./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1 --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 41ccaa2c6661b48b1b98db087da596eaf2b2fd6514e04327794ac67bb63454b3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:51:27,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:51:27,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:51:27,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:51:27,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:51:27,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:51:27,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:51:27,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:51:27,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:51:27,144 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:51:27,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:51:27,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:51:27,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:51:27,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:51:27,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:51:27,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:51:27,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:51:27,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:51:27,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:51:27,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:51:27,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:51:27,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:51:27,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:51:27,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:51:27,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:51:27,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:51:27,148 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1 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 -> 41ccaa2c6661b48b1b98db087da596eaf2b2fd6514e04327794ac67bb63454b3 [2024-12-02 11:51:27,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:51:27,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:51:27,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:51:27,389 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:51:27,389 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:51:27,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-92.i [2024-12-02 11:51:30,001 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/data/b880e9109/55f1296f45cf4cacb91a505dbacd2b8f/FLAG1a03acd06 [2024-12-02 11:51:30,227 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:51:30,227 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-92.i [2024-12-02 11:51:30,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/data/b880e9109/55f1296f45cf4cacb91a505dbacd2b8f/FLAG1a03acd06 [2024-12-02 11:51:30,583 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/data/b880e9109/55f1296f45cf4cacb91a505dbacd2b8f [2024-12-02 11:51:30,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:51:30,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:51:30,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:51:30,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:51:30,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:51:30,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6431aeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30, skipping insertion in model container [2024-12-02 11:51:30,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,607 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:51:30,706 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-92.i[916,929] [2024-12-02 11:51:30,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:51:30,788 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:51:30,796 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-92.i[916,929] [2024-12-02 11:51:30,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:51:30,844 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:51:30,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30 WrapperNode [2024-12-02 11:51:30,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:51:30,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:51:30,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:51:30,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:51:30,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,900 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2024-12-02 11:51:30,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:51:30,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:51:30,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:51:30,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:51:30,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,930 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 11:51:30,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,942 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:51:30,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:51:30,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:51:30,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:51:30,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (1/1) ... [2024-12-02 11:51:30,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:51:30,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:51:30,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:51:30,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:51:31,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:51:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:51:31,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:51:31,070 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:51:31,072 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:51:31,555 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-12-02 11:51:31,555 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:51:31,565 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:51:31,565 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 11:51:31,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:31 BoogieIcfgContainer [2024-12-02 11:51:31,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:51:31,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:51:31,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:51:31,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:51:31,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:51:30" (1/3) ... [2024-12-02 11:51:31,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cee2fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:51:31, skipping insertion in model container [2024-12-02 11:51:31,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:30" (2/3) ... [2024-12-02 11:51:31,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cee2fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:51:31, skipping insertion in model container [2024-12-02 11:51:31,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:31" (3/3) ... [2024-12-02 11:51:31,574 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-92.i [2024-12-02 11:51:31,588 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:51:31,590 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-92.i that has 2 procedures, 128 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:51:31,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:51:31,648 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;@4dec3079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:51:31,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:51:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 103 states have (on average 1.4951456310679612) internal successors, (154), 104 states have internal predecessors, (154), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 11:51:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 11:51:31,662 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:51:31,663 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1] [2024-12-02 11:51:31,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:51:31,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:51:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1087680153, now seen corresponding path program 1 times [2024-12-02 11:51:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:51:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405802499] [2024-12-02 11:51:31,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:51:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:51:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:51:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-12-02 11:51:31,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:51:31,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405802499] [2024-12-02 