./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN --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 198234a6cbed333832b896acc347872fc09d4c349ed801953a7aa6331aa2ab3f --- 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-6b4ec56 [2022-11-20 10:45:05,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:45:05,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:45:06,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:45:06,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:45:06,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:45:06,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:45:06,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:45:06,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:45:06,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:45:06,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:45:06,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:45:06,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:45:06,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:45:06,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:45:06,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:45:06,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:45:06,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:45:06,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:45:06,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:45:06,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:45:06,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:45:06,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:45:06,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:45:06,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:45:06,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:45:06,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:45:06,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:45:06,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:45:06,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:45:06,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:45:06,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:45:06,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:45:06,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:45:06,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:45:06,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:45:06,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:45:06,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:45:06,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:45:06,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:45:06,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:45:06,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:45:06,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:45:06,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:45:06,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:45:06,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:45:06,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:45:06,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:45:06,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:45:06,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:45:06,115 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:45:06,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:45:06,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:45:06,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:45:06,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:45:06,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:45:06,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:45:06,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:45:06,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:45:06,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:45:06,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:45:06,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:45:06,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:45:06,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:45:06,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:45:06,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:45:06,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:45:06,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:45:06,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:45:06,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:45:06,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:45:06,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:45:06,121 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:45:06,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:45:06,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:45:06,121 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_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 198234a6cbed333832b896acc347872fc09d4c349ed801953a7aa6331aa2ab3f [2022-11-20 10:45:06,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:45:06,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:45:06,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:45:06,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:45:06,409 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:45:06,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c [2022-11-20 10:45:09,507 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:45:10,293 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:45:10,293 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c [2022-11-20 10:45:10,344 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/data/1174a51ac/cadf51a9926848b9877947ded520c91e/FLAG4ce3ee4cf [2022-11-20 10:45:10,360 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/data/1174a51ac/cadf51a9926848b9877947ded520c91e [2022-11-20 10:45:10,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:45:10,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:45:10,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:45:10,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:45:10,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:45:10,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:10" (1/1) ... [2022-11-20 10:45:10,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15118ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:10, skipping insertion in model container [2022-11-20 10:45:10,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:10" (1/1) ... [2022-11-20 10:45:10,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:45:10,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:45:13,092 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_89800f06-608c-4874-9642-29bafbcaa728/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[380323,380336] [2022-11-20 10:45:13,118 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_89800f06-608c-4874-9642-29bafbcaa728/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[383339,383352] [2022-11-20 10:45:13,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:45:13,375 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:45:14,555 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_89800f06-608c-4874-9642-29bafbcaa728/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[380323,380336] [2022-11-20 10:45:14,606 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_89800f06-608c-4874-9642-29bafbcaa728/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[383339,383352] [2022-11-20 10:45:14,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:45:14,692 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:45:14,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14 WrapperNode [2022-11-20 10:45:14,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:45:14,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:45:14,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:45:14,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:45:14,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:14,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,140 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-11-20 10:45:15,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:45:15,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:45:15,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:45:15,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:45:15,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:45:15,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:45:15,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:45:15,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:45:15,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (1/1) ... [2022-11-20 10:45:15,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:45:15,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:15,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:45:15,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 10:45:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 10:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 10:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 10:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 10:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 10:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 10:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 10:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 10:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 10:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 10:45:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 10:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:45:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:45:16,012 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:45:16,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:45:25,140 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:45:25,168 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:45:25,168 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 10:45:25,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:45:25 BoogieIcfgContainer [2022-11-20 10:45:25,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:45:25,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:45:25,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:45:25,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:45:25,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:45:10" (1/3) ... [2022-11-20 10:45:25,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de2d64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:45:25, skipping insertion in model container [2022-11-20 10:45:25,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:14" (2/3) ... [2022-11-20 10:45:25,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de2d64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:45:25, skipping insertion in model container [2022-11-20 10:45:25,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:45:25" (3/3) ... [2022-11-20 10:45:25,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.03.cil-2.c [2022-11-20 10:45:25,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:45:25,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:45:25,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:45:25,340 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;@1303a5a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:45:25,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:45:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 10:45:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:25,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:25,369 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] [2022-11-20 10:45:25,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-11-20 10:45:25,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:25,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26652282] [2022-11-20 10:45:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:25,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:26,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:26,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26652282] [2022-11-20 10:45:26,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26652282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:26,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:26,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:45:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833720366] [2022-11-20 10:45:26,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:26,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:45:26,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:45:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:45:26,068 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:27,675 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-11-20 10:45:27,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:45:27,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:27,715 INFO L225 Difference]: With dead ends: 4899 [2022-11-20 10:45:27,716 INFO L226 Difference]: Without dead ends: 2500 [2022-11-20 10:45:27,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:45:27,731 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 4551 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 16647 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:27,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 16647 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:45:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-11-20 10:45:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-11-20 10:45:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-11-20 