./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a --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 c8abad431da7d9146c5b99f7cc30e3f21809ea47f0ee3e1b67f0f16e9fc90542 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:34:56,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:34:56,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:34:56,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:34:56,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:34:56,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:34:56,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:34:56,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:34:56,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:34:56,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:34:56,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:34:56,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:34:56,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:34:56,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:34:56,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:34:56,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:34:56,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:34:56,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:34:56,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:34:56,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:34:56,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:34:56,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:34:56,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:34:56,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:34:56,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:34:56,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:34:56,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:34:56,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:34:56,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:34:56,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:34:56,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:34:56,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:34:56,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:34:56,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:34:56,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:34:56,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:34:56,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:34:56,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:34:56,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:34:56,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:34:56,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:34:56,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:34:56,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:34:56,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:34:56,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:34:56,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:34:56,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:34:56,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:34:56,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:34:56,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:34:56,696 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:34:56,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:34:56,697 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:34:56,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:34:56,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:34:56,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:34:56,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:34:56,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:34:56,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:34:56,700 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:34:56,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:34:56,701 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:34:56,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:34:56,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:34:56,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:34:56,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:34:56,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:34:56,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:34:56,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:34:56,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:34:56,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:34:56,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:34:56,705 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:34:56,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:34:56,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:34:56,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8abad431da7d9146c5b99f7cc30e3f21809ea47f0ee3e1b67f0f16e9fc90542 [2022-11-21 16:34:57,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:34:57,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:34:57,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:34:57,077 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:34:57,078 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:34:57,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-21 16:35:00,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:35:00,914 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:35:00,914 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-21 16:35:00,932 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/data/299f04566/20b891148b364ef9bd0c755a5d98f7ff/FLAGc334c3c3a [2022-11-21 16:35:00,968 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/data/299f04566/20b891148b364ef9bd0c755a5d98f7ff [2022-11-21 16:35:00,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:35:00,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:35:00,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:35:00,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:35:00,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:35:00,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:00" (1/1) ... [2022-11-21 16:35:00,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323e52f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:00, skipping insertion in model container [2022-11-21 16:35:00,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:00" (1/1) ... [2022-11-21 16:35:00,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:35:01,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:35:01,321 WARN L237 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_85b482f4-5282-4d7e-a5a1-9143c921687c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7363,7376] [2022-11-21 16:35:01,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:35:01,392 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:35:01,514 WARN L237 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_85b482f4-5282-4d7e-a5a1-9143c921687c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7363,7376] [2022-11-21 16:35:01,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:35:01,603 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:35:01,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01 WrapperNode [2022-11-21 16:35:01,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:35:01,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:35:01,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:35:01,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:35:01,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,728 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 623 [2022-11-21 16:35:01,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:35:01,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:35:01,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:35:01,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:35:01,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:35:01,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:35:01,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:35:01,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:35:01,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (1/1) ... [2022-11-21 16:35:01,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:35:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:35:01,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:35:01,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b482f4-5282-4d7e-a5a1-9143c921687c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:35:01,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:35:01,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:35:01,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:35:01,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:35:02,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:35:02,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:35:02,979 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:35:02,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:35:03,004 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:35:03,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:03 BoogieIcfgContainer [2022-11-21 16:35:03,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:35:03,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:35:03,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:35:03,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:35:03,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:35:00" (1/3) ... [2022-11-21 16:35:03,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f223010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:35:03, skipping insertion in model container [2022-11-21 16:35:03,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:01" (2/3) ... [2022-11-21 16:35:03,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f223010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:35:03, skipping insertion in model container [2022-11-21 16:35:03,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:03" (3/3) ... [2022-11-21 