11:51:31,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405802499] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:51:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86634205] [2024-12-02 11:51:31,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:51:31,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:51:31,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:51:31,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:51:31,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:51:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:51:32,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:51:32,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:51:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-12-02 11:51:32,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:51:32,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86634205] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:51:32,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:51:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:51:32,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480763027] [2024-12-02 11:51:32,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:51:32,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:51:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:51:32,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:51:32,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:51:32,145 INFO L87 Difference]: Start difference. First operand has 128 states, 103 states have (on average 1.4951456310679612) internal successors, (154), 104 states have internal predecessors, (154), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 11:51:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:51:32,172 INFO L93 Difference]: Finished difference Result 253 states and 415 transitions. [2024-12-02 11:51:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:51:32,173 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 160 [2024-12-02 11:51:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:51:32,179 INFO L225 Difference]: With dead ends: 253 [2024-12-02 11:51:32,179 INFO L226 Difference]: Without dead ends: 124 [2024-12-02 11:51:32,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:51:32,184 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:51:32,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:51:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-12-02 11:51:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-12-02 11:51:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.47) internal successors, (147), 100 states have internal predecessors, (147), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 11:51:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 191 transitions. [2024-12-02 11:51:32,219 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 191 transitions. Word has length 160 [2024-12-02 11:51:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:51:32,219 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 191 transitions. [2024-12-02 11:51:32,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 11:51:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 191 transitions. [2024-12-02 11:51:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 11:51:32,222 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:51:32,223 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1] [2024-12-02 11:51:32,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:51:32,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:51:32,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:51:32,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:51:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1631294357, now seen corresponding path program 1 times [2024-12-02 11:51:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:51:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319346687] [2024-12-02 11:51:32,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:51:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:51:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:51:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:51:32,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:51:32,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319346687] [2024-12-02 11:51:32,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319346687] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:51:32,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:51:32,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:51:32,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421831900] [2024-12-02 11:51:32,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:51:32,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:51:32,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:51:32,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:51:32,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:51:32,834 INFO L87 Difference]: Start difference. First operand 124 states and 191 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:51:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:51:32,933 INFO L93 Difference]: Finished difference Result 366 states and 567 transitions. [2024-12-02 11:51:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:51:32,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2024-12-02 11:51:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:51:32,937 INFO L225 Difference]: With dead ends: 366 [2024-12-02 11:51:32,937 INFO L226 Difference]: Without dead ends: 245 [2024-12-02 11:51:32,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:51:32,938 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 135 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:51:32,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 429 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:51:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-12-02 11:51:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2024-12-02 11:51:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 196 states have (on average 1.469387755102041) internal successors, (288), 196 states have internal predecessors, (288), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-12-02 11:51:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 376 transitions. [2024-12-02 11:51:32,969 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 376 transitions. Word has length 160 [2024-12-02 11:51:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:51:32,970 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 376 transitions. [2024-12-02 11:51:32,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:51:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 376 transitions. [2024-12-02 11:51:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 11:51:32,973 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:51:32,973 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1] [2024-12-02 11:51:32,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:51:32,974 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:51:32,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:51:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1374494990, now seen corresponding path program 1 times [2024-12-02 11:51:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:51:32,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386778685] [2024-12-02 11:51:32,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:51:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:51:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:51:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:51:33,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:51:33,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386778685] [2024-12-02 11:51:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386778685] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:51:33,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:51:33,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:51:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063964890] [2024-12-02 11:51:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:51:33,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:51:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:51:33,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:51:33,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:51:33,335 INFO L87 Difference]: Start difference. First operand 243 states and 376 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:51:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:51:33,749 INFO L93 Difference]: Finished