./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.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_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/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_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/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_85066abf-afac-47b3-b580-a1f73a34850a/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 dbee9cda36a67f6e027f5c3662c75509e745ea501d7248f54e8e93f6e2072cf5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:42,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:42,761 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:24:42,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:42,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:42,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:42,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:42,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:42,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:42,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:42,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:42,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:42,797 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:42,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:42,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:42,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:42,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:42,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:42,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:42,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:42,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:42,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:42,803 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:42,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:42,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:42,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:42,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:42,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:42,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:42,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:42,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:42,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:42,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:42,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:42,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:42,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:42,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:42,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:42,808 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:42,808 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_85066abf-afac-47b3-b580-a1f73a34850a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbee9cda36a67f6e027f5c3662c75509e745ea501d7248f54e8e93f6e2072cf5 [2023-11-12 02:24:43,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:43,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:43,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:43,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:43,178 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:43,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-12 02:24:46,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:46,936 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:46,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-12 02:24:46,969 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/data/b3c10dd45/4d0106223b8b4412af7572f6b3468a95/FLAG3e2e12edb [2023-11-12 02:24:46,986 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/data/b3c10dd45/4d0106223b8b4412af7572f6b3468a95 [2023-11-12 02:24:46,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:46,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:46,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:46,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:47,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:47,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:46" (1/1) ... [2023-11-12 02:24:47,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d18eecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:47, skipping insertion in model container [2023-11-12 02:24:47,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:46" (1/1) ... [2023-11-12 02:24:47,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:47,683 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_85066abf-afac-47b3-b580-a1f73a34850a/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c[15547,15560] [2023-11-12 02:24:47,763 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_85066abf-afac-47b3-b580-a1f73a34850a/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c[22837,22850] [2023-11-12 02:24:48,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:48,796 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:48,846 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_85066abf-afac-47b3-b580-a1f73a34850a/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c[15547,15560] [2023-11-12 02:24:48,859 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_85066abf-afac-47b3-b580-a1f73a34850a/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c[22837,22850] [2023-11-12 02:24:49,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:49,570 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:49,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49 WrapperNode [2023-11-12 02:24:49,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:49,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:49,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:49,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:49,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:49,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,157 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5151 [2023-11-12 02:24:50,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:50,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:50,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:50,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:50,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:50,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:50,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:50,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:50,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (1/1) ... [2023-11-12 02:24:50,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:50,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:50,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:50,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85066abf-afac-47b3-b580-a1f73a34850a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:50,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:50,780 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:50,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:56,610 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:56,633 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:56,634 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:24:56,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:56 BoogieIcfgContainer [2023-11-12 02:24:56,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:56,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:56,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:56,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:56,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:46" (1/3) ... [2023-11-12 02:24:56,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d6864b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:56, skipping insertion in model container [2023-11-12 02:24:56,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:49" (2/3) ... [2023-11-12 02:24:56,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d6864b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:56, skipping insertion in model container [2023-11-12 02:24:56,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:56" (3/3) ... [2023-11-12 02:24:56,651 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-12 02:24:56,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:56,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:24:56,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:56,785 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;@17019587, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:56,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:24:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 916 states, 913 states have (on average 1.9036144578313252) internal successors, (1738), 915 states have internal predecessors, (1738), 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 02:24:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 