16:35:03,026 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-21 16:35:03,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:35:03,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:35:03,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:35:03,127 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;@156fe94a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:35:03,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:35:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 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) [2022-11-21 16:35:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 16:35:03,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:03,146 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] [2022-11-21 16:35:03,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash -652154134, now seen corresponding path program 1 times [2022-11-21 16:35:03,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:03,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677733389] [2022-11-21 16:35:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:03,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677733389] [2022-11-21 16:35:03,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677733389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:03,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:03,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348707164] [2022-11-21 16:35:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:03,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:03,829 INFO L87 Difference]: Start difference. First operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 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 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:04,025 INFO L93 Difference]: Finished difference Result 385 states and 627 transitions. [2022-11-21 16:35:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:04,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-21 16:35:04,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:04,047 INFO L225 Difference]: With dead ends: 385 [2022-11-21 16:35:04,053 INFO L226 Difference]: Without dead ends: 260 [2022-11-21 16:35:04,058 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 [2022-11-21 16:35:04,063 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 212 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:04,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 609 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-21 16:35:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2022-11-21 16:35:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.5019455252918288) internal successors, (386), 257 states have internal predecessors, (386), 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) [2022-11-21 16:35:04,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 386 transitions. [2022-11-21 16:35:04,221 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 386 transitions. Word has length 73 [2022-11-21 16:35:04,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:04,223 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 386 transitions. [2022-11-21 16:35:04,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 386 transitions. [2022-11-21 16:35:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 16:35:04,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:04,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:04,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:35:04,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash -399717739, now seen corresponding path program 1 times [2022-11-21 16:35:04,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:04,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552927700] [2022-11-21 16:35:04,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:04,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:04,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:04,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552927700] [2022-11-21 16:35:04,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552927700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:04,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:04,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:04,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107474197] [2022-11-21 16:35:04,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:04,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:04,514 INFO L87 Difference]: Start difference. First operand 258 states and 386 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:04,590 INFO L93 Difference]: Finished difference Result 654 states and 1018 transitions. [2022-11-21 16:35:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:04,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-21 16:35:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:04,599 INFO L225 Difference]: With dead ends: 654 [2022-11-21 16:35:04,600 INFO L226 Difference]: Without dead ends: 440 [2022-11-21 16:35:04,608 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 [2022-11-21 16:35:04,610 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 168 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:04,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 539 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-21 16:35:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2022-11-21 16:35:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.540045766590389) internal successors, (673), 437 states have internal predecessors, (673), 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) [2022-11-21 16:35:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 673 transitions. [2022-11-21 16:35:04,696 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 673 transitions. Word has length 74 [2022-11-21 16:35:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:04,697 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 673 transitions. [2022-11-21 16:35:04,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 673 transitions. [2022-11-21 16:35:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-21 16:35:04,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:04,706 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] [2022-11-21 16:35:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:35:04,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:04,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1868398039, now seen corresponding path program 1 times [2022-11-21 16:35:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:04,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611884167] [2022-11-21 16:35:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:04,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611884167] [2022-11-21 16:35:04,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611884167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:04,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:04,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:04,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844341636] [2022-11-21 16:35:04,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:04,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:04,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:04,901 INFO L87 Difference]: Start difference. First operand 438 states and 673 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-21 16:35:05,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:05,008 INFO L93 Difference]: Finished difference Result 1162 states and 1827 transitions. [2022-11-21 16:35:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:05,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-11-21 16:35:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:05,015 INFO L225 Difference]: With dead ends: 1162 [2022-11-21 16:35:05,015 INFO L226 Difference]: Without dead ends: 768 [2022-11-21 16:35:05,020 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 [2022-11-21 16:35:05,026 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 163 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:05,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 524 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-21 16:35:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2022-11-21 16:35:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.5594771241830065) internal successors, (1193), 765 states have internal predecessors, (1193), 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) [2022-11-21 16:35:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1193 transitions. [2022-11-21 16:35:05,133 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1193 transitions. Word has length 75 [2022-11-21 16:35:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:05,134 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1193 transitions. [2022-11-21 16:35:05,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-21 16:35:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1193 transitions. [2022-11-21 16:35:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:35:05,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:05,137 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] [2022-11-21 16:35:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:35:05,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1093755554, now seen corresponding path program 1 times [2022-11-21 16:35:05,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:05,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751935292] [2022-11-21 16:35:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:05,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:05,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751935292] [2022-11-21 