difference Result 1087 states and 1667 transitions. [2024-12-02 11:51:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:51:33,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-12-02 11:51:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:51:33,756 INFO L225 Difference]: With dead ends: 1087 [2024-12-02 11:51:33,756 INFO L226 Difference]: Without dead ends: 847 [2024-12-02 11:51:33,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:51:33,758 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 587 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:51:33,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 753 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:51:33,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-12-02 11:51:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 493. [2024-12-02 11:51:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 400 states have (on average 1.48) internal successors, (592), 400 states have internal predecessors, (592), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 11:51:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 768 transitions. [2024-12-02 11:51:33,838 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 768 transitions. Word has length 161 [2024-12-02 11:51:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:51:33,839 INFO L471 AbstractCegarLoop]: Abstraction has 493 states and 768 transitions. [2024-12-02 11:51:33,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:51:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 768 transitions. [2024-12-02 11:51:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 11:51:33,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:51:33,843 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1] [2024-12-02 11:51:33,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:51:33,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:51:33,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:51:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1240481484, now seen corresponding path program 1 times [2024-12-02 11:51:33,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:51:33,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537786278] [2024-12-02 11:51:33,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:51:33,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:51:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:51:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:51:34,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:51:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537786278] [2024-12-02 11:51:34,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537786278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:51:34,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:51:34,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:51:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987872824] [2024-12-02 11:51:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:51:34,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:51:34,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:51:34,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:51:34,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:51:34,467 INFO L87 Difference]: Start difference. First operand 493 states and 768 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:51:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:51:35,377 INFO L93 Difference]: Finished difference Result 1328 states and 2047 transitions. [2024-12-02 11:51:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:51:35,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-12-02 11:51:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:51:35,385 INFO L225 Difference]: With dead ends: 1328 [2024-12-02 11:51:35,385 INFO L226 Difference]: Without dead ends: 1082 [2024-12-02 11:51:35,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:51:35,387 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 1364 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:51:35,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 1012 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:51:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2024-12-02 11:51:35,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 642. [2024-12-02 11:51:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 528 states have (on average 1.4867424242424243) internal successors, (785), 529 states have internal predecessors, (785), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 11:51:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1001 transitions. [2024-12-02 11:51:35,442 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1001 transitions. Word has length 161 [2024-12-02 11:51:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:51:35,443 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 1001 transitions. [2024-12-02 11:51:35,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:51:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1001 transitions. [2024-12-02 11:51:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 11:51:35,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:51:35,446 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1] [2024-12-02 11:51:35,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:51:35,446 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:51:35,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:51:35,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1643248636, now seen corresponding path program 1 times [2024-12-02 11:51:35,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:51:35,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791005328] [2024-12-02 11:51:35,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:51:35,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:51:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:52:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:52:36,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:52:36,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791005328] [2024-12-02 11:52:36,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791005328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:52:36,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:52:36,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:52:36,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898814677] [2024-12-02 11:52:36,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:52:36,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:52:36,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:52:36,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:52:36,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:52:36,140 INFO L87 Difference]: Start difference. First operand 642 states and 1001 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:52:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:52:44,650 INFO L93 Difference]: Finished difference Result 2381 states and 3669 transitions. [2024-12-02 11:52:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:52:44,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-12-02 11:52:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:52:44,660 INFO L225 Difference]: With dead ends: 2381 [2024-12-02 11:52:44,660 INFO L226 Difference]: Without dead ends: 1742 [2024-12-02 11:52:44,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:52:44,663 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 807 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:52:44,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 644 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 11:52:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2024-12-02 11:52:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 863. [2024-12-02 11:52:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 749 states have (on average 1.526034712950601) internal successors, (1143), 750 states have internal predecessors, (1143), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 11:52:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1359 transitions. [2024-12-02 11:52:44,734 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1359 transitions. Word has length 161 [2024-12-02 11:52:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:52:44,735 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 1359 transitions. [2024-12-02 11:52:44,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:52:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1359 transitions. [2024-12-02 11:52:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 11:52:44,737 