INFO L153 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_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdcc8697c8b9bd3a25c95b335058fb611b45ef6a0bd08057dccc283c9b370e3d [2023-11-29 00:29:42,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:29:42,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:29:42,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:29:42,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:29:42,626 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:29:42,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/gcd_3+newton_3_4.i [2023-11-29 00:29:45,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:29:45,511 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:29:45,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i [2023-11-29 00:29:45,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data/adb2d95b9/52c4584428ba4bc499012711f0569b28/FLAG959d6a230 [2023-11-29 00:29:45,534 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data/adb2d95b9/52c4584428ba4bc499012711f0569b28 [2023-11-29 00:29:45,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:29:45,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:29:45,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:45,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:29:45,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:29:45,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204cc1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45, skipping insertion in model container [2023-11-29 00:29:45,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:29:45,695 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[1226,1239] [2023-11-29 00:29:45,719 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[2862,2875] [2023-11-29 00:29:45,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:45,731 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:29:45,742 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[1226,1239] [2023-11-29 00:29:45,754 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[2862,2875] [2023-11-29 00:29:45,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:45,768 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:29:45,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45 WrapperNode [2023-11-29 00:29:45,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:45,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:45,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:29:45,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:29:45,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,805 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-29 00:29:45,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:45,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:29:45,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:29:45,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:29:45,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,830 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]. [2023-11-29 00:29:45,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:29:45,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:29:45,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:29:45,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:29:45,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (1/1) ... [2023-11-29 00:29:45,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:45,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:29:45,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:29:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:29:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-29 00:29:45,919 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-29 00:29:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-29 00:29:45,919 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-29 00:29:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:29:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:29:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:29:45,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:29:45,991 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:29:45,993 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:29:46,134 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:29:46,156 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:29:46,156 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:29:46,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:46 BoogieIcfgContainer [2023-11-29 00:29:46,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:29:46,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:29:46,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:29:46,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:29:46,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:29:45" (1/3) ... [2023-11-29 00:29:46,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657b0a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:46, skipping insertion in model container [2023-11-29 00:29:46,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:45" (2/3) ... [2023-11-29 00:29:46,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657b0a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:46, skipping insertion in model container [2023-11-29 00:29:46,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:46" (3/3) ... [2023-11-29 00:29:46,165 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_4.i [2023-11-29 00:29:46,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:29:46,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 00:29:46,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:29:46,232 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=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;@62dddf73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:29:46,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 00:29:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 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) [2023-11-29 00:29:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:29:46,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:46,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:46,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:29:46,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 210916014, now seen corresponding path program 1 times [2023-11-29 00:29:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:46,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935536142] [2023-11-29 00:29:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:46,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:46,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935536142] [2023-11-29 00:29:46,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935536142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:46,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:46,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:29:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101318743] [2023-11-29 00:29:46,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:46,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:46,565 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 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) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-11-29 00:29:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:46,635 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2023-11-29 00:29:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:46,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2023-11-29 00:29:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:46,644 INFO L225 Difference]: With dead ends: 67 [2023-11-29 00:29:46,644 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 00:29:46,647 INFO L412 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 [2023-11-29 00:29:46,651 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:46,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 90 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 00:29:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-11-29 00:29:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2023-11-29 00:29:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-11-29 00:29:46,688 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 9 [2023-11-29 00:29:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:46,689 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-11-29 00:29:46,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-11-29 00:29:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-29 00:29:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:29:46,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:46,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:46,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:29:46,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:29:46,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1985923376, now seen corresponding path program 1 times [2023-11-29 00:29:46,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:46,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274707047] [2023-11-29 00:29:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:46,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:46,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:46,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274707047] [2023-11-29 00:29:46,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274707047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:46,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:46,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:29:46,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120401963] [2023-11-29 00:29:46,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:29:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:29:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:46,855 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2023-11-29 00:29:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:46,905 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-11-29 00:29:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:29:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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 [2023-11-29 00:29:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:46,907 INFO L225 Difference]: With dead ends: 34 [2023-11-29 00:29:46,907 INFO L226 Difference]: Without dead ends: 29 [2023-11-29 00:29:46,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:29:46,909 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:46,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:46,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-29 