16:35:05,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751935292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:05,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:05,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:05,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029087882] [2022-11-21 16:35:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:05,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:05,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:05,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:05,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:05,296 INFO L87 Difference]: Start difference. First operand 766 states and 1193 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-21 16:35:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:05,460 INFO L93 Difference]: Finished difference Result 2082 states and 3283 transitions. [2022-11-21 16:35:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:05,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) 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 [2022-11-21 16:35:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:05,467 INFO L225 Difference]: With dead ends: 2082 [2022-11-21 16:35:05,467 INFO L226 Difference]: Without dead ends: 1360 [2022-11-21 16:35:05,469 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 [2022-11-21 16:35:05,470 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 158 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:05,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 509 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2022-11-21 16:35:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1358. [2022-11-21 16:35:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.565954310980103) internal successors, (2125), 1357 states have internal predecessors, (2125), 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) [2022-11-21 16:35:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2125 transitions. [2022-11-21 16:35:05,731 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2125 transitions. Word has length 76 [2022-11-21 16:35:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:05,732 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 2125 transitions. [2022-11-21 16:35:05,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-21 16:35:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2125 transitions. [2022-11-21 16:35:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:35:05,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:05,735 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] [2022-11-21 16:35:05,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:35:05,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:05,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2108543356, now seen corresponding path program 1 times [2022-11-21 16:35:05,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:05,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102120583] [2022-11-21 16:35:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:05,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:05,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102120583] [2022-11-21 16:35:05,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102120583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:05,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:05,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:05,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791668932] [2022-11-21 16:35:05,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:05,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:05,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:05,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:05,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:05,905 INFO L87 Difference]: Start difference. First operand 1358 states and 2125 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:06,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:06,261 INFO L93 Difference]: Finished difference Result 3730 states and 5871 transitions. [2022-11-21 16:35:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:06,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-21 16:35:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:06,274 INFO L225 Difference]: With dead ends: 3730 [2022-11-21 16:35:06,274 INFO L226 Difference]: Without dead ends: 2416 [2022-11-21 16:35:06,276 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 [2022-11-21 16:35:06,277 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 153 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:06,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-11-21 16:35:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2022-11-21 16:35:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2413 states have (on average 1.563613758806465) internal successors, (3773), 2413 states have internal predecessors, (3773), 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) [2022-11-21 16:35:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3773 transitions. [2022-11-21 16:35:06,645 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3773 transitions. Word has length 77 [2022-11-21 16:35:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:06,646 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3773 transitions. [2022-11-21 16:35:06,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3773 transitions. [2022-11-21 16:35:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 16:35:06,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:06,648 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] [2022-11-21 16:35:06,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:35:06,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:06,649 INFO L85 PathProgramCache]: Analyzing trace with hash -741254085, now seen corresponding path program 1 times [2022-11-21 16:35:06,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:06,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890283339] [2022-11-21 16:35:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:06,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:06,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:06,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890283339] [2022-11-21 16:35:06,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890283339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:06,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:06,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840972865] [2022-11-21 16:35:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:06,793 INFO L87 Difference]: Start difference. First operand 2414 states and 3773 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) [2022-11-21 16:35:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:07,471 INFO L93 Difference]: Finished difference Result 6642 states and 10399 transitions. [2022-11-21 16:35:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:07,472 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 [2022-11-21 16:35:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:07,488 INFO L225 Difference]: With dead ends: 6642 [2022-11-21 16:35:07,488 INFO L226 Difference]: Without dead ends: 4272 [2022-11-21 16:35:07,494 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 [2022-11-21 16:35:07,497 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 148 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:07,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 479 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-11-21 16:35:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4270. [2022-11-21 16:35:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4270 states, 4269 states have (on average 1.554696650269384) internal successors, (6637), 4269 states have internal predecessors, (6637), 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) [2022-11-21 16:35:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6637 transitions. [2022-11-21 16:35:08,243 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6637 transitions. Word has length 78 [2022-11-21 16:35:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:08,243 INFO L495 AbstractCegarLoop]: Abstraction has 4270 states and 6637 transitions. [2022-11-21 16:35:08,244 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) [2022-11-21 16:35:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6637 transitions. [2022-11-21 16:35:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 16:35:08,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:08,245 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] [2022-11-21 16:35:08,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:35:08,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:08,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:08,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1744404253, now seen corresponding path program 1 times [2022-11-21 16:35:08,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:08,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630919067] [2022-11-21 16:35:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:08,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:08,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630919067] [2022-11-21 16:35:08,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630919067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:08,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:08,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:35:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244440270] [2022-11-21 16:35:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:08,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:35:08,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:35:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:35:08,517 INFO L87 Difference]: Start difference. First operand 4270 states and 6637 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:12,642 INFO L93 Difference]: Finished difference Result 