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:52:44,738 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1] [2024-12-02 11:52:44,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:52:44,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:52:44,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:52:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1424393918, now seen corresponding path program 1 times [2024-12-02 11:52:44,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:52:44,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164863902] [2024-12-02 11:52:44,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:52:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:52:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:52:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:52:48,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:52:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164863902] [2024-12-02 11:52:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164863902] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:52:48,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:52:48,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:52:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290406562] [2024-12-02 11:52:48,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:52:48,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:52:48,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:52:48,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:52:48,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:52:48,708 INFO L87 Difference]: Start difference. First operand 863 states and 1359 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:52:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:52:50,584 INFO L93 Difference]: Finished difference Result 2406 states and 3743 transitions. [2024-12-02 11:52:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:52:50,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-12-02 11:52:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:52:50,591 INFO L225 Difference]: With dead ends: 2406 [2024-12-02 11:52:50,591 INFO L226 Difference]: Without dead ends: 1546 [2024-12-02 11:52:50,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:52:50,594 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 389 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:52:50,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 723 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 11:52:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2024-12-02 11:52:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 863. [2024-12-02 11:52:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 749 states have (on average 1.526034712950601) internal successors, (1143), 750 states have internal predecessors, (1143), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 11:52:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1359 transitions. [2024-12-02 11:52:50,648 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1359 transitions. Word has length 161 [2024-12-02 11:52:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:52:50,649 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 1359 transitions. [2024-12-02 11:52:50,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:52:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1359 transitions. [2024-12-02 11:52:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 11:52:50,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:52:50,651 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1] [2024-12-02 11:52:50,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:52:50,652 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:52:50,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:52:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash 600351492, now seen corresponding path program 1 times [2024-12-02 11:52:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:52:50,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953951177] [2024-12-02 11:52:50,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:52:50,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:52:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:05,486 WARN L286 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 194 DAG size of output: 134 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 11:54:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:54:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953951177] [2024-12-02 11:54:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953951177] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:05,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:05,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:54:05,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817663178] [2024-12-02 11:54:05,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:05,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:54:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:05,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:54:05,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:05,504 INFO L87 Difference]: Start difference. First operand 863 states and 1359 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:15,217 INFO L93 Difference]: Finished difference Result 2406 states and 3743 transitions. [2024-12-02 11:54:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:54:15,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-12-02 11:54:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:15,222 INFO L225 Difference]: With dead ends: 2406 [2024-12-02 11:54:15,222 INFO L226 Difference]: Without dead ends: 1546 [2024-12-02 11:54:15,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:54:15,224 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 414 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:15,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 705 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-12-02 11:54:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2024-12-02 11:54:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 868. [2024-12-02 11:54:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 754 states have (on average 1.5291777188328912) internal successors, (1153), 755 states have internal predecessors, (1153), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 11:54:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1369 transitions. [2024-12-02 11:54:15,259 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1369 transitions. Word has length 161 [2024-12-02 11:54:15,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:15,260 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1369 transitions. [2024-12-02 11:54:15,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1369 transitions. [2024-12-02 11:54:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 11:54:15,261 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:15,261 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1] [2024-12-02 11:54:15,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:54:15,261 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:15,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 819206210, now seen corresponding path program 1 times [2024-12-02 11:54:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:15,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998542915] [2024-12-02 11:54:15,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:54:15,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:15,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998542915] [2024-12-02 11:54:15,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998542915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:15,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:15,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:15,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81918567] [2024-12-02 11:54:15,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:15,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:15,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:15,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:15,392 INFO L87 Difference]: Start difference. First operand 868 states and 1369 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:15,686 INFO L93 Difference]: Finished difference Result 3611 states and 5698 transitions. [2024-12-02 11:54:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:15,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-12-02 11:54:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:15,696 INFO L225 Difference]: With dead ends: 