00:29:46,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-29 00:29:46,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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) [2023-11-29 00:29:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-29 00:29:46,917 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2023-11-29 00:29:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:46,917 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-29 00:29:46,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2023-11-29 00:29:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-29 00:29:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 00:29:46,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:46,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:46,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:29:46,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:29:46,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:46,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1419511809, now seen corresponding path program 1 times [2023-11-29 00:29:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:46,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936190199] [2023-11-29 00:29:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:46,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:29:46,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257905442] [2023-11-29 00:29:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:46,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:46,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:46,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:29:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:47,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:29:47,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:52,293 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse5 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256))) (or (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse1 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse0 (mod .cse1 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse0) (<= (mod (+ .cse1 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= (mod (+ .cse1 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= .cse0 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse3 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse2 (mod .cse3 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse2) (<= 128 (mod (+ .cse3 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= .cse2 127) (<= 128 (mod (+ .cse3 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse6 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse4 (mod .cse6 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse4) (= .cse5 .cse4) (<= 128 (mod (+ .cse6 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= 128 (mod (+ .cse6 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse8 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse7 (mod .cse8 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse7) (= .cse5 .cse7) (<= (mod (+ .cse8 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= (mod (+ .cse8 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse9 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse9 256)) (<= |v_ULTIMATE.start_gcd_test_~b#1_13| 127) (<= (mod (+ .cse9 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_13|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_13| 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse11 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse10 (mod .cse11 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse10) (<= 128 (mod (+ .cse11 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= (mod (+ .cse11 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= .cse10 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse13 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse12 (mod .cse13 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse12) (= .cse5 .cse12) (<= (mod (+ .cse13 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= 128 (mod (+ .cse13 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse14 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse14 256)) (<= |v_ULTIMATE.start_gcd_test_~b#1_13| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 (mod (+ .cse14 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (not (= |v_ULTIMATE.start_gcd_test_~b#1_13| 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse16 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse15 (mod .cse16 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse15) (= .cse5 .cse15) (<= 128 (mod (+ .cse16 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= (mod (+ .cse16 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse18 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse17 (mod .cse18 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse17) (<= (mod (+ .cse18 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= .cse17 127) (<= 128 (mod (+ .cse18 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))))) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) is different from false [2023-11-29 00:30:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-29 00:30:11,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936190199] [2023-11-29 00:30:39,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:39,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257905442] [2023-11-29 00:30:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257905442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:39,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:30:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:30:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145410803] [2023-11-29 00:30:39,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:39,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:30:39,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:30:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=153, Unknown=10, NotChecked=26, Total=240 [2023-11-29 00:30:39,125 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:43,414 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] [2023-11-29 00:30:47,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:31:00,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:31:04,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:31:08,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:31:09,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 139 [2023-11-29 00:31:09,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 57.4s TimeCoverageRelationStatistics Valid=71, Invalid=194, Unknown=11, NotChecked=30, Total=306 [2023-11-29 00:31:09,952 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:09,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 5 Unknown, 5 Unchecked, 20.8s Time] [2023-11-29 00:31:09,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 00:31:10,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:10,154 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-11-29 00:31:10,157 INFO L158 Benchmark]: Toolchain (without parser) took 84619.39ms. Allocated memory was 182.5MB in the beginning and 222.3MB in the end (delta: 39.8MB). Free memory was 152.1MB in the beginning and 76.6MB in the end (delta: 75.5MB). Peak memory consumption was 117.3MB. Max. memory is 16.1GB. [2023-11-29 00:31:10,157 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:31:10,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.98ms. Allocated memory is still 182.5MB. Free memory was 152.1MB in the beginning and 140.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:31:10,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.99ms. Allocated memory is still 182.5MB. Free memory was 140.2MB in the beginning and 138.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:31:10,158 INFO L158 Benchmark]: Boogie Preprocessor took 38.02ms. Allocated memory is still 182.5MB. Free memory was 138.2MB in the beginning and 136.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:31:10,159 INFO L158 Benchmark]: RCFGBuilder took 311.71ms. Allocated memory is still 182.5MB. Free memory was 136.1MB in the beginning and 122.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:31:10,159 INFO L158 Benchmark]: TraceAbstraction took 83997.63ms. Allocated memory was 182.5MB in the beginning and 222.3MB in the end (delta: 39.8MB). Free memory was 122.0MB in the beginning and 76.6MB in the end (delta: 45.3MB). Peak memory consumption was 87.9MB. Max. memory is 16.1GB. [2023-11-29 00:31:10,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.98ms. Allocated memory is still 182.5MB. Free memory was 152.1MB in the beginning and 140.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.99ms. Allocated memory is still 182.5MB. Free memory was 140.2MB in the beginning and 138.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.02ms. Allocated memory is still 182.5MB. Free memory was 138.2MB in the beginning and 136.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.71ms. Allocated memory is still 182.5MB. Free memory was 136.1MB in the beginning and 122.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 83997.63ms. Allocated memory was 182.5MB in the beginning and 222.3MB in the end (delta: 39.8MB). Free memory was 122.0MB in the beginning and 76.6MB in the end (delta: 45.3MB). Peak memory consumption was 87.