./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 4d62395951f99c0a3c43b690318a4d5480f589d72fceef9ee8ca741a4c7ef736 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:54:16,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:54:16,774 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:54:16,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:54:16,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:54:16,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:54:16,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:54:16,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:54:16,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:54:16,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:54:16,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:54:16,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:54:16,812 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:54:16,813 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:54:16,813 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:54:16,814 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:54:16,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:54:16,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:54:16,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:54:16,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:54:16,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:54:16,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:54:16,817 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:54:16,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:54:16,818 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:54:16,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:54:16,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:54:16,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:54:16,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:16,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:54:16,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:54:16,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:54:16,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:54:16,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:54:16,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:54:16,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:54:16,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:54:16,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:54:16,823 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:54:16,823 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_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d62395951f99c0a3c43b690318a4d5480f589d72fceef9ee8ca741a4c7ef736 [2023-11-06 22:54:17,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:54:17,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:54:17,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:54:17,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:54:17,155 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:54:17,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-11-06 22:54:20,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:54:20,947 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:54:20,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-11-06 22:54:21,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/data/a67fd5244/2bc8bd6cda3b4d83835de4293b82e311/FLAGcf4bd6c39 [2023-11-06 22:54:21,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/data/a67fd5244/2bc8bd6cda3b4d83835de4293b82e311 [2023-11-06 22:54:21,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:54:21,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:54:21,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:21,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:54:21,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:54:21,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:21" (1/1) ... [2023-11-06 22:54:21,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78754ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:21, skipping insertion in model container [2023-11-06 22:54:21,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:21" (1/1) ... [2023-11-06 22:54:21,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:54:21,748 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_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c[26888,26901] [2023-11-06 22:54:21,824 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_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c[27730,27743] [2023-11-06 22:54:23,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:23,058 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:54:23,153 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_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c[26888,26901] [2023-11-06 22:54:23,156 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_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c[27730,27743] [2023-11-06 22:54:23,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:23,845 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:54:23,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23 WrapperNode [2023-11-06 22:54:23,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:23,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:23,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:54:23,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:54:23,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:23,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,409 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5282 [2023-11-06 22:54:24,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:24,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:54:24,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:54:24,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:54:24,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:24,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:54:24,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:54:24,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:54:24,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:54:24,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (1/1) ... [2023-11-06 22:54:25,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:25,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:54:25,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:54:25,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4d4d364-fbc5-4e2c-ab21-dc5efc76dfae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:54:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:54:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:54:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:54:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:54:25,309 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:54:25,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:54:31,603 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:54:31,626 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:54:31,626 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:54:31,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:31 BoogieIcfgContainer [2023-11-06 22:54:31,630 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:54:31,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:54:31,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:54:31,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:54:31,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:54:21" (1/3) ... [2023-11-06 22:54:31,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59537cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:31, skipping insertion in model container [2023-11-06 22:54:31,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:23" (2/3) ... [2023-11-06 22:54:31,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59537cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:31, skipping insertion in model container [2023-11-06 22:54:31,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:31" (3/3) ... [2023-11-06 22:54:31,639 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-11-06 22:54:31,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:54:31,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:54:31,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:54:31,775 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=LoopsAndPotentialCycles, 