3611 [2024-12-02 11:54:15,696 INFO L226 Difference]: Without dead ends: 2746 [2024-12-02 11:54:15,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:15,699 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 465 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:15,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 961 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:54:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2024-12-02 11:54:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2465. [2024-12-02 11:54:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2198 states have (on average 1.5363967242948136) internal successors, (3377), 2205 states have internal predecessors, (3377), 251 states have call successors, (251), 15 states have call predecessors, (251), 15 states have return successors, (251), 244 states have call predecessors, (251), 251 states have call successors, (251) [2024-12-02 11:54:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3879 transitions. [2024-12-02 11:54:15,835 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3879 transitions. Word has length 161 [2024-12-02 11:54:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:15,836 INFO L471 AbstractCegarLoop]: Abstraction has 2465 states and 3879 transitions. [2024-12-02 11:54:15,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3879 transitions. [2024-12-02 11:54:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 11:54:15,839 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:15,839 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:15,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:54:15,839 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:15,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1588689141, now seen corresponding path program 1 times [2024-12-02 11:54:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:15,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777478552] [2024-12-02 11:54:15,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:54:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777478552] [2024-12-02 11:54:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777478552] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:49,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:49,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:54:49,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576302527] [2024-12-02 11:54:49,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:49,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:54:49,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:49,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:54:49,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:54:49,809 INFO L87 Difference]: Start difference. First operand 2465 states and 3879 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:58,926 INFO L93 Difference]: Finished difference Result 7387 states and 11446 transitions. [2024-12-02 11:54:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 11:54:58,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 162 [2024-12-02 11:54:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:58,936 INFO L225 Difference]: With dead ends: 7387 [2024-12-02 11:54:58,936 INFO L226 Difference]: Without dead ends: 4925 [2024-12-02 11:54:58,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:54:58,941 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 584 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:58,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1612 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 11:54:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2024-12-02 11:54:59,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2465. [2024-12-02 11:54:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2198 states have (on average 1.5363967242948136) internal successors, (3377), 2205 states have internal predecessors, (3377), 251 states have call successors, (251), 15 states have call predecessors, (251), 15 states have return successors, (251), 244 states have call predecessors, (251), 251 states have call successors, (251) [2024-12-02 11:54:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3879 transitions. [2024-12-02 11:54:59,096 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3879 transitions. Word has length 162 [2024-12-02 11:54:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:59,097 INFO L471 AbstractCegarLoop]: Abstraction has 2465 states and 3879 transitions. [2024-12-02 11:54:59,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3879 transitions. [2024-12-02 11:54:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 11:54:59,100 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:59,100 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:59,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:54:59,100 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:59,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash -932046857, now seen corresponding path program 1 times [2024-12-02 11:54:59,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:59,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439937354] [2024-12-02 11:54:59,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:59,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:54:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439937354] [2024-12-02 11:54:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439937354] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:59,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:59,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:54:59,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308512789] [2024-12-02 11:54:59,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:59,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:54:59,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:59,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:54:59,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:59,266 INFO L87 Difference]: Start difference. First operand 2465 states and 3879 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:59,546 INFO L93 Difference]: Finished difference Result 7271 states and 11298 transitions. [2024-12-02 11:54:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:54:59,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 162 [2024-12-02 11:54:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:59,558 INFO L225 Difference]: With dead ends: 7271 [2024-12-02 11:54:59,558 INFO L226 Difference]: Without dead ends: 4809 [2024-12-02 11:54:59,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:59,562 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 284 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:59,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 635 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2024-12-02 11:54:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4208. [2024-12-02 11:54:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4208 states, 3675 states have (on average 1.5047619047619047) internal successors, (5530), 3689 states have internal predecessors, (5530), 502 states have call successors, (502), 30 states have call predecessors, (502), 30 states have return successors, (502), 488 states have call predecessors, (502), 502 states have call successors, (502) [2024-12-02 11:54:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4208 states to 4208 states and 6534 transitions. [2024-12-02 11:54:59,825 INFO L78 Accepts]: Start accepts. Automaton has 4208 states and 6534 transitions. Word has length 162 [2024-12-02 11:54:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:59,825 INFO L471 AbstractCegarLoop]: Abstraction has 4208 states and 6534 transitions. [2024-12-02 11:54:59,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:54:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4208 states and 6534 transitions. [2024-12-02 11:54:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 11:54:59,828 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:59,829 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:59,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:54:59,829 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:59,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:59,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2128736495, now seen corresponding path program 1 times [2024-12-02 11:54:59,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:59,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380733285] [2024-12-02 