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya --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 cdcc8697c8b9bd3a25c95b335058fb611b45ef6a0bd08057dccc283c9b370e3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:31:11,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:31:11,847 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 00:31:11,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:31:11,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:31:11,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:31:11,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:31:11,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:31:11,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:31:11,882 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:31:11,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:31:11,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:31:11,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:31:11,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:31:11,885 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:31:11,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:31:11,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:31:11,886 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:31:11,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:31:11,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:31:11,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:31:11,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:31:11,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:31:11,890 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:31:11,890 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:31:11,891 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:31:11,891 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:31:11,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:31:11,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:31:11,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:31:11,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:31:11,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:31:11,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:31:11,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:31:11,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:31:11,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:31:11,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:31:11,895 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:31:11,895 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:31:11,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:31:11,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:31:11,896 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:31:11,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:31:11,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:31:11,897 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:31:11,897 INFO L153 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_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdcc8697c8b9bd3a25c95b335058fb611b45ef6a0bd08057dccc283c9b370e3d [2023-11-29 00:31:12,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:31:12,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:31:12,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:31:12,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:31:12,187 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:31:12,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/gcd_3+newton_3_4.i [2023-11-29 00:31:15,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:31:15,176 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:31:15,177 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i [2023-11-29 00:31:15,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data/9cd9342f4/c0a294109a2d4b84bd7508571d48c51a/FLAG6a107a2a2 [2023-11-29 00:31:15,197 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/data/9cd9342f4/c0a294109a2d4b84bd7508571d48c51a [2023-11-29 00:31:15,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:31:15,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:31:15,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:31:15,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:31:15,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:31:15,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1a9a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15, skipping insertion in model container [2023-11-29 00:31:15,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:31:15,396 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[1226,1239] [2023-11-29 00:31:15,422 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[2862,2875] [2023-11-29 00:31:15,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:31:15,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:31:15,454 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[1226,1239] [2023-11-29 00:31:15,466 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/sv-benchmarks/c/combinations/gcd_3+newton_3_4.i[2862,2875] [2023-11-29 00:31:15,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:31:15,485 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:31:15,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15 WrapperNode [2023-11-29 00:31:15,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:31:15,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:31:15,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:31:15,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:31:15,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,527 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2023-11-29 00:31:15,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:31:15,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:31:15,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:31:15,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:31:15,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,555 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]. [2023-11-29 00:31:15,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:31:15,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:31:15,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:31:15,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:31:15,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (1/1) ... [2023-11-29 00:31:15,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:31:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:15,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:31:15,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:31:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:31:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:31:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:31:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-29 00:31:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-29 00:31:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-29 00:31:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-29 00:31:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:31:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:31:15,738 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:31:15,740 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:31:30,171 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:31:30,208 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:31:30,208 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:31:30,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:30 BoogieIcfgContainer [2023-11-29 00:31:30,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:31:30,211 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:31:30,211 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:31:30,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:31:30,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:31:15" (1/3) ... [2023-11-29 00:31:30,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff740b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:30, skipping insertion in model container [2023-11-29 00:31:30,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:15" (2/3) ... [2023-11-29 00:31:30,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff740b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:30, skipping insertion in model container [2023-11-29 00:31:30,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:30" (3/3) ... [2023-11-29 00:31:30,217 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_4.i [2023-11-29 00:31:30,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:31:30,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 00:31:30,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:31:30,272 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=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;@44997bb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:31:30,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 00:31:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 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) [2023-11-29 00:31:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:31:30,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:30,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:30,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:30,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:30,289 INFO L85 PathProgramCache]: Analyzing trace with hash 210916014, now seen corresponding path program 1 times [2023-11-29 00:31:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:31:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113406186] [2023-11-29 00:31:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:30,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:31:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:31:30,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:31:30,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:31:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:30,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:31:30,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:31:30,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:30,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:31:30,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113406186] [2023-11-29 00:31:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113406186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:30,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:30,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:31:30,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380683313] [2023-11-29 00:31:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:30,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:31:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:31:30,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:31:30,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:31:30,539 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 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) 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) [2023-11-29 00:31:35,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:31:39,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:31:45,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:31:49,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:31:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:49,531 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2023-11-29 00:31:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:31:49,533 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 [2023-11-29 00:31:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:49,538 INFO L225 Difference]: With dead ends: 61 [2023-11-29 00:31:49,538 INFO L226 Difference]: Without dead ends: 29 [2023-11-29 00:31:49,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:31:49,542 