02:24:56,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:56,809 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] [2023-11-12 02:24:56,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:56,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2028897015, now seen corresponding path program 1 times [2023-11-12 02:24:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154652540] [2023-11-12 02:24:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:56,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:57,150 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 02:24:57,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:57,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154652540] [2023-11-12 02:24:57,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154652540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:57,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:57,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247651113] [2023-11-12 02:24:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:57,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:24:57,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:24:57,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:24:57,203 INFO L87 Difference]: Start difference. First operand has 916 states, 913 states have (on average 1.9036144578313252) internal successors, (1738), 915 states have internal predecessors, (1738), 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 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 02:24:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:57,294 INFO L93 Difference]: Finished difference Result 1784 states and 3386 transitions. [2023-11-12 02:24:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:24:57,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2023-11-12 02:24:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:57,324 INFO L225 Difference]: With dead ends: 1784 [2023-11-12 02:24:57,324 INFO L226 Difference]: Without dead ends: 850 [2023-11-12 02:24:57,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:24:57,343 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:57,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:24:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-11-12 02:24:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2023-11-12 02:24:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.892688679245283) internal successors, (1605), 849 states have internal predecessors, (1605), 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 02:24:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1605 transitions. [2023-11-12 02:24:57,440 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1605 transitions. Word has length 26 [2023-11-12 02:24:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:57,440 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1605 transitions. [2023-11-12 02:24:57,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 02:24:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1605 transitions. [2023-11-12 02:24:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 02:24:57,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:57,443 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] [2023-11-12 02:24:57,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:57,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:57,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1448421831, now seen corresponding path program 1 times [2023-11-12 02:24:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041612033] [2023-11-12 02:24:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:57,745 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 02:24:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:57,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041612033] [2023-11-12 02:24:57,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041612033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:57,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:57,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:24:57,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698816713] [2023-11-12 02:24:57,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:57,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:57,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:57,756 INFO L87 Difference]: Start difference. First operand 850 states and 1605 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 02:24:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:57,961 INFO L93 Difference]: Finished difference Result 904 states and 1689 transitions. [2023-11-12 02:24:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:24:57,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2023-11-12 02:24:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:57,969 INFO L225 Difference]: With dead ends: 904 [2023-11-12 02:24:57,970 INFO L226 Difference]: Without dead ends: 850 [2023-11-12 02:24:57,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:24:57,972 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 2 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:57,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6367 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:24:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-11-12 02:24:58,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2023-11-12 02:24:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.8455188679245282) internal successors, (1565), 849 states have internal predecessors, (1565), 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 02:24:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1565 transitions. [2023-11-12 02:24:58,026 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1565 transitions. Word has length 26 [2023-11-12 02:24:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:58,026 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1565 transitions. [2023-11-12 02:24:58,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 02:24:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1565 transitions. [2023-11-12 02:24:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 02:24:58,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:58,038 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:58,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:58,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:58,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash -746115679, now seen corresponding path program 1 times [2023-11-12 02:24:58,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:58,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667932132] [2023-11-12 02:24:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:58,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:58,350 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 02:24:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667932132] [2023-11-12 02:24:58,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667932132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:58,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:58,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:24:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088146839] [2023-11-12 02:24:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:58,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:58,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:58,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:24:58,353 INFO L87 Difference]: Start difference. First operand 850 states and 1565 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 02:25:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:07,225 INFO L93 Difference]: Finished difference Result 3105 states and 5874 transitions. [2023-11-12 02:25:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:07,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2023-11-12 02:25:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:07,242 INFO L225 Difference]: With dead ends: 3105 [2023-11-12 02:25:07,243 INFO L226 Difference]: Without dead ends: 2352 [2023-11-12 02:25:07,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:07,246 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 2445 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:07,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 837 Invalid, 6399 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-12 02:25:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2023-11-12 02:25:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2352. [2023-11-12 02:25:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2350 states have (on average 1.5068085106382978) internal successors, (3541), 2351 states have internal predecessors, (3541), 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 