./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl --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 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:37,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:37,788 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:18:37,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:37,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:37,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:37,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:37,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:37,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:37,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:37,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:37,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:37,849 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:37,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:37,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:18:37,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:37,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:37,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:37,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:37,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:18:37,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:37,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:18:37,855 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:37,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:18:37,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:37,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:37,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:37,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:37,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:37,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:37,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:37,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:18:37,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:37,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:37,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:37,861 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:18:37,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:37,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:37,862 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:37,862 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e [2023-11-12 02:18:38,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:38,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:38,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:38,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:38,147 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:38,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-12 02:18:41,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:41,525 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:41,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-12 02:18:41,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/data/578e9a6b9/018777c70c904d5aab95061642daf631/FLAG0e345d27d [2023-11-12 02:18:41,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/data/578e9a6b9/018777c70c904d5aab95061642daf631 [2023-11-12 02:18:41,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:41,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:41,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:41,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:41,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:41,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:41" (1/1) ... [2023-11-12 02:18:41,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a96d75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:41, skipping insertion in model container [2023-11-12 02:18:41,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:41" (1/1) ... [2023-11-12 02:18:41,646 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:41,883 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2023-11-12 02:18:41,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:41,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:41,984 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2023-11-12 02:18:42,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:42,026 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:42,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42 WrapperNode [2023-11-12 02:18:42,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:42,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:42,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:42,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:42,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,104 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 449 [2023-11-12 02:18:42,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:42,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:42,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:42,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:42,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:42,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:42,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:42,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:42,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:42,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:42,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:42,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:42,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:42,479 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:42,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:43,092 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:43,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:43,101 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:18:43,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:43 BoogieIcfgContainer [2023-11-12 02:18:43,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:43,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:43,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:43,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:43,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:41" (1/3) ... [2023-11-12 02:18:43,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5661b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:43, skipping insertion in model container [2023-11-12 02:18:43,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42" (2/3) ... [2023-11-12 02:18:43,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5661b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:43, skipping insertion in model container [2023-11-12 02:18:43,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:43" (3/3) ... [2023-11-12 02:18:43,119 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-12 02:18:43,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:43,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:18:43,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:43,220 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7659cd00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:43,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:18:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-12 02:18:43,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:43,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:43,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:43,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2023-11-12 02:18:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298763805] [2023-11-12 02:18:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:43,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:43,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298763805] [2023-11-12 02:18:43,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298763805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:43,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:43,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16725336] [2023-11-12 02:18:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:43,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:43,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:43,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:43,783 INFO L87 Difference]: Start difference. First operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:43,855 INFO L93 Difference]: Finished difference Result 250 states and 403 transitions. [2023-11-12 02:18:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:43,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-12 02:18:43,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:43,870 INFO L225 Difference]: With dead ends: 250 [2023-11-12 02:18:43,870 INFO L226 Difference]: Without dead ends: 166 [2023-11-12 02:18:43,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:43,877 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 129 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:43,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 393 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:18:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-12 02:18:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2023-11-12 02:18:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 163 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 245 transitions. [2023-11-12 02:18:43,930 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 245 transitions. Word has length 48 [2023-11-12 02:18:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:43,931 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 245 transitions. [2023-11-12 02:18:43,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 245 transitions. [2023-11-12 02:18:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-12 