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:49,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2023-11-29 00:31:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-29 00:31:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-29 00:31:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 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) [2023-11-29 00:31:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-11-29 00:31:49,573 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 9 [2023-11-29 00:31:49,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:49,573 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-11-29 00:31:49,573 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) [2023-11-29 00:31:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-11-29 00:31:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:31:49,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:49,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:49,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:31:49,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:31:49,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:49,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash 268174316, now seen corresponding path program 1 times [2023-11-29 00:31:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:31:49,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261790131] [2023-11-29 00:31:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:49,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:31:49,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:31:49,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:31:49,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:31:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:49,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:31:49,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:31:49,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:49,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:31:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261790131] [2023-11-29 00:31:49,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261790131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:49,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:49,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:31:49,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081619268] [2023-11-29 00:31:49,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:49,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:31:49,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:31:49,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:31:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:31:49,983 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-11-29 00:31:55,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:31:59,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:03,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:08,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:12,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:16,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:16,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:16,025 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2023-11-29 00:32:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:16,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2023-11-29 00:32:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:16,252 INFO L225 Difference]: With dead ends: 39 [2023-11-29 00:32:16,252 INFO L226 Difference]: Without dead ends: 31 [2023-11-29 00:32:16,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:16,254 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:16,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 26.0s Time] [2023-11-29 00:32:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-29 00:32:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-11-29 00:32:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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) [2023-11-29 00:32:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-29 00:32:16,262 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2023-11-29 00:32:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:16,262 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-29 00:32:16,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-11-29 00:32:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-29 00:32:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:32:16,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:16,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:16,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:32:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:16,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:16,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2043181678, now seen corresponding path program 1 times [2023-11-29 00:32:16,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:16,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388789542] [2023-11-29 00:32:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:16,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:16,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:16,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:16,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:32:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:16,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:32:16,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:32:16,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:16,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388789542] [2023-11-29 00:32:16,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388789542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:16,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:32:16,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116402149] [2023-11-29 00:32:16,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:16,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:32:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:32:16,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:32:16,956 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2023-11-29 00:32:22,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:26,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:30,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:32,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:37,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:41,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:46,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:47,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:32:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:47,975 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-11-29 00:32:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:32:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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 [2023-11-29 00:32:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:48,201 INFO L225 Difference]: With dead ends: 35 [2023-11-29 00:32:48,201 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 00:32:48,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:32:48,202 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:48,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 30.9s Time] [2023-11-29 00:32:48,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 00:32:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-11-29 00:32:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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) [2023-11-29 00:32:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-29 00:32:48,208 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2023-11-29 00:32:48,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:48,209 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-29 00:32:48,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2023-11-29 00:32:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-29 00:32:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 00:32:48,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:48,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:48,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:32:48,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:48,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:48,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1419511809, now seen corresponding path program 1 times [2023-11-29 00:32:48,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:48,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778830034] [2023-11-29 00:32:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:48,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:48,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:48,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:48,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:32:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:48,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:32:48,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:32:52,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:33:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:33:21,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:33:21,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778830034] [2023-11-29 00:33:21,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778830034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:33:21,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:33:21,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:33:21,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028689476] [2023-11-29 00:33:21,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:33:21,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:33:21,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:33:21,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:33:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=177, Unknown=5, NotChecked=0, Total=240 [2023-11-29 00:33:21,921 