02:25:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3541 transitions. [2023-11-12 02:25:07,330 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3541 transitions. Word has length 63 [2023-11-12 02:25:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:07,331 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3541 transitions. [2023-11-12 02:25:07,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 02:25:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3541 transitions. [2023-11-12 02:25:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:25:07,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:07,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:07,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:25:07,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:07,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash -295358701, now seen corresponding path program 1 times [2023-11-12 02:25:07,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:07,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928184740] [2023-11-12 02:25:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:07,652 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 02:25:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928184740] [2023-11-12 02:25:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928184740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:07,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:07,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:25:07,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876097940] [2023-11-12 02:25:07,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:07,657 INFO L87 Difference]: Start difference. First operand 2352 states and 3541 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 02:25:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:08,036 INFO L93 Difference]: Finished difference Result 2952 states and 4501 transitions. [2023-11-12 02:25:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:25:08,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 65 [2023-11-12 02:25:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:08,055 INFO L225 Difference]: With dead ends: 2952 [2023-11-12 02:25:08,055 INFO L226 Difference]: Without dead ends: 2902 [2023-11-12 02:25:08,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:25:08,069 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 9855 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9855 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:08,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9855 Valid, 3085 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:25:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2023-11-12 02:25:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2400. [2023-11-12 02:25:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2398 states have (on average 1.5087572977481234) internal successors, (3618), 2399 states have internal predecessors, (3618), 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 02:25:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3618 transitions. [2023-11-12 02:25:08,155 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3618 transitions. Word has length 65 [2023-11-12 02:25:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:08,158 INFO L495 AbstractCegarLoop]: Abstraction has 2400 states and 3618 transitions. [2023-11-12 02:25:08,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 02:25:08,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3618 transitions. [2023-11-12 02:25:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:25:08,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:08,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:08,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:25:08,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:08,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1787564125, now seen corresponding path program 1 times [2023-11-12 02:25:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327101469] [2023-11-12 02:25:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:08,294 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 02:25:08,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:08,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327101469] [2023-11-12 02:25:08,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327101469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:08,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:08,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:08,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129137284] [2023-11-12 02:25:08,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:08,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:08,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:08,297 INFO L87 Difference]: Start difference. First operand 2400 states and 3618 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:25:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:08,353 INFO L93 Difference]: Finished difference Result 2585 states and 3913 transitions. [2023-11-12 02:25:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:08,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2023-11-12 02:25:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:08,369 INFO L225 Difference]: With dead ends: 2585 [2023-11-12 02:25:08,369 INFO L226 Difference]: Without dead ends: 2487 [2023-11-12 02:25:08,370 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 02:25:08,371 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1492 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:08,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1634 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2023-11-12 02:25:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2483. [2023-11-12 02:25:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5106811769447803) internal successors, (3748), 2482 states have internal predecessors, (3748), 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 02:25:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3748 transitions. [2023-11-12 02:25:08,441 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3748 transitions. Word has length 67 [2023-11-12 02:25:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:08,442 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3748 transitions. [2023-11-12 02:25:08,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:25:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3748 transitions. [2023-11-12 02:25:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:25:08,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:08,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:08,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:25:08,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:08,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1721070613, now seen corresponding path program 1 times [2023-11-12 02:25:08,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:08,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956060078] [2023-11-12 02:25:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:08,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:08,814 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 02:25:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956060078] [2023-11-12 02:25:08,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956060078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:25:08,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191255167] [2023-11-12 02:25:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:08,819 INFO L87 Difference]: Start difference. First operand 2483 states and 3748 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 02:25:09,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:09,139 INFO L93 Difference]: Finished difference Result 2666 states and 4036 transitions. [2023-11-12 02:25:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:25:09,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 67 [2023-11-12 02:25:09,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:09,155 INFO L225 Difference]: With dead ends: 2666 [2023-11-12 02:25:09,155 INFO L226 Difference]: Without dead ends: 2485 [2023-11-12 02:25:09,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:25:09,157 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 4525 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4525 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:09,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4525 Valid, 1940 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:25:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2023-11-12 02:25:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2023-11-12 