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;@6e6d2de9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:54:31,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:54:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 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) [2023-11-06 22:54:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:54:31,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:31,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:31,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:31,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1869546765, now seen corresponding path program 1 times [2023-11-06 22:54:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:31,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759464367] [2023-11-06 22:54:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:31,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759464367] [2023-11-06 22:54:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759464367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:32,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:32,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:54:32,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284704903] [2023-11-06 22:54:32,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:32,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:32,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:32,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:32,261 INFO L87 Difference]: Start difference. First operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-06 22:54:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:37,529 INFO L93 Difference]: Finished difference Result 2584 states and 4970 transitions. [2023-11-06 22:54:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:37,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-06 22:54:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:37,567 INFO L225 Difference]: With dead ends: 2584 [2023-11-06 22:54:37,567 INFO L226 Difference]: Without dead ends: 1634 [2023-11-06 22:54:37,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:37,579 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1119 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:54:37,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 386 Invalid, 3208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:54:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-06 22:54:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1634. [2023-11-06 22:54:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8419117647058822) internal successors, (3006), 1633 states have internal predecessors, (3006), 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) [2023-11-06 22:54:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 3006 transitions. [2023-11-06 22:54:37,731 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 3006 transitions. Word has length 7 [2023-11-06 22:54:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:37,732 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 3006 transitions. [2023-11-06 22:54:37,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-06 22:54:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 3006 transitions. [2023-11-06 22:54:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:54:37,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:37,736 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] [2023-11-06 22:54:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:54:37,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:37,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2101780621, now seen corresponding path program 1 times [2023-11-06 22:54:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:37,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655936469] [2023-11-06 22:54:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:37,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:38,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:38,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655936469] [2023-11-06 22:54:38,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655936469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:38,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:38,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:54:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547798112] [2023-11-06 22:54:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:38,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:54:38,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:54:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:54:38,217 INFO L87 Difference]: Start difference. First operand 1634 states and 3006 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2023-11-06 22:54:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:38,395 INFO L93 Difference]: Finished difference Result 1700 states and 3110 transitions. [2023-11-06 22:54:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:54:38,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2023-11-06 22:54:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:38,408 INFO L225 Difference]: With dead ends: 1700 [2023-11-06 22:54:38,408 INFO L226 Difference]: Without dead ends: 1634 [2023-11-06 22:54:38,409 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 [2023-11-06 22:54:38,411 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 2 mSDsluCounter, 4929 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6594 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:54:38,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6594 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:54:38,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-06 22:54:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1634. [2023-11-06 22:54:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8045343137254901) internal successors, (2945), 1633 states have internal predecessors, (2945), 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) [2023-11-06 22:54:38,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2945 transitions. [2023-11-06 22:54:38,465 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2945 transitions. Word has length 30 [2023-11-06 22:54:38,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:38,466 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2945 transitions. [2023-11-06 22:54:38,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2023-11-06 22:54:38,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2945 transitions. [2023-11-06 22:54:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:54:38,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:38,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:38,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:54:38,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:38,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash 808184770, now seen corresponding path program 1 times [2023-11-06 22:54:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:38,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529565355] [2023-11-06 22:54:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:38,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:39,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529565355] [2023-11-06 22:54:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529565355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:39,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:39,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085089573] [2023-11-06 22:54:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:54:39,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:54:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:54:39,109 INFO L87 Difference]: Start difference. First operand 1634 states and 2945 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-06 22:54:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:47,915 INFO L93 Difference]: Finished difference Result 5391 states and 9835 transitions. [2023-11-06 22:54:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:54:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-06 22:54:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:47,939 INFO L225 Difference]: With dead ends: 5391 [2023-11-06 22:54:47,939 INFO L226 Difference]: Without dead ends: 3887 [2023-11-06 22:54:47,942 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 [2023-11-06 22:54:47,943 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 2493 