33852 states and 52788 transitions. [2022-11-21 16:35:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:35:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-21 16:35:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:12,786 INFO L225 Difference]: With dead ends: 33852 [2022-11-21 16:35:12,786 INFO L226 Difference]: Without dead ends: 29626 [2022-11-21 16:35:12,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:35:12,802 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 2559 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:12,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 2474 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:35:12,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29626 states. [2022-11-21 16:35:14,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29626 to 8494. [2022-11-21 16:35:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8494 states, 8493 states have (on average 1.5425644648534087) internal successors, (13101), 8493 states have internal predecessors, (13101), 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) [2022-11-21 16:35:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 13101 transitions. [2022-11-21 16:35:14,888 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 13101 transitions. Word has length 79 [2022-11-21 16:35:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:14,888 INFO L495 AbstractCegarLoop]: Abstraction has 8494 states and 13101 transitions. [2022-11-21 16:35:14,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 13101 transitions. [2022-11-21 16:35:14,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 16:35:14,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:14,891 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] [2022-11-21 16:35:14,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:35:14,891 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1738586808, now seen corresponding path program 1 times [2022-11-21 16:35:14,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:14,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998771198] [2022-11-21 16:35:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:15,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:15,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998771198] [2022-11-21 16:35:15,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998771198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:15,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:15,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:35:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407020007] [2022-11-21 16:35:15,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:15,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:35:15,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:15,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:35:15,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:35:15,279 INFO L87 Difference]: Start difference. First operand 8494 states and 13101 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-11-21 16:35:22,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:22,971 INFO L93 Difference]: Finished difference Result 51514 states and 78771 transitions. [2022-11-21 16:35:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:35:22,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 80 [2022-11-21 16:35:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:23,121 INFO L225 Difference]: With dead ends: 51514 [2022-11-21 16:35:23,121 INFO L226 Difference]: Without dead ends: 43064 [2022-11-21 16:35:23,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:35:23,141 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 981 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:23,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1831 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43064 states. [2022-11-21 16:35:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43064 to 43054. [2022-11-21 16:35:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43054 states, 43053 states have (on average 1.5232620258750842) internal successors, (65581), 43053 states have internal predecessors, (65581), 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) [2022-11-21 16:35:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43054 states to 43054 states and 65581 transitions. [2022-11-21 16:35:31,925 INFO L78 Accepts]: Start accepts. Automaton has 43054 states and 65581 transitions. Word has length 80 [2022-11-21 16:35:31,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:31,925 INFO L495 AbstractCegarLoop]: Abstraction has 43054 states and 65581 transitions. [2022-11-21 16:35:31,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-11-21 16:35:31,926 INFO L276 IsEmpty]: Start isEmpty. Operand 43054 states and 65581 transitions. [2022-11-21 16:35:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 16:35:31,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:31,927 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] [2022-11-21 16:35:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:35:31,928 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:31,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1401026767, now seen corresponding path program 1 times [2022-11-21 16:35:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:31,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261613758] [2022-11-21 16:35:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:31,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:32,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:32,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261613758] [2022-11-21 16:35:32,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261613758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:32,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:32,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084815024] [2022-11-21 16:35:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:32,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:35:32,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:35:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:32,068 INFO L87 Difference]: Start difference. First operand 43054 states and 65581 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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) [2022-11-21 16:35:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:44,624 INFO L93 Difference]: Finished difference Result 122866 states and 187311 transitions. [2022-11-21 16:35:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:44,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-11-21 16:35:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:44,848 INFO L225 Difference]: With dead ends: 122866 [2022-11-21 16:35:44,848 INFO L226 Difference]: Without dead ends: 79856 [2022-11-21 16:35:44,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:35:44,900 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 992 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:44,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 254 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:35:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79856 states. [2022-11-21 16:35:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79856 to 79854. [2022-11-21 16:35:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79854 states, 79853 states have (on average 1.5161484227267603) internal successors, (121069), 79853 states have internal predecessors, (121069), 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) [2022-11-21 16:35:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79854 states to 79854 states and 121069 transitions. [2022-11-21 16:35:56,993 INFO L78 Accepts]: Start accepts. Automaton has 79854 states and 121069 transitions. Word has length 82 [2022-11-21 16:35:56,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:56,994 INFO L495 AbstractCegarLoop]: Abstraction has 79854 states and 121069 transitions. [2022-11-21 16:35:56,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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) [2022-11-21 16:35:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 79854 states and 121069 transitions. [2022-11-21 16:35:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 16:35:56,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:56,997 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] [2022-11-21 16:35:56,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:35:56,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:56,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:56,998 INFO L85 PathProgramCache]: Analyzing trace with hash 830610186, now seen corresponding path program 1 times [2022-11-21 16:35:56,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:56,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117602254] [2022-11-21 16:35:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:57,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:57,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117602254] [2022-11-21 16:35:57,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117602254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:57,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:57,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:35:57,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812612795] [2022-11-21 16:35:57,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:57,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:35:57,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:57,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:35:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:57,325 INFO L87 Difference]: Start difference. First operand 79854 states and 121069 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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)