02:25:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5098750503829101) internal successors, (3746), 2482 states have internal predecessors, (3746), 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 02:25:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3746 transitions. [2023-11-12 02:25:09,229 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3746 transitions. Word has length 67 [2023-11-12 02:25:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:09,230 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3746 transitions. [2023-11-12 02:25:09,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 02:25:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3746 transitions. [2023-11-12 02:25:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 02:25:09,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:09,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:09,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:25:09,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:09,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2066662853, now seen corresponding path program 1 times [2023-11-12 02:25:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:09,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678285949] [2023-11-12 02:25:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,484 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 02:25:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:09,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678285949] [2023-11-12 02:25:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678285949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:09,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:09,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:25:09,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717905315] [2023-11-12 02:25:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:09,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:09,487 INFO L87 Difference]: Start difference. First operand 2483 states and 3746 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 02:25:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:09,624 INFO L93 Difference]: Finished difference Result 2631 states and 3982 transitions. [2023-11-12 02:25:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:09,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2023-11-12 02:25:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:09,640 INFO L225 Difference]: With dead ends: 2631 [2023-11-12 02:25:09,655 INFO L226 Difference]: Without dead ends: 2629 [2023-11-12 02:25:09,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:09,658 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 68 mSDsluCounter, 4803 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:09,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 6428 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2023-11-12 02:25:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2489. [2023-11-12 02:25:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2487 states have (on average 1.5082428628870124) internal successors, (3751), 2488 states have internal predecessors, (3751), 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 02:25:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3751 transitions. [2023-11-12 02:25:09,751 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3751 transitions. Word has length 68 [2023-11-12 02:25:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:09,752 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3751 transitions. [2023-11-12 02:25:09,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 02:25:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3751 transitions. [2023-11-12 02:25:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:25:09,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:09,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:25:09,754 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:09,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:09,755 INFO L85 PathProgramCache]: Analyzing trace with hash 279342091, now seen corresponding path program 1 times [2023-11-12 02:25:09,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:09,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589413141] [2023-11-12 02:25:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,823 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 02:25:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589413141] [2023-11-12 02:25:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589413141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:09,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769635362] [2023-11-12 02:25:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:09,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:09,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:09,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:09,827 INFO L87 Difference]: Start difference. First operand 2489 states and 3751 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:09,873 INFO L93 Difference]: Finished difference Result 2847 states and 4303 transitions. [2023-11-12 02:25:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:09,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 02:25:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:09,890 INFO L225 Difference]: With dead ends: 2847 [2023-11-12 02:25:09,890 INFO L226 Difference]: Without dead ends: 2660 [2023-11-12 02:25:09,891 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 02:25:09,893 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 1505 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:09,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1701 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2023-11-12 02:25:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2658. [2023-11-12 02:25:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2656 states have (on average 1.5090361445783131) internal successors, (4008), 2657 states have internal predecessors, (4008), 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 02:25:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 4008 transitions. [2023-11-12 02:25:09,974 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 4008 transitions. Word has length 69 [2023-11-12 02:25:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:09,974 INFO L495 AbstractCegarLoop]: Abstraction has 2658 states and 4008 transitions. [2023-11-12 02:25:09,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 4008 transitions. [2023-11-12 02:25:09,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:25:09,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:09,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:09,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:25:09,980 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:09,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1517604107, now seen corresponding path program 1 times [2023-11-12 02:25:09,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:09,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948384133] [2023-11-12 02:25:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:10,048 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 02:25:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:10,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948384133] [2023-11-12 02:25:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948384133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:10,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:10,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758012994] [2023-11-12 02:25:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:10,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:10,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:10,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:10,051 INFO L87 Difference]: Start difference. First operand 2658 states and 4008 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:10,110 INFO L93 Difference]: Finished difference Result 3338 states and 5046 transitions. [2023-11-12 02:25:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:10,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 02:25:10,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:10,129 INFO L225 Difference]: With dead ends: 3338 [2023-11-12 02:25:10,129 INFO L226 Difference]: Without dead ends: 2982 [2023-11-12 02:25:10,131 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 02:25:10,131 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1503 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:10,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1703 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2023-11-12 02:25:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2980. [2023-11-12 