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2493 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:54:47,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2493 Valid, 881 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-06 22:54:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2023-11-06 22:54:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3887. [2023-11-06 22:54:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 3885 states have (on average 1.4244530244530245) internal successors, (5534), 3886 states have internal predecessors, (5534), 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) [2023-11-06 22:54:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 5534 transitions. [2023-11-06 22:54:48,046 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 5534 transitions. Word has length 76 [2023-11-06 22:54:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:48,047 INFO L495 AbstractCegarLoop]: Abstraction has 3887 states and 5534 transitions. [2023-11-06 22:54:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-06 22:54:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 5534 transitions. [2023-11-06 22:54:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:54:48,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:48,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:54:48,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:48,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -678425955, now seen corresponding path program 1 times [2023-11-06 22:54:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298739147] [2023-11-06 22:54:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:48,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:48,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298739147] [2023-11-06 22:54:48,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298739147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:48,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:48,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323749675] [2023-11-06 22:54:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:48,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:48,195 INFO L87 Difference]: Start difference. First operand 3887 states and 5534 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-06 22:54:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:52,286 INFO L93 Difference]: Finished difference Result 8395 states and 12917 transitions. [2023-11-06 22:54:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-06 22:54:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:52,317 INFO L225 Difference]: With dead ends: 8395 [2023-11-06 22:54:52,317 INFO L226 Difference]: Without dead ends: 5389 [2023-11-06 22:54:52,322 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 [2023-11-06 22:54:52,324 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 784 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:54:52,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1312 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:54:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2023-11-06 22:54:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 5389. [2023-11-06 22:54:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 5387 states have (on average 1.4687209949879338) internal successors, (7912), 5388 states have internal predecessors, (7912), 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) [2023-11-06 22:54:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 7912 transitions. [2023-11-06 22:54:52,457 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 7912 transitions. Word has length 78 [2023-11-06 22:54:52,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:52,458 INFO L495 AbstractCegarLoop]: Abstraction has 5389 states and 7912 transitions. [2023-11-06 22:54:52,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-06 22:54:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 7912 transitions. [2023-11-06 22:54:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:54:52,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:52,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:54:52,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:52,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1651582301, now seen corresponding path program 1 times [2023-11-06 22:54:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:52,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607386633] [2023-11-06 22:54:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607386633] [2023-11-06 22:54:52,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607386633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:52,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:52,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:54:52,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836845865] [2023-11-06 22:54:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:52,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:54:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:54:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:54:52,788 INFO L87 Difference]: Start difference. First operand 5389 states and 7912 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 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) [2023-11-06 22:54:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:53,541 INFO L93 Difference]: Finished difference Result 6381 states and 9512 transitions. [2023-11-06 22:54:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:54:53,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 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 [2023-11-06 22:54:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:53,576 INFO L225 Difference]: With dead ends: 6381 [2023-11-06 22:54:53,576 INFO L226 Difference]: Without dead ends: 6319 [2023-11-06 22:54:53,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:54:53,580 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 13578 mSDsluCounter, 3975 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13578 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:54:53,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13578 Valid, 5575 Invalid, 314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:54:53,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2023-11-06 22:54:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 5449. [2023-11-06 22:54:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5447 states have (on average 1.4703506517348999) internal successors, (8009), 5448 states have internal predecessors, (8009), 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) [2023-11-06 22:54:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 8009 transitions. [2023-11-06 22:54:53,856 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 8009 transitions. Word has length 90 [2023-11-06 22:54:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:53,857 INFO L495 AbstractCegarLoop]: Abstraction has 5449 states and 8009 transitions. [2023-11-06 22:54:53,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 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) [2023-11-06 22:54:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 8009 transitions. [2023-11-06 22:54:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 22:54:53,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:53,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:53,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:54:53,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:53,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:53,860 INFO L85 PathProgramCache]: Analyzing trace with hash 551619955, now seen corresponding path program 1 times [2023-11-06 22:54:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147800388] [2023-11-06 22:54:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:54,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147800388] [2023-11-06 22:54:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147800388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:54,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:54,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:54,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948324749] [2023-11-06 22:54:54,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:54,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:54,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:54,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:54,039 