11:54:59,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:59,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:55:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:55:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:55:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380733285] [2024-12-02 11:55:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380733285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:55:00,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:55:00,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:55:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24357130] [2024-12-02 11:55:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:55:00,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:55:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:55:00,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:55:00,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:55:00,512 INFO L87 Difference]: Start difference. First operand 4208 states and 6534 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:55:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:55:01,817 INFO L93 Difference]: Finished difference Result 20345 states and 31224 transitions. [2024-12-02 11:55:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:55:01,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 164 [2024-12-02 11:55:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:55:01,859 INFO L225 Difference]: With dead ends: 20345 [2024-12-02 11:55:01,859 INFO L226 Difference]: Without dead ends: 16140 [2024-12-02 11:55:01,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:55:01,866 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 920 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:55:01,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1550 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:55:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16140 states. [2024-12-02 11:55:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16140 to 8464. [2024-12-02 11:55:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 7707 states have (on average 1.5059037238873751) internal successors, (11606), 7725 states have internal predecessors, (11606), 706 states have call successors, (706), 50 states have call predecessors, (706), 50 states have return successors, (706), 688 states have call predecessors, (706), 706 states have call successors, (706) [2024-12-02 11:55:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 13018 transitions. [2024-12-02 11:55:02,188 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 13018 transitions. Word has length 164 [2024-12-02 11:55:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:55:02,188 INFO L471 AbstractCegarLoop]: Abstraction has 8464 states and 13018 transitions. [2024-12-02 11:55:02,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 11:55:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 13018 transitions. [2024-12-02 11:55:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 11:55:02,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:55:02,195 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:55:02,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 11:55:02,195 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:55:02,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:55:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2066696881, now seen corresponding path program 1 times [2024-12-02 11:55:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:55:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442825193] [2024-12-02 11:55:02,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:55:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:55:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:55:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 11:55:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:55:05,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442825193] [2024-12-02 11:55:05,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442825193] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:55:05,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:55:05,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 11:55:05,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671101549] [2024-12-02 11:55:05,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:55:05,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 11:55:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:55:05,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 11:55:05,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-12-02 11:55:05,313 INFO L87 Difference]: Start difference. First operand 8464 states and 13018 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 11:55:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:55:11,775 INFO L93 Difference]: Finished difference Result 18003 states and 27203 transitions. [2024-12-02 11:55:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 11:55:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 164 [2024-12-02 11:55:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:55:11,814 INFO L225 Difference]: With dead ends: 18003 [2024-12-02 11:55:11,814 INFO L226 Difference]: Without dead ends: 16351 [2024-12-02 11:55:11,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 11:55:11,821 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 1573 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 3818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:55:11,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 2518 Invalid, 3818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3470 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 11:55:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16351 states. [2024-12-02 11:55:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16351 to 10098. [2024-12-02 11:55:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10098 states, 9145 states have (on average 1.489885183160197) internal successors, (13625), 9187 states have internal predecessors, (13625), 878 states have call successors, (878), 74 states have call predecessors, (878), 74 states have return successors, (878), 836 states have call predecessors, (878), 878 states have call successors, (878) [2024-12-02 11:55:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10098 states to 10098 states and 15381 transitions. [2024-12-02 11:55:12,426 INFO L78 Accepts]: Start accepts. Automaton has 10098 states and 15381 transitions. Word has length 164 [2024-12-02 11:55:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:55:12,426 INFO L471 AbstractCegarLoop]: Abstraction has 10098 states and 15381 transitions. [2024-12-02 11:55:12,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 11:55:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10098 states and 15381 transitions. [2024-12-02 11:55:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 11:55:12,432 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:55:12,432 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:55:12,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:55:12,433 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:55:12,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:55:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2100311024, now seen corresponding path program 1 times [2024-12-02 11:55:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:55:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202777408] [2024-12-02 11:55:12,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:55:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:55:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:55:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-12-02 11:55:12,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:55:12,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202777408] [2024-12-02 11:55:12,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202777408] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:55:12,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862773539] [2024-12-02 11:55:12,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:55:12,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:55:12,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:55:12,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:55:12,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e385405-bf81-4865-a467-a98755f236d3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:55:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:55:12,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:55:12,796 INFO L279 TraceCheckSpWp]: Computing forward predicates...