02:25:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 1.5077233042310276) internal successors, (4490), 2979 states have internal predecessors, (4490), 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 02:25:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4490 transitions. [2023-11-12 02:25:10,224 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4490 transitions. Word has length 69 [2023-11-12 02:25:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:10,224 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4490 transitions. [2023-11-12 02:25:10,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4490 transitions. [2023-11-12 02:25:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:25:10,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:10,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:10,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:25:10,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:10,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash -697864693, now seen corresponding path program 1 times [2023-11-12 02:25:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:10,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849474909] [2023-11-12 02:25:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:10,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:10,292 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 02:25:10,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:10,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849474909] [2023-11-12 02:25:10,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849474909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:10,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:10,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:10,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680766627] [2023-11-12 02:25:10,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:10,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:10,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:10,295 INFO L87 Difference]: Start difference. First operand 2980 states and 4490 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:10,372 INFO L93 Difference]: Finished difference Result 4272 states and 6436 transitions. [2023-11-12 02:25:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 02:25:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:10,393 INFO L225 Difference]: With dead ends: 4272 [2023-11-12 02:25:10,394 INFO L226 Difference]: Without dead ends: 3594 [2023-11-12 02:25:10,396 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 02:25:10,397 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1501 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:10,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1705 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2023-11-12 02:25:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3592. [2023-11-12 02:25:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3590 states have (on average 1.501392757660167) internal successors, (5390), 3591 states have internal predecessors, (5390), 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 02:25:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5390 transitions. [2023-11-12 02:25:10,519 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5390 transitions. Word has length 69 [2023-11-12 02:25:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:10,520 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 5390 transitions. [2023-11-12 02:25:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5390 transitions. [2023-11-12 02:25:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:25:10,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:10,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:25:10,522 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:10,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1083068171, now seen corresponding path program 1 times [2023-11-12 02:25:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689785555] [2023-11-12 02:25:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:10,586 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 02:25:10,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:10,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689785555] [2023-11-12 02:25:10,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689785555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:10,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:10,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:10,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473206624] [2023-11-12 02:25:10,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:10,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:10,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:10,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:10,590 INFO L87 Difference]: Start difference. First operand 3592 states and 5390 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:10,702 INFO L93 Difference]: Finished difference Result 6044 states and 9024 transitions. [2023-11-12 02:25:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:10,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 02:25:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:10,720 INFO L225 Difference]: With dead ends: 6044 [2023-11-12 02:25:10,720 INFO L226 Difference]: Without dead ends: 4754 [2023-11-12 02:25:10,723 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 02:25:10,724 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1499 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:10,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2023-11-12 02:25:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4752. [2023-11-12 02:25:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4750 states have (on average 1.4867368421052631) internal successors, (7062), 4751 states have internal predecessors, (7062), 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 02:25:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7062 transitions. [2023-11-12 02:25:10,960 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7062 transitions. Word has length 69 [2023-11-12 02:25:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:10,961 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 7062 transitions. [2023-11-12 02:25:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7062 transitions. [2023-11-12 02:25:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:25:10,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:10,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:10,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:25:10,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:10,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash 15485707, now seen corresponding path program 1 times [2023-11-12 02:25:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192675201] [2023-11-12 02:25:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:10,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:11,029 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 02:25:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:11,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192675201] [2023-11-12 02:25:11,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192675201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:11,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:11,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003567481] [2023-11-12 02:25:11,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:11,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:11,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:11,032 INFO L87 Difference]: Start difference. First operand 4752 states and 7062 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:11,216 INFO L93 Difference]: Finished difference Result 9396 states and 13816 transitions. [2023-11-12 02:25:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:11,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 02:25:11,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:11,240 INFO L225 Difference]: With dead ends: 9396 [2023-11-12 02:25:11,241 INFO L226 Difference]: Without dead ends: 6946 [2023-11-12 02:25:11,245 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 02:25:11,246 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 1507 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:11,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2023-11-12 02:25:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6944. [2023-11-12 02:25:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6942 states have (on average 1.4621146643618554) internal successors, (10150), 6943 states have internal predecessors, (10150), 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 