INFO L87 Difference]: Start difference. First operand 5449 states and 8009 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-06 22:54:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:54,148 INFO L93 Difference]: Finished difference Result 5682 states and 8384 transitions. [2023-11-06 22:54:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:54,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2023-11-06 22:54:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:54,196 INFO L225 Difference]: With dead ends: 5682 [2023-11-06 22:54:54,196 INFO L226 Difference]: Without dead ends: 5560 [2023-11-06 22:54:54,199 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 [2023-11-06 22:54:54,202 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1508 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1695 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 [2023-11-06 22:54:54,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1695 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:54:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2023-11-06 22:54:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5556. [2023-11-06 22:54:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 5554 states have (on average 1.4726323370543752) internal successors, (8179), 5555 states have internal predecessors, (8179), 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) [2023-11-06 22:54:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 8179 transitions. [2023-11-06 22:54:54,383 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 8179 transitions. Word has length 92 [2023-11-06 22:54:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:54,384 INFO L495 AbstractCegarLoop]: Abstraction has 5556 states and 8179 transitions. [2023-11-06 22:54:54,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-06 22:54:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 8179 transitions. [2023-11-06 22:54:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 22:54:54,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:54,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:54,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:54:54,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:54,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash 618113467, now seen corresponding path program 1 times [2023-11-06 22:54:54,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:54,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907846418] [2023-11-06 22:54:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:55,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:55,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907846418] [2023-11-06 22:54:55,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907846418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:55,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:55,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:54:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312355830] [2023-11-06 22:54:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:54:55,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:54:55,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:54:55,077 INFO L87 Difference]: Start difference. First operand 5556 states and 8179 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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) [2023-11-06 22:54:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:55,736 INFO L93 Difference]: Finished difference Result 5787 states and 8547 transitions. [2023-11-06 22:54:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:54:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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 92 [2023-11-06 22:54:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:55,749 INFO L225 Difference]: With dead ends: 5787 [2023-11-06 22:54:55,749 INFO L226 Difference]: Without dead ends: 5558 [2023-11-06 22:54:55,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:54:55,755 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 12156 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12156 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:54:55,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12156 Valid, 2278 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:54:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2023-11-06 22:54:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5556. [2023-11-06 22:54:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 5554 states have (on average 1.4722722362261433) internal successors, (8177), 5555 states have internal predecessors, (8177), 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) [2023-11-06 22:54:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 8177 transitions. [2023-11-06 22:54:56,018 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 8177 transitions. Word has length 92 [2023-11-06 22:54:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:56,018 INFO L495 AbstractCegarLoop]: Abstraction has 5556 states and 8177 transitions. [2023-11-06 22:54:56,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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) [2023-11-06 22:54:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 8177 transitions. [2023-11-06 22:54:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 22:54:56,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:56,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:54:56,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:56,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1566925479, now seen corresponding path program 1 times [2023-11-06 22:54:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:56,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874854241] [2023-11-06 22:54:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:56,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:56,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874854241] [2023-11-06 22:54:56,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874854241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:56,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:56,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:54:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760858428] [2023-11-06 22:54:56,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:56,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:54:56,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:54:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:54:56,362 INFO L87 Difference]: Start difference. First operand 5556 states and 8177 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2023-11-06 22:54:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:56,550 INFO L93 Difference]: Finished difference Result 5752 states and 8493 transitions. [2023-11-06 22:54:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:54:56,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 93 [2023-11-06 22:54:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:56,562 INFO L225 Difference]: With dead ends: 5752 [2023-11-06 22:54:56,562 INFO L226 Difference]: Without dead ends: 5750 [2023-11-06 22:54:56,564 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 [2023-11-06 22:54:56,566 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 88 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 6652 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 [2023-11-06 22:54:56,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 6652 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:54:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2023-11-06 22:54:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 5562. [2023-11-06 22:54:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5560 states have (on average 1.4715827338129497) internal successors, (8182), 5561 states have internal predecessors, (8182), 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) [2023-11-06 22:54:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 8182 transitions. [2023-11-06 22:54:56,716 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 8182 transitions. Word has length 93 [2023-11-06 22:54:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:56,717 INFO L495 AbstractCegarLoop]: Abstraction has 5562 states and 8182 transitions. [2023-11-06 