./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:33:37,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:33:37,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:33:37,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:33:37,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:33:37,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:33:37,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:33:37,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:33:37,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:33:37,612 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:33:37,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:33:37,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:33:37,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:33:37,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:33:37,616 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:33:37,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:33:37,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:33:37,616 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:33:37,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:33:37,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:33:37,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:33:37,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:33:37,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:33:37,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:33:37,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:33:37,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:33:37,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:33:37,619 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:33:37,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:33:37,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:33:37,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:33:37,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:33:37,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:33:37,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:33:37,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:33:37,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:33:37,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:33:37,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:33:37,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:33:37,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:33:37,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:33:37,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:33:37,623 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 [2024-11-21 20:33:37,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:33:37,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:33:37,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:33:37,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:33:37,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:33:37,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2024-11-21 20:33:39,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:33:39,178 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:33:39,179 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2024-11-21 20:33:39,186 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa1d0053/0507c0aa369c45528d7b9040431b7529/FLAG9823466c5 [2024-11-21 20:33:39,589 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa1d0053/0507c0aa369c45528d7b9040431b7529 [2024-11-21 20:33:39,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:33:39,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:33:39,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:33:39,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:33:39,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:33:39,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3174136c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39, skipping insertion in model container [2024-11-21 20:33:39,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:33:39,761 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2024-11-21 20:33:39,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:33:39,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:33:39,807 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2024-11-21 20:33:39,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:33:39,841 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:33:39,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39 WrapperNode [2024-11-21 20:33:39,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:33:39,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:33:39,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:33:39,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:33:39,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,870 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 196 [2024-11-21 20:33:39,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:33:39,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:33:39,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:33:39,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:33:39,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,926 INFO L175 MemorySlicer]: Split 24 memory accesses to 11 slices as follows [2, 2, 2, 2, 3, 2, 2, 2, 3, 2, 2]. 13 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1]. [2024-11-21 20:33:39,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:33:39,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:33:39,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:33:39,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:33:39,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (1/1) ... [2024-11-21 20:33:39,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:33:39,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:33:39,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 20:33:39,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 20:33:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:33:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:33:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:33:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:33:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-21 20:33:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-21 20:33:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-21 20:33:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-21 20:33:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-21 20:33:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-21 20:33:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-21 20:33:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-21 20:33:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-21 20:33:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-21 20:33:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:33:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:33:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-21 20:33:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-21 20:33:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-21 20:33:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:33:40,116 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:33:40,118 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:33:40,340 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-21 20:33:40,340 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:33:40,351 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:33:40,352 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-21 20:33:40,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:33:40 BoogieIcfgContainer [2024-11-21 20:33:40,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:33:40,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:33:40,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:33:40,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:33:40,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:33:39" (1/3) ... [2024-11-21 20:33:40,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf8251a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:33:40, skipping insertion in model container [2024-11-21 20:33:40,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:33:39" (2/3) ... [2024-11-21 20:33:40,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf8251a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:33:40, skipping insertion in model container [2024-11-21 20:33:40,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:33:40" (3/3) ... [2024-11-21 20:33:40,359 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.i [2024-11-21 20:33:40,372 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:33:40,372 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:33:40,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:33:40,418 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5501bc17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:33:40,419 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:33:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-21 20:33:40,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:33:40,427 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:33:40,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:33:40,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:33:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1887916137, now seen corresponding path program 1 times [2024-11-21 20:33:40,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:33:40,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714015994] [2024-11-21 20:33:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:33:40,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:33:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:33:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:33:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:33:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714015994] [2024-11-21 20:33:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714015994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:33:40,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:33:40,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:33:40,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203993310] [2024-11-21 20:33:40,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:33:40,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:33:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:33:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:33:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:33:40,732 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:33:40,754 INFO L93 Difference]: Finished difference Result 82 states and 126 transitions. [2024-11-21 20:33:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:33:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2024-11-21 20:33:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:33:40,761 INFO L225 Difference]: With dead ends: 82 [2024-11-21 20:33:40,762 INFO L226 Difference]: Without dead ends: 40 [2024-11-21 