02:25:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 10150 transitions. [2023-11-12 02:25:11,530 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 10150 transitions. Word has length 69 [2023-11-12 02:25:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:11,530 INFO L495 AbstractCegarLoop]: Abstraction has 6944 states and 10150 transitions. [2023-11-12 02:25:11,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 10150 transitions. [2023-11-12 02:25:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 02:25:11,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:11,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:25:11,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:11,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2036636858, now seen corresponding path program 1 times [2023-11-12 02:25:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:11,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635773746] [2023-11-12 02:25:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:11,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:11,617 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 02:25:11,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635773746] [2023-11-12 02:25:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635773746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:11,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:11,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971368995] [2023-11-12 02:25:11,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:11,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:11,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:11,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:11,621 INFO L87 Difference]: Start difference. First operand 6944 states and 10150 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 02:25:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:11,874 INFO L93 Difference]: Finished difference Result 11815 states and 17260 transitions. [2023-11-12 02:25:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2023-11-12 02:25:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:11,897 INFO L225 Difference]: With dead ends: 11815 [2023-11-12 02:25:11,898 INFO L226 Difference]: Without dead ends: 9188 [2023-11-12 02:25:11,903 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 02:25:11,904 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1506 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:11,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2023-11-12 02:25:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 9186. [2023-11-12 02:25:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9184 states have (on average 1.4503484320557491) internal successors, (13320), 9185 states have internal predecessors, (13320), 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 02:25:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 13320 transitions. [2023-11-12 02:25:12,323 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 13320 transitions. Word has length 71 [2023-11-12 02:25:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:12,323 INFO L495 AbstractCegarLoop]: Abstraction has 9186 states and 13320 transitions. [2023-11-12 02:25:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 02:25:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 13320 transitions. [2023-11-12 02:25:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:25:12,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:12,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:12,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:25:12,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:12,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1790597010, now seen corresponding path program 1 times [2023-11-12 02:25:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:12,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777271723] [2023-11-12 02:25:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:12,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:25:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777271723] [2023-11-12 02:25:12,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777271723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:12,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:12,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:25:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177073722] [2023-11-12 02:25:12,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:12,558 INFO L87 Difference]: Start difference. First operand 9186 states and 13320 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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 02:25:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:14,238 INFO L93 Difference]: Finished difference Result 51920 states and 74447 transitions. [2023-11-12 02:25:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:25:14,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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 90 [2023-11-12 02:25:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:14,347 INFO L225 Difference]: With dead ends: 51920 [2023-11-12 02:25:14,348 INFO L226 Difference]: Without dead ends: 45038 [2023-11-12 02:25:14,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:14,368 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 8109 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8109 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:14,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8109 Valid, 3868 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:25:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45038 states. [2023-11-12 02:25:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45038 to 16066. [2023-11-12 02:25:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16066 states, 16064 states have (on average 1.4367529880478087) internal successors, (23080), 16065 states have internal predecessors, (23080), 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 02:25:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16066 states to 16066 states and 23080 transitions. [2023-11-12 02:25:15,413 INFO L78 Accepts]: Start accepts. Automaton has 16066 states and 23080 transitions. Word has length 90 [2023-11-12 02:25:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:15,413 INFO L495 AbstractCegarLoop]: Abstraction has 16066 states and 23080 transitions. [2023-11-12 02:25:15,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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 02:25:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 16066 states and 23080 transitions. [2023-11-12 02:25:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:25:15,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:15,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:15,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:25:15,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:15,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -552334994, now seen corresponding path program 1 times [2023-11-12 02:25:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901101302] [2023-11-12 02:25:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:25:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901101302] [2023-11-12 02:25:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901101302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:15,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:25:15,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554594516] [2023-11-12 02:25:15,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:15,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:15,668 INFO L87 Difference]: Start difference. First operand 16066 states and 23080 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 02:25:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:17,674 INFO L93 Difference]: Finished difference Result 58800 states and 84207 transitions. [2023-11-12 02:25:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:25:17,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 90 [2023-11-12 02:25:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:17,792 INFO L225 Difference]: With dead ends: 58800 [2023-11-12 02:25:17,793 INFO L226 Difference]: Without dead ends: 51918 [2023-11-12 02:25:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:17,812 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 8154 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8154 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:17,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8154 Valid, 3817 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:25:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51918 states. [2023-11-12 