22:54:56,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2023-11-06 22:54:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 8182 transitions. [2023-11-06 22:54:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:54:56,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:56,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:54:56,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:56,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash -401487589, now seen corresponding path program 1 times [2023-11-06 22:54:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248499407] [2023-11-06 22:54:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:56,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248499407] [2023-11-06 22:54:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248499407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:56,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:56,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835503168] [2023-11-06 22:54:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:56,826 INFO L87 Difference]: Start difference. First operand 5562 states and 8182 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:56,984 INFO L93 Difference]: Finished difference Result 6016 states and 8894 transitions. [2023-11-06 22:54:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:54:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:56,998 INFO L225 Difference]: With dead ends: 6016 [2023-11-06 22:54:56,999 INFO L226 Difference]: Without dead ends: 5781 [2023-11-06 22:54:57,001 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 [2023-11-06 22:54:57,004 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 1527 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1788 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 [2023-11-06 22:54:57,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:54:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2023-11-06 22:54:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 5779. [2023-11-06 22:54:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5779 states, 5777 states have (on average 1.474640817033062) internal successors, (8519), 5778 states have internal predecessors, (8519), 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) [2023-11-06 22:54:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5779 states to 5779 states and 8519 transitions. [2023-11-06 22:54:57,206 INFO L78 Accepts]: Start accepts. Automaton has 5779 states and 8519 transitions. Word has length 94 [2023-11-06 22:54:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:57,206 INFO L495 AbstractCegarLoop]: Abstraction has 5779 states and 8519 transitions. [2023-11-06 22:54:57,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5779 states and 8519 transitions. [2023-11-06 22:54:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:54:57,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:57,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:54:57,209 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:57,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1540581915, now seen corresponding path program 1 times [2023-11-06 22:54:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:57,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697128401] [2023-11-06 22:54:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:57,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697128401] [2023-11-06 22:54:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697128401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:57,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:57,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477998652] [2023-11-06 22:54:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:57,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:57,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:57,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:57,321 INFO L87 Difference]: Start difference. First operand 5779 states and 8519 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:57,684 INFO L93 Difference]: Finished difference Result 6651 states and 9877 transitions. [2023-11-06 22:54:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:54:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:57,700 INFO L225 Difference]: With dead ends: 6651 [2023-11-06 22:54:57,700 INFO L226 Difference]: Without dead ends: 6199 [2023-11-06 22:54:57,703 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 [2023-11-06 22:54:57,704 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1525 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1790 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 [2023-11-06 22:54:57,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:54:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6199 states. [2023-11-06 22:54:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6199 to 6197. [2023-11-06 22:54:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6197 states, 6195 states have (on average 1.478773204196933) internal successors, (9161), 6196 states have internal predecessors, (9161), 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) [2023-11-06 22:54:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 9161 transitions. [2023-11-06 22:54:58,104 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 9161 transitions. Word has length 94 [2023-11-06 22:54:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:58,105 INFO L495 AbstractCegarLoop]: Abstraction has 6197 states and 9161 transitions. [2023-11-06 22:54:58,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 9161 transitions. [2023-11-06 22:54:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:54:58,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:58,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:54:58,108 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:58,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1967352859, now seen corresponding path program 1 times [2023-11-06 22:54:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:58,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382710941] [2023-11-06 22:54:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:58,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382710941] [2023-11-06 22:54:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382710941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:58,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14032202] [2023-11-06 22:54:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:58,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:58,208 INFO L87 Difference]: Start difference. First operand 6197 states and 9161 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:54:58,649 INFO L93 Difference]: Finished difference Result 7873 states and 11747 transitions. [2023-11-06 22:54:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:58,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:54:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:54:58,665 INFO L225 Difference]: With dead ends: 7873 [2023-11-06 22:54:58,666 INFO L226 Difference]: Without dead ends: 7003 [2023-11-06 22:54:58,669 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 [2023-11-06 22:54:58,670 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1521 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1786 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 [2023-11-06 22:54:58,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1786 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:54:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2023-11-06 22:54:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 7001. [2023-11-06 22:54:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6999 states have (on average 1.4832118874124876) internal successors, (10381), 7000 states have internal predecessors, (10381), 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) [2023-11-06 22:54:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 10381 transitions. [2023-11-06 22:54:59,250 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 10381 transitions. Word has length 94 [2023-11-06 22:54:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:54:59,251 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 10381 transitions. [2023-11-06 22:54:59,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 10381 transitions. [2023-11-06 