20:33:40,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:33:40,766 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:33:40,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 97 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:33:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-21 20:33:40,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-11-21 20:33:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-21 20:33:40,798 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 25 [2024-11-21 20:33:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:33:40,799 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-21 20:33:40,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-21 20:33:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-21 20:33:40,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:33:40,802 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:33:40,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:33:40,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:33:40,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:33:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash -166940861, now seen corresponding path program 1 times [2024-11-21 20:33:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:33:40,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605470923] [2024-11-21 20:33:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:33:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:33:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:33:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:33:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:33:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605470923] [2024-11-21 20:33:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605470923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:33:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187719015] [2024-11-21 20:33:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:33:40,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:40,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:33:40,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:33:40,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:33:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:33:41,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 20:33:41,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:33:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:33:41,110 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:33:41,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187719015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:33:41,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:33:41,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 20:33:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538882684] [2024-11-21 20:33:41,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:33:41,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:33:41,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:33:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:33:41,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:33:41,112 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:33:41,194 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2024-11-21 20:33:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:33:41,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2024-11-21 20:33:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:33:41,196 INFO L225 Difference]: With dead ends: 88 [2024-11-21 20:33:41,196 INFO L226 Difference]: Without dead ends: 57 [2024-11-21 20:33:41,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:33:41,199 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:33:41,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:33:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-21 20:33:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2024-11-21 20:33:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-21 20:33:41,208 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2024-11-21 20:33:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:33:41,208 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-21 20:33:41,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-21 20:33:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-21 20:33:41,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:33:41,210 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:33:41,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 20:33:41,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:41,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:33:41,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:33:41,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1109508687, now seen corresponding path program 1 times [2024-11-21 20:33:41,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:33:41,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685377169] [2024-11-21 20:33:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:33:41,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:33:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:33:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-21 20:33:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:33:41,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685377169] [2024-11-21 20:33:41,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685377169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:33:41,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902270393] [2024-11-21 20:33:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:33:41,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:41,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:33:41,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:33:41,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:33:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:33:41,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:33:41,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:33:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-21 20:33:41,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:33:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-21 20:33:41,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902270393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:33:41,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:33:41,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:33:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378822944] [2024-11-21 20:33:41,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:33:41,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:33:41,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:33:41,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:33:41,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:33:41,648 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:33:41,669 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2024-11-21 20:33:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:33:41,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-21 20:33:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:33:41,670 INFO L225 Difference]: With dead ends: 97 [2024-11-21 20:33:41,670 INFO L226 Difference]: Without dead ends: 54 [2024-11-21 20:33:41,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:33:41,671 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:33:41,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 134 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:33:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-21 20:33:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-21 20:33:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-21 20:33:41,676 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 45 [2024-11-21 20:33:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:33:41,676 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-21 20:33:41,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-21 20:33:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-21 20:33:41,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:33:41,677 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:33:41,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:33:41,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-21 20:33:41,878 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:33:41,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:33:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1235875349, now seen corresponding path program 2 times [2024-11-21 20:33:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:33:41,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501912641] [2024-11-21 20:33:41,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:33:41,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:33:41,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:33:41,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:33:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-21 20:33:42,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:33:42,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501912641] [2024-11-21 20:33:42,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501912641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:33:42,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201025890] [2024-11-21 20:33:42,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:33:42,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:42,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:33:42,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:33:42,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:33:42,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:33:42,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:33:42,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:33:42,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:33:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-21 20:33:42,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:33:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-21 20:33:42,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201025890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:33:42,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:33:42,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-21 20:33:42,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292154786] [2024-11-21 20:33:42,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:33:42,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:33:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:33:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:33:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:33:42,284 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:33:42,439 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2024-11-21 20:33:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-21 20:33:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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 51 [2024-11-21 20:33:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:33:42,441 