02:25:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51918 to 26402. [2023-11-12 02:25:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26402 states, 26400 states have (on average 1.4257575757575758) internal successors, (37640), 26401 states have internal predecessors, (37640), 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 02:25:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26402 states to 26402 states and 37640 transitions. [2023-11-12 02:25:19,423 INFO L78 Accepts]: Start accepts. Automaton has 26402 states and 37640 transitions. Word has length 90 [2023-11-12 02:25:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:19,424 INFO L495 AbstractCegarLoop]: Abstraction has 26402 states and 37640 transitions. [2023-11-12 02:25:19,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 02:25:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26402 states and 37640 transitions. [2023-11-12 02:25:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:25:19,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:19,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:19,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:25:19,429 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:19,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1527163502, now seen corresponding path program 1 times [2023-11-12 02:25:19,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:19,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109267119] [2023-11-12 02:25:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:25:19,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:19,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109267119] [2023-11-12 02:25:19,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109267119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:19,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:19,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:25:19,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652678135] [2023-11-12 02:25:19,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:19,726 INFO L87 Difference]: Start difference. First operand 26402 states and 37640 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 02:25:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:21,872 INFO L93 Difference]: Finished difference Result 65680 states and 93967 transitions. [2023-11-12 02:25:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:25:21,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 90 [2023-11-12 02:25:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:22,003 INFO L225 Difference]: With dead ends: 65680 [2023-11-12 02:25:22,004 INFO L226 Difference]: Without dead ends: 58798 [2023-11-12 02:25:22,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:22,023 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 8204 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8204 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:22,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8204 Valid, 3818 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:25:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58798 states. [2023-11-12 02:25:23,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58798 to 33282. [2023-11-12 02:25:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33282 states, 33280 states have (on average 1.4242788461538463) internal successors, (47400), 33281 states have internal predecessors, (47400), 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 02:25:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33282 states to 33282 states and 47400 transitions. [2023-11-12 02:25:23,417 INFO L78 Accepts]: Start accepts. Automaton has 33282 states and 47400 transitions. Word has length 90 [2023-11-12 02:25:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:23,418 INFO L495 AbstractCegarLoop]: Abstraction has 33282 states and 47400 transitions. [2023-11-12 02:25:23,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 02:25:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 33282 states and 47400 transitions. [2023-11-12 02:25:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:25:23,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:23,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:23,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:25:23,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:23,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash -986870930, now seen corresponding path program 1 times [2023-11-12 02:25:23,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:23,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378646209] [2023-11-12 02:25:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:23,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:25:23,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:23,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378646209] [2023-11-12 02:25:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378646209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:23,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:23,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:25:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639418481] [2023-11-12 02:25:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:23,694 INFO L87 Difference]: Start difference. First operand 33282 states and 47400 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 02:25:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:26,345 INFO L93 Difference]: Finished difference Result 72560 states and 103727 transitions. [2023-11-12 02:25:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:25:26,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 90 [2023-11-12 02:25:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:26,476 INFO L225 Difference]: With dead ends: 72560 [2023-11-12 02:25:26,476 INFO L226 Difference]: Without dead ends: 65678 [2023-11-12 02:25:26,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:25:26,502 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 8108 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8108 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:26,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8108 Valid, 3911 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:25:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65678 states. [2023-11-12 02:25:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65678 to 40162. [2023-11-12 02:25:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40162 states, 40160 states have (on average 1.4233067729083666) internal successors, (57160), 40161 states have internal predecessors, (57160), 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 02:25:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40162 states to 40162 states and 57160 transitions. [2023-11-12 02:25:27,971 INFO L78 Accepts]: Start accepts. Automaton has 40162 states and 57160 transitions. Word has length 90 [2023-11-12 02:25:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:27,971 INFO L495 AbstractCegarLoop]: Abstraction has 40162 states and 57160 transitions. [2023-11-12 02:25:27,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 02:25:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 40162 states and 57160 transitions. [2023-11-12 02:25:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:25:27,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:27,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:27,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:25:27,977 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:27,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2054453394, now seen corresponding path program 1 times [2023-11-12 02:25:27,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:27,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699103625] [2023-11-12 02:25:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:27,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:25:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:28,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699103625] [2023-11-12 02:25:28,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699103625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:28,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:28,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:25:28,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388207790] [2023-11-12 02:25:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:28,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:28,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:28,232 INFO L87 Difference]: Start difference. First operand 40162 states and 57160 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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)