22:54:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:54:59,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:54:59,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:59,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:54:59,253 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:54:59,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1089352421, now seen corresponding path program 1 times [2023-11-06 22:54:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:59,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275900094] [2023-11-06 22:54:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:59,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:59,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275900094] [2023-11-06 22:54:59,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275900094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:59,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:59,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363072719] [2023-11-06 22:54:59,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:59,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:59,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:59,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:59,365 INFO L87 Difference]: Start difference. First operand 7001 states and 10381 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:00,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:00,176 INFO L93 Difference]: Finished difference Result 10221 states and 15295 transitions. [2023-11-06 22:55:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:55:00,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:55:00,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:00,195 INFO L225 Difference]: With dead ends: 10221 [2023-11-06 22:55:00,195 INFO L226 Difference]: Without dead ends: 8547 [2023-11-06 22:55:00,201 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 [2023-11-06 22:55:00,201 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1519 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1788 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 [2023-11-06 22:55:00,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:55:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8547 states. [2023-11-06 22:55:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8547 to 8545. [2023-11-06 22:55:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8543 states have (on average 1.4857778298021773) internal successors, (12693), 8544 states have internal predecessors, (12693), 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) [2023-11-06 22:55:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 12693 transitions. [2023-11-06 22:55:01,046 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 12693 transitions. Word has length 94 [2023-11-06 22:55:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:01,047 INFO L495 AbstractCegarLoop]: Abstraction has 8545 states and 12693 transitions. [2023-11-06 22:55:01,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 12693 transitions. [2023-11-06 22:55:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:55:01,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:01,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:01,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:55:01,049 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:01,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1523888357, now seen corresponding path program 1 times [2023-11-06 22:55:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914938826] [2023-11-06 22:55:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:01,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:01,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914938826] [2023-11-06 22:55:01,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914938826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:01,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:01,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028218991] [2023-11-06 22:55:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:01,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:55:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:01,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:55:01,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:55:01,146 INFO L87 Difference]: Start difference. First operand 8545 states and 12693 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:02,372 INFO L93 Difference]: Finished difference Result 14725 states and 22007 transitions. [2023-11-06 22:55:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:55:02,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:55:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:02,398 INFO L225 Difference]: With dead ends: 14725 [2023-11-06 22:55:02,398 INFO L226 Difference]: Without dead ends: 11507 [2023-11-06 22:55:02,405 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 [2023-11-06 22:55:02,406 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 1515 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1784 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 [2023-11-06 22:55:02,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1784 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:55:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11507 states. [2023-11-06 22:55:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11507 to 11505. [2023-11-06 22:55:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11505 states, 11503 states have (on average 1.4831783013127011) internal successors, (17061), 11504 states have internal predecessors, (17061), 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) [2023-11-06 22:55:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11505 states to 11505 states and 17061 transitions. [2023-11-06 22:55:03,839 INFO L78 Accepts]: Start accepts. Automaton has 11505 states and 17061 transitions. Word has length 94 [2023-11-06 22:55:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:03,839 INFO L495 AbstractCegarLoop]: Abstraction has 11505 states and 17061 transitions. [2023-11-06 22:55:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 11505 states and 17061 transitions. [2023-11-06 22:55:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:55:03,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:03,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:55:03,842 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:03,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:03,843 INFO L85 PathProgramCache]: Analyzing trace with hash 990146075, now seen corresponding path program 1 times [2023-11-06 22:55:03,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:03,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890270477] [2023-11-06 22:55:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890270477] [2023-11-06 22:55:03,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890270477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:03,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:03,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164350998] [2023-11-06 22:55:03,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:03,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:55:03,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:55:03,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:55:03,941 INFO L87 Difference]: Start difference. First operand 11505 states and 17061 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:06,312 INFO L93 Difference]: Finished difference Result 23349 states and 34663 transitions. [2023-11-06 22:55:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:55:06,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:55:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:06,351 INFO L225 Difference]: With dead ends: 23349 [2023-11-06 22:55:06,351 INFO L226 Difference]: Without dead ends: 17171 [2023-11-06 22:55:06,361 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 [2023-11-06 22:55:06,362 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1517 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1790 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 [2023-11-06 22:55:06,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:55:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17171 states. [2023-11-06 22:55:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17171 to 17169. [2023-11-06 