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:24,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:33:35,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:33:36,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:33:55,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:33:59,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:34:03,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:34:07,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:11,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:15,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:34:19,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:23,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:27,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:31,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:35,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:34:39,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:34:43,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:47,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:34:51,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:34:58,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:35:02,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:35:06,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:35:10,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:35:14,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:35:18,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:35:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:21,220 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2023-11-29 00:35:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:35:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 00:35:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:21,221 INFO L225 Difference]: With dead ends: 43 [2023-11-29 00:35:21,221 INFO L226 Difference]: Without dead ends: 34 [2023-11-29 00:35:21,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=114, Invalid=340, Unknown=8, NotChecked=0, Total=462 [2023-11-29 00:35:21,223 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:21,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 252 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 21 Unknown, 0 Unchecked, 99.2s Time] [2023-11-29 00:35:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-29 00:35:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-11-29 00:35:21,230 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) [2023-11-29 00:35:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2023-11-29 00:35:21,231 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 10 [2023-11-29 00:35:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:21,231 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2023-11-29 00:35:21,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:35:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2023-11-29 00:35:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 00:35:21,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:21,233 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:35:21,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 00:35:21,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:35:21,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:35:21,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1434955805, now seen corresponding path program 1 times [2023-11-29 00:35:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:35:21,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396869863] [2023-11-29 00:35:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:21,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:35:21,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:35:21,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:35:21,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 00:35:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:25,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:35:25,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:35:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:35:48,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:37:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:37:38,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:37:38,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396869863] [2023-11-29 00:37:38,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396869863] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:37:38,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:37:38,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-29 00:37:38,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985811801] [2023-11-29 00:37:38,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:37:38,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:37:38,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:37:38,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:37:38,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=287, Unknown=9, NotChecked=0, Total=380 [2023-11-29 00:37:38,002 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 20 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:37:45,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:37:59,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:01,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:12,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:16,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:38:22,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:26,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:30,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:38:34,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:38,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:42,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:46,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:50,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:38:54,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:38:58,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:39:02,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:39:06,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:39:10,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:39:14,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:39:18,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:39:22,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:39:24,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:39:29,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:39:30,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:39:34,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:40:08,161 WARN L293 SmtUtils]: Spent 11.38s on a formula simplification. DAG size of input: 38 DAG size of output: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:40:12,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:40:16,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:40:20,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:41:53,597 WARN L293 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 52 DAG size of output: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:41:57,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:02,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:06,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:10,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:42:14,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:19,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:42:23,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:26,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:30,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:54,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:58,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:02,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:43:06,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:10,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:14,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:18,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:22,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:43:26,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:28,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:43:34,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:38,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:11,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:11,895 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2023-11-29 00:44:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:44:11,896 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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 [2023-11-29 00:44:11,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:11,897 INFO L225 Difference]: With dead ends: 47 [2023-11-29 00:44:11,897 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 00:44:11,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 304.0s TimeCoverageRelationStatistics Valid=158, Invalid=578, Unknown=20, NotChecked=0, Total=756 [2023-11-29 00:44:11,899 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 43 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 43 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:11,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 275 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 43 Unknown, 0 Unchecked, 207.9s Time] [2023-11-29 00:44:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 00:44:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-11-29 00:44:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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) [2023-11-29 00:44:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-11-29 00:44:11,911 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2023-11-29 00:44:11,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:11,911 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-11-29 00:44:11,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-11-29 00:44:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:44:11,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:11,912 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:11,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 00:44:12,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:12,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:12,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1475353663, now seen corresponding path program 2 times [2023-11-29 00:44:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:12,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491103535] [2023-11-29 00:44:12,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:12,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:12,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:12,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:12,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92a4a824-0a6b-41df-8dd4-dc460890063c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 00:44:32,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:44:32,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:32,505 WARN L260 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 00:44:32,506 INFO L285 TraceCheckSpWp]: Computing forward predicates...