02:18:43,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:43,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:43,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:43,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:43,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash 809542357, now seen corresponding path program 1 times [2023-11-12 02:18:43,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:43,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608501768] [2023-11-12 02:18:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:43,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:44,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:44,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608501768] [2023-11-12 02:18:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608501768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334913068] [2023-11-12 02:18:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:44,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:44,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:44,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:44,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:44,154 INFO L87 Difference]: Start difference. First operand 164 states and 245 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:44,218 INFO L93 Difference]: Finished difference Result 406 states and 629 transitions. [2023-11-12 02:18:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:44,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-12 02:18:44,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:44,223 INFO L225 Difference]: With dead ends: 406 [2023-11-12 02:18:44,224 INFO L226 Difference]: Without dead ends: 269 [2023-11-12 02:18:44,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:44,227 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:44,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:18:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-12 02:18:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2023-11-12 02:18:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5338345864661653) internal successors, (408), 266 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 408 transitions. [2023-11-12 02:18:44,256 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 408 transitions. Word has length 48 [2023-11-12 02:18:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:44,257 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 408 transitions. [2023-11-12 02:18:44,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 408 transitions. [2023-11-12 02:18:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-12 02:18:44,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:44,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:44,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:44,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:44,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash 981236370, now seen corresponding path program 1 times [2023-11-12 02:18:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166379588] [2023-11-12 02:18:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166379588] [2023-11-12 02:18:44,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166379588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:44,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:44,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:44,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628239077] [2023-11-12 02:18:44,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:44,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:44,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:44,419 INFO L87 Difference]: Start difference. First operand 267 states and 408 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:44,464 INFO L93 Difference]: Finished difference Result 683 states and 1066 transitions. [2023-11-12 02:18:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:44,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-12 02:18:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:44,473 INFO L225 Difference]: With dead ends: 683 [2023-11-12 02:18:44,473 INFO L226 Difference]: Without dead ends: 443 [2023-11-12 02:18:44,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:44,488 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 98 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:44,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 317 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:18:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-12 02:18:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2023-11-12 02:18:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.5454545454545454) internal successors, (680), 440 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 680 transitions. [2023-11-12 02:18:44,551 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 680 transitions. Word has length 49 [2023-11-12 02:18:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:44,552 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 680 transitions. [2023-11-12 02:18:44,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 680 transitions. [2023-11-12 02:18:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 02:18:44,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:44,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:44,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:44,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:44,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:44,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1328032366, now seen corresponding path program 1 times [2023-11-12 02:18:44,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:44,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065288615] [2023-11-12 02:18:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:44,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065288615] [2023-11-12 02:18:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065288615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:44,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345893531] [2023-11-12 02:18:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:44,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:44,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:44,699 INFO L87 Difference]: Start difference. First operand 441 states and 680 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:44,728 INFO L93 Difference]: Finished difference Result 1141 states and 1778 transitions. [2023-11-12 02:18:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:44,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-12 02:18:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:44,736 INFO L225 Difference]: With dead ends: 1141 [2023-11-12 02:18:44,737 INFO L226 Difference]: Without dead ends: 727 [2023-11-12 02:18:44,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:44,750 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 93 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:44,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:18:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-11-12 02:18:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 725. [2023-11-12 02:18:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 1.5414364640883977) internal successors, (1116), 724 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1116 transitions. [2023-11-12 02:18:44,807 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1116 transitions. Word has length 50 [2023-11-12 02:18:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:44,808 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1116 transitions. [2023-11-12 02:18:44,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1116 transitions. [2023-11-12 02:18:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-12 02:18:44,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:44,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:44,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:44,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1540305433, now seen corresponding path program 1 times [2023-11-12 02:18:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:44,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881466707] [2023-11-12 02:18:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:45,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881466707] [2023-11-12 02:18:45,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881466707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:45,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:45,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:45,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746669662] [2023-11-12 02:18:45,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:45,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:45,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:45,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:45,050 INFO L87 Difference]: Start difference. First operand 725 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:45,229 INFO L93 Difference]: Finished difference Result 4215 states and 6561 transitions. [2023-11-12 02:18:45,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:45,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-12 02:18:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:45,255 INFO L225 Difference]: With dead ends: 4215 [2023-11-12 02:18:45,255 INFO L226 Difference]: Without dead ends: 3517 [2023-11-12 02:18:45,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:45,259 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 849 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:45,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1016 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:18:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2023-11-12 