22:55:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17169 states, 17167 states have (on average 1.472884021669482) internal successors, (25285), 17168 states have internal predecessors, (25285), 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) [2023-11-06 22:55:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17169 states to 17169 states and 25285 transitions. [2023-11-06 22:55:09,079 INFO L78 Accepts]: Start accepts. Automaton has 17169 states and 25285 transitions. Word has length 94 [2023-11-06 22:55:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:09,079 INFO L495 AbstractCegarLoop]: Abstraction has 17169 states and 25285 transitions. [2023-11-06 22:55:09,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 17169 states and 25285 transitions. [2023-11-06 22:55:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:55:09,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:09,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:09,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:55:09,082 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:09,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1703496475, now seen corresponding path program 1 times [2023-11-06 22:55:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:09,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115133924] [2023-11-06 22:55:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115133924] [2023-11-06 22:55:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115133924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:09,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:09,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743177861] [2023-11-06 22:55:09,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:09,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:55:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:55:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:55:09,181 INFO L87 Difference]: Start difference. First operand 17169 states and 25285 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:13,613 INFO L93 Difference]: Finished difference Result 39829 states and 58439 transitions. [2023-11-06 22:55:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:55:13,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:55:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:13,669 INFO L225 Difference]: With dead ends: 39829 [2023-11-06 22:55:13,670 INFO L226 Difference]: Without dead ends: 27987 [2023-11-06 22:55:13,686 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 [2023-11-06 22:55:13,687 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1523 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1792 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 [2023-11-06 22:55:13,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1792 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:55:13,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27987 states. [2023-11-06 22:55:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27987 to 27985. [2023-11-06 22:55:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27985 states, 27983 states have (on average 1.4547761140692563) internal successors, (40709), 27984 states have internal predecessors, (40709), 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) [2023-11-06 22:55:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27985 states to 27985 states and 40709 transitions. [2023-11-06 22:55:18,680 INFO L78 Accepts]: Start accepts. Automaton has 27985 states and 40709 transitions. Word has length 94 [2023-11-06 22:55:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:18,680 INFO L495 AbstractCegarLoop]: Abstraction has 27985 states and 40709 transitions. [2023-11-06 22:55:18,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 27985 states and 40709 transitions. [2023-11-06 22:55:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 22:55:18,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:18,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:18,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:55:18,683 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:18,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1087415530, now seen corresponding path program 1 times [2023-11-06 22:55:18,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348866255] [2023-11-06 22:55:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:18,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348866255] [2023-11-06 22:55:18,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348866255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:18,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:18,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:18,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395532062] [2023-11-06 22:55:18,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:18,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:55:18,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:55:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:55:18,812 INFO L87 Difference]: Start difference. First operand 27985 states and 40709 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-06 22:55:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:26,553 INFO L93 Difference]: Finished difference Result 51544 states and 75275 transitions. [2023-11-06 22:55:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:55:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2023-11-06 22:55:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:26,620 INFO L225 Difference]: With dead ends: 51544 [2023-11-06 22:55:26,620 INFO L226 Difference]: Without dead ends: 38997 [2023-11-06 22:55:26,639 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 [2023-11-06 22:55:26,640 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1526 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1789 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 [2023-11-06 22:55:26,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:55:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38997 states. [2023-11-06 22:55:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38997 to 38995. [2023-11-06 22:55:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38995 states, 38993 states have (on average 1.4478239684045855) internal successors, (56455), 38994 states have internal predecessors, (56455), 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) [2023-11-06 22:55:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38995 states to 38995 states and 56455 transitions. [2023-11-06 22:55:34,153 INFO L78 Accepts]: Start accepts. Automaton has 38995 states and 56455 transitions. Word has length 96 [2023-11-06 22:55:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:34,154 INFO L495 AbstractCegarLoop]: Abstraction has 38995 states and 56455 transitions. [2023-11-06 22:55:34,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-06 22:55:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 38995 states and 56455 transitions. [2023-11-06 22:55:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 22:55:34,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:34,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:34,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:55:34,164 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:34,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash 54573310, now seen corresponding path program 1 times [2023-11-06 22:55:34,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:34,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078480196] [2023-11-06 22:55:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:34,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:55:34,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078480196] [2023-11-06 22:55:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078480196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:34,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:55:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889027938] [2023-11-06 22:55:34,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:55:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:55:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:55:34,636 INFO L87 Difference]: Start difference. First operand 38995 states and 56455 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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)