INFO L225 Difference]: With dead ends: 136 [2024-11-21 20:33:42,441 INFO L226 Difference]: Without dead ends: 93 [2024-11-21 20:33:42,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:33:42,442 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:33:42,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 89 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:33:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-21 20:33:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-11-21 20:33:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2024-11-21 20:33:42,452 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 51 [2024-11-21 20:33:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:33:42,453 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2024-11-21 20:33:42,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2024-11-21 20:33:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-21 20:33:42,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:33:42,458 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:33:42,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 20:33:42,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:42,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:33:42,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:33:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2120427341, now seen corresponding path program 3 times [2024-11-21 20:33:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:33:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167321726] [2024-11-21 20:33:42,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:33:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:33:42,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:33:42,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:33:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-21 20:33:42,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:33:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167321726] [2024-11-21 20:33:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167321726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:33:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055604366] [2024-11-21 20:33:42,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:33:42,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:42,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:33:42,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:33:42,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:33:42,899 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:33:42,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:33:42,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:33:42,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:33:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-21 20:33:42,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:33:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-21 20:33:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055604366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:33:42,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:33:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-21 20:33:42,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320928535] [2024-11-21 20:33:42,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:33:42,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-21 20:33:42,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:33:42,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-21 20:33:42,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:33:42,962 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:33:43,169 INFO L93 Difference]: Finished difference Result 211 states and 265 transitions. [2024-11-21 20:33:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 20:33:43,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 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 81 [2024-11-21 20:33:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:33:43,171 INFO L225 Difference]: With dead ends: 211 [2024-11-21 20:33:43,171 INFO L226 Difference]: Without dead ends: 156 [2024-11-21 20:33:43,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:33:43,172 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 98 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:33:43,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 52 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:33:43,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-21 20:33:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-21 20:33:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.070967741935484) internal successors, (166), 155 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2024-11-21 20:33:43,192 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 81 [2024-11-21 20:33:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:33:43,192 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2024-11-21 20:33:43,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2024-11-21 20:33:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-21 20:33:43,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:33:43,196 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:33:43,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 20:33:43,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:43,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:33:43,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:33:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2012091899, now seen corresponding path program 4 times [2024-11-21 20:33:43,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:33:43,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752117624] [2024-11-21 20:33:43,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:33:43,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:33:43,455 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:33:43,455 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:33:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-21 20:33:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:33:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752117624] [2024-11-21 20:33:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752117624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:33:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129375961] [2024-11-21 20:33:43,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:33:43,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:43,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:33:43,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:33:43,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:33:43,873 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:33:43,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:33:43,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-21 20:33:43,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:33:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-21 20:33:43,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:33:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-21 20:33:43,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129375961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:33:43,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:33:43,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-21 20:33:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205973814] [2024-11-21 20:33:43,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:33:43,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-21 20:33:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:33:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-21 20:33:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:33:43,983 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:33:44,358 INFO L93 Difference]: Finished difference Result 419 states and 509 transitions. [2024-11-21 20:33:44,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-21 20:33:44,359 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 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 153 [2024-11-21 20:33:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:33:44,361 INFO L225 Difference]: With dead ends: 419 [2024-11-21 20:33:44,361 INFO L226 Difference]: Without dead ends: 300 [2024-11-21 20:33:44,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:33:44,362 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 226 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:33:44,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 74 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:33:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-21 20:33:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2024-11-21 20:33:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.0367892976588629) internal successors, (310), 299 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 310 transitions. [2024-11-21 20:33:44,388 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 310 transitions. Word has length 153 [2024-11-21 20:33:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:33:44,388 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 310 transitions. [2024-11-21 20:33:44,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:33:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 310 transitions. [2024-11-21 20:33:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-21 20:33:44,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:33:44,397 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:33:44,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 20:33:44,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:44,598 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:33:44,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:33:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash -510425227, now seen corresponding path program 5 times [2024-11-21 20:33:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:33:44,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603948048] [2024-11-21 20:33:44,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:33:44,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:33:44,877 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-21 20:33:44,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:33:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2024-11-21 20:33:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:33:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603948048] [2024-11-21 20:33:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603948048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:33:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137825812] [2024-11-21 20:33:45,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:33:45,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:33:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:33:45,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:33:45,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process