02:18:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 1421. [2023-11-12 02:18:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.5295774647887324) internal successors, (2172), 1420 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2172 transitions. [2023-11-12 02:18:45,325 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2172 transitions. Word has length 51 [2023-11-12 02:18:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:45,326 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2172 transitions. [2023-11-12 02:18:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2172 transitions. [2023-11-12 02:18:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 02:18:45,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:45,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:45,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:18:45,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:45,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:45,330 INFO L85 PathProgramCache]: Analyzing trace with hash 485371887, now seen corresponding path program 1 times [2023-11-12 02:18:45,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:45,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192166106] [2023-11-12 02:18:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:45,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:45,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:45,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192166106] [2023-11-12 02:18:45,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192166106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:45,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:45,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044998437] [2023-11-12 02:18:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:45,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:45,615 INFO L87 Difference]: Start difference. First operand 1421 states and 2172 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:45,758 INFO L93 Difference]: Finished difference Result 6181 states and 9408 transitions. [2023-11-12 02:18:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:45,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-12 02:18:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:45,786 INFO L225 Difference]: With dead ends: 6181 [2023-11-12 02:18:45,786 INFO L226 Difference]: Without dead ends: 4787 [2023-11-12 02:18:45,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:45,791 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 471 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:45,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 508 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:18:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2023-11-12 02:18:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4781. [2023-11-12 02:18:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4780 states have (on average 1.512133891213389) internal successors, (7228), 4780 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7228 transitions. [2023-11-12 02:18:45,938 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7228 transitions. Word has length 52 [2023-11-12 02:18:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:45,939 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7228 transitions. [2023-11-12 02:18:45,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7228 transitions. [2023-11-12 02:18:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 02:18:45,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:45,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:45,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:18:45,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:45,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash -381291208, now seen corresponding path program 1 times [2023-11-12 02:18:45,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:45,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248636166] [2023-11-12 02:18:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:45,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:46,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:46,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248636166] [2023-11-12 02:18:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248636166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598946818] [2023-11-12 02:18:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:46,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:46,137 INFO L87 Difference]: Start difference. First operand 4781 states and 7228 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:46,451 INFO L93 Difference]: Finished difference Result 14289 states and 21630 transitions. [2023-11-12 02:18:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-12 02:18:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:46,507 INFO L225 Difference]: With dead ends: 14289 [2023-11-12 02:18:46,507 INFO L226 Difference]: Without dead ends: 9535 [2023-11-12 02:18:46,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:46,518 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 616 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:46,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 171 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:18:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2023-11-12 02:18:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 9533. [2023-11-12 02:18:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9533 states, 9532 states have (on average 1.5035669324381031) internal successors, (14332), 9532 states have internal predecessors, (14332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9533 states to 9533 states and 14332 transitions. [2023-11-12 02:18:46,857 INFO L78 Accepts]: Start accepts. Automaton has 9533 states and 14332 transitions. Word has length 54 [2023-11-12 02:18:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:46,858 INFO L495 AbstractCegarLoop]: Abstraction has 9533 states and 14332 transitions. [2023-11-12 02:18:46,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 9533 states and 14332 transitions. [2023-11-12 02:18:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 02:18:46,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:46,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:18:46,861 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:46,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1195703203, now seen corresponding path program 1 times [2023-11-12 02:18:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890753272] [2023-11-12 02:18:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:47,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890753272] [2023-11-12 02:18:47,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890753272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:47,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:47,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531422480] [2023-11-12 02:18:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:47,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:47,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:47,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:47,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:47,138 INFO L87 Difference]: Start difference. First operand 9533 states and 14332 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:47,356 INFO L93 Difference]: Finished difference Result 19551 states and 29149 transitions. [2023-11-12 02:18:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:47,357 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-12 02:18:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:47,444 INFO L225 Difference]: With dead ends: 19551 [2023-11-12 02:18:47,444 INFO L226 Difference]: Without dead ends: 19549 [2023-11-12 02:18:47,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:47,453 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 226 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:47,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 705 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:18:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19549 states. [2023-11-12 02:18:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19549 to 10045. [2023-11-12 02:18:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10045 states, 10044 states have (on average 1.4778972520908005) internal successors, (14844), 10044 states have internal predecessors, (14844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10045 states to 10045 states and 14844 transitions. [2023-11-12 02:18:47,832 INFO L78 Accepts]: Start accepts. Automaton has 10045 states and 14844 transitions. Word has length 54 [2023-11-12 02:18:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:47,832 INFO L495 AbstractCegarLoop]: Abstraction has 10045 states and 14844 transitions. [2023-11-12 02:18:47,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 10045 states and 14844 transitions. [2023-11-12 02:18:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:18:47,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:47,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:47,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:18:47,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:47,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1598479419, now seen corresponding path program 1 times [2023-11-12 02:18:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022848377] [2023-11-12 02:18:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:47,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022848377] [2023-11-12 02:18:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022848377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:47,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:47,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126903657] [2023-11-12 02:18:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:47,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:47,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:47,960 INFO L87 Difference]: Start difference. First operand 10045 states and 14844 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:48,059 INFO L93 Difference]: Finished difference Result 24307 states and 35900 transitions. [2023-11-12 02:18:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-12 02:18:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:48,092 INFO L225 Difference]: With dead ends: 24307 [2023-11-12 02:18:48,092 INFO L226 Difference]: Without dead ends: 14289 [2023-11-12 02:18:48,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:48,106 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:48,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:18:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14289 states. [2023-11-12 02:18:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14289 to 14287. [2023-11-12 02:18:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14287 states, 14286 states have (on average 1.4678706425871482) internal successors, (20970), 14286 states have internal predecessors, (20970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14287 states to 14287 states and 20970 transitions. [2023-11-12 02:18:48,517 INFO L78 Accepts]: Start accepts. Automaton has 14287 states and 20970 transitions. Word has length 55 [2023-11-12 02:18:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:48,517 INFO L495 AbstractCegarLoop]: Abstraction has 14287 states and 20970 transitions. [2023-11-12 02:18:48,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 14287 states and 20970 transitions. [2023-11-12 02:18:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 02:18:48,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:48,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:48,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:18:48,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:48,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash -517305580, now seen corresponding path program 1 times [2023-11-12 02:18:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504503341] [2023-11-12 02:18:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:49,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:49,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504503341] [2023-11-12 02:18:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504503341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:18:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952956871] [2023-11-12 02:18:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:49,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:49,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:49,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:18:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:49,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:18:49,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:18:49,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:18:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:18:50,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952956871] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:18:50,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:18:50,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 17 [2023-11-12 02:18:50,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195466478] [2023-11-12 02:18:50,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:18:50,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:18:50,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:18:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:18:50,148 INFO L87 Difference]: Start difference. First operand 14287 states and 20970 transitions. Second operand has 17 states, 17 states have (on average 12.705882352941176) internal successors, (216), 17 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:00,363 INFO L93 Difference]: Finished difference Result 185863 states and 269384 transitions. [2023-11-12 02:19:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2023-11-12 02:19:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.705882352941176) internal successors, (216), 17 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-12 02:19:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:00,771 INFO L225 Difference]: With dead ends: 185863 [2023-11-12 02:19:00,771 INFO L226 Difference]: Without dead ends: 172717 [2023-11-12 02:19:00,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13958 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4825, Invalid=25975, Unknown=0, NotChecked=0, Total=30800 [2023-11-12 02:19:00,821 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 12841 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12841 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:00,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12841 Valid, 3873 Invalid, 3888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 3815 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-12 02:19:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172717 states. [2023-11-12 02:19:02,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172717 to 66569. [2023-11-12 02:19:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66569 states, 66568 states have (on average 1.448804230260786) internal successors, (96444), 66568 states have internal predecessors, (96444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66569 states to 66569 states and 96444 transitions. [2023-11-12 02:19:03,069 INFO L78 Accepts]: Start accepts. Automaton has 66569 states and 96444 transitions. Word has length 76 [2023-11-12 02:19:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:03,069 INFO L495 AbstractCegarLoop]: Abstraction has 66569 states and 96444 transitions. [2023-11-12 02:19:03,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.705882352941176) internal successors, (216), 17 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 66569 states and 96444 transitions. [2023-11-12 02:19:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:19:03,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:03,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:03,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:19:03,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f9c19d-c7c4-4603-b19e-a1b48b190b34/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:03,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:03,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1469487211, now seen corresponding path program 1 times [2023-11-12 02:19:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:03,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212751006] [2023-11-12 02:19:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:03,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212751006] [2023-11-12 02:19:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212751006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:03,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:03,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60763102] [2023-11-12 02:19:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:03,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:03,595 INFO L87 Difference]: Start difference. First operand 66569 states and 96444 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:04,239 INFO L93 Difference]: Finished difference Result 131856 states and 190454 transitions. [2023-11-12 02:19:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:04,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:19:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:04,392 INFO L225 Difference]: With dead ends: 131856 [2023-11-12 02:19:04,392 INFO L226 Difference]: Without dead ends: 92192 [2023-11-12 02:19:04,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:04,441 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 83 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:04,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 307 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92192 states. [2023-11-12 02:19:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92192 to 86606. [2023-11-12 02:19:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86606 states, 86605 states have (on average 1.4295710409329716) internal successors, (123808), 86605 states have internal predecessors, (123808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86606 states to 86606 states and 123808 transitions. [2023-11-12 02:19:06,264 INFO L78 Accepts]: Start accepts. Automaton has 86606 states and 123808 transitions. Word has length 77 [2023-11-12 02:19:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:06,264 INFO L495 AbstractCegarLoop]: Abstraction has 86606 states and 123808 transitions. [2023-11-12 02:19:06,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:06,265 INFO L276 IsEmpty]: Start isEmpty. Operand 86606 states and 123808 transitions. [2023-11-12 02:19:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:19:06,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:06,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:06,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:19:06,277 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:06,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1486533021, now seen corresponding path program 1 times [2023-11-12 02:19:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:06,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056862979] [2023-11-12 02:19:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:06,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056862979] [2023-11-12 02:19:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056862979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:06,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:06,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677569028] [2023-11-12 02:19:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:06,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:06,352 INFO L87 Difference]: Start difference. First operand 86606 states and 123808 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:07,176 INFO L93 Difference]: Finished difference Result 190990 states and 272629 transitions. [2023-11-12 02:19:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:19:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:07,333 INFO L225 Difference]: With dead ends: 190990 [2023-11-12 02:19:07,333 INFO L226 Difference]: Without dead ends: 113824 [2023-11-12 02:19:07,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:07,389 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 79 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:07,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113824 states. [2023-11-12 02:19:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113824 to 96182. [2023-11-12 02:19:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96182 states, 96181 states have (on average 1.4129713768831682) internal successors, (135901), 96181 states have internal predecessors, (135901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96182 states to 96182 states and 135901 transitions. [2023-11-12 02:19:08,944 INFO L78 Accepts]: Start accepts. Automaton has 96182 states and 135901 transitions. Word has length 77 [2023-11-12 02:19:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:08,945 INFO L495 AbstractCegarLoop]: Abstraction has 96182 states and 135901 transitions. [2023-11-12 02:19:08,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 96182 states and 135901 transitions. [2023-11-12 02:19:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:19:08,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:08,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:08,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:19:08,962 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:08,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash 561359425, now seen corresponding path program 1 times [2023-11-12 02:19:08,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:08,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154221519] [2023-11-12 02:19:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:08,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:19:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154221519] [2023-11-12 02:19:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154221519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:19:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963357022] [2023-11-12 02:19:09,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:09,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:09,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:09,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:09,101 INFO L87 Difference]: Start difference. First operand 96182 states and 135901 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:10,156 INFO L93 Difference]: Finished difference Result 216060 states and 306511 transitions. [2023-11-12 02:19:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:19:10,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:19:10,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:10,416 INFO L225 Difference]: With dead ends: 216060 [2023-11-12 02:19:10,416 INFO L226 Difference]: Without dead ends: 192182 [2023-11-12 02:19:10,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:19:10,894 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 739 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:10,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 940 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:19:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192182 states. [2023-11-12 02:19:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192182 to 119106. [2023-11-12 02:19:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119106 states, 119105 states have (on average 1.408244825993871) internal successors, (167729), 119105 states have internal predecessors, (167729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119106 states to 119106 states and 167729 transitions. [2023-11-12 02:19:13,392 INFO L78 Accepts]: Start accepts. Automaton has 119106 states and 167729 transitions. Word has length 77 [2023-11-12 02:19:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:13,393 INFO L495 AbstractCegarLoop]: Abstraction has 119106 states and 167729 transitions. [2023-11-12 02:19:13,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 119106 states and 167729 transitions. [2023-11-12 02:19:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:19:13,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:13,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:13,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:19:13,417 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:13,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash -618955254, now seen corresponding path program 1 times [2023-11-12 02:19:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:13,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464348395] [2023-11-12 02:19:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:13,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:13,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464348395] [2023-11-12 02:19:13,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464348395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:13,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232876306] [2023-11-12 02:19:13,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:13,490 INFO L87 Difference]: Start difference. First operand 119106 states and 167729 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:14,323 INFO L93 Difference]: Finished difference Result 323123 states and 453307 transitions. [2023-11-12 02:19:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:14,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:19:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:14,612 INFO L225 Difference]: With dead ends: 323123 [2023-11-12 02:19:14,612 INFO L226 Difference]: Without dead ends: 216177 [2023-11-12 02:19:15,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:15,270 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 79 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:15,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 284 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216177 states. [2023-11-12 02:19:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216177 to 216175. [2023-11-12 02:19:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216175 states, 216174 states have (on average 1.386346184092444) internal successors, (299692), 216174 states have internal predecessors, (299692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216175 states to 216175 states and 299692 transitions. [2023-11-12 02:19:18,476 INFO L78 Accepts]: Start accepts. Automaton has 216175 states and 299692 transitions. Word has length 77 [2023-11-12 02:19:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:18,476 INFO L495 AbstractCegarLoop]: Abstraction has 216175 states and 299692 transitions. [2023-11-12 02:19:18,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 216175 states and 299692 transitions. [2023-11-12 02:19:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:19:18,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:18,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:18,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:19:18,496 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:18,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1583866927, now seen corresponding path program 1 times [2023-11-12 02:19:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124483532] [2023-11-12 02:19:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:19:18,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:18,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124483532] [2023-11-12 02:19:18,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124483532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:18,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:18,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:19:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640920632] [2023-11-12 02:19:18,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:18,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:18,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:18,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:18,659 INFO L87 Difference]: Start difference. First operand 216175 states and 299692 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:20,720 INFO L93 Difference]: Finished difference Result 464251 states and 648123 transitions. [2023-11-12 02:19:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:19:20,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:19:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:22,100 INFO L225 Difference]: With dead ends: 464251 [2023-11-12 02:19:22,116 INFO L226 Difference]: Without dead ends: 395657 [2023-11-12 02:19:22,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:19:22,176 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 682 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:22,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 983 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:19:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395657 states.