10:45:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-11-20 10:45:27,914 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-11-20 10:45:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:27,915 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-11-20 10:45:27,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-11-20 10:45:27,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:27,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:27,929 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] [2022-11-20 10:45:27,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:45:27,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-11-20 10:45:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:27,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484003207] [2022-11-20 10:45:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:27,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:28,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:28,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:28,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:28,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484003207] [2022-11-20 10:45:28,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484003207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:28,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:28,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:45:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596241245] [2022-11-20 10:45:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:28,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:45:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:45:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:45:28,259 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:29,904 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-11-20 10:45:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:45:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:29,918 INFO L225 Difference]: With dead ends: 2969 [2022-11-20 10:45:29,918 INFO L226 Difference]: Without dead ends: 2686 [2022-11-20 10:45:29,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:45:29,925 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4481 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4491 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:29,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4491 Valid, 20741 Invalid, 1269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:45:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-11-20 10:45:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-11-20 10:45:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-11-20 10:45:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-11-20 10:45:30,027 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-11-20 10:45:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:30,028 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-11-20 10:45:30,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-11-20 10:45:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:30,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:30,030 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] [2022-11-20 10:45:30,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:45:30,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-11-20 10:45:30,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:30,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89817534] [2022-11-20 10:45:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:30,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89817534] [2022-11-20 10:45:30,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89817534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:30,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:30,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:45:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543220277] [2022-11-20 10:45:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:45:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:45:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:45:30,193 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:31,724 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-11-20 10:45:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:45:31,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:31,738 INFO L225 Difference]: With dead ends: 3451 [2022-11-20 10:45:31,738 INFO L226 Difference]: Without dead ends: 3035 [2022-11-20 10:45:31,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:45:31,742 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4479 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:31,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20739 Invalid, 1267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:45:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-11-20 10:45:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-11-20 10:45:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-11-20 10:45:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-11-20 10:45:31,859 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-11-20 10:45:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:31,859 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-11-20 10:45:31,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-11-20 10:45:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:31,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:31,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:45:31,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-11-20 10:45:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:31,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945590867] [2022-11-20 10:45:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:32,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:32,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945590867] [2022-11-20 10:45:32,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945590867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:32,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:32,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:45:32,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014427187] [2022-11-20 10:45:32,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:32,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:45:32,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:32,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:45:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:45:32,016 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:33,655 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-11-20 10:45:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:45:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:33,675 INFO L225 Difference]: With dead ends: 4382 [2022-11-20 10:45:33,675 INFO L226 Difference]: Without dead ends: 3699 [2022-11-20 10:45:33,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:45:33,693 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4475 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:33,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 20739 Invalid, 1258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:45:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-11-20 10:45:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-11-20 10:45:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-11-20 10:45:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-11-20 10:45:33,866 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-11-20 10:45:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:33,866 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-11-20 10:45:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-11-20 10:45:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:33,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:33,876 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] [2022-11-20 10:45:33,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:45:33,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-11-20 10:45:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:33,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845342589] [2022-11-20 10:45:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:33,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:34,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845342589] [2022-11-20 10:45:34,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845342589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:34,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:34,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:45:34,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202742163] [2022-11-20 10:45:34,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:34,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:45:34,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:45:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:45:34,041 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:35,846 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-11-20 10:45:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:45:35,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:35,874 INFO L225 Difference]: With dead ends: 6651 [2022-11-20 10:45:35,874 INFO L226 Difference]: Without dead ends: 5433 [2022-11-20 10:45:35,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:45:35,883 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4606 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:35,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4620 Valid, 20729 Invalid, 1247 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [52 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:45:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-11-20 10:45:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-11-20 10:45:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-11-20 10:45:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-11-20 10:45:36,218 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-11-20 10:45:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:36,219 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-11-20 10:45:36,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-11-20 10:45:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:36,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:36,223 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] [2022-11-20 10:45:36,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:45:36,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:36,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-11-20 10:45:36,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:36,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605806803] [2022-11-20 10:45:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:36,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:36,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605806803] [2022-11-20 10:45:36,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605806803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:36,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:36,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:45:36,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397747450] [2022-11-20 10:45:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:36,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:45:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:45:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:45:36,389 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:38,585 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-11-20 10:45:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:45:38,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:38,626 INFO L225 Difference]: With dead ends: 10516 [2022-11-20 10:45:38,626 INFO L226 Difference]: Without dead ends: 8247 [2022-11-20 10:45:38,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:45:38,636 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4495 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 20725 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:38,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 20725 Invalid, 1417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:45:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-11-20 10:45:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-11-20 10:45:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-11-20 10:45:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-11-20 10:45:39,065 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-11-20 10:45:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:39,067 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-11-20 10:45:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-11-20 10:45:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:39,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:39,073 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] [2022-11-20 10:45:39,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:45:39,074 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-11-20 10:45:39,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:39,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823570680] [2022-11-20 10:45:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:39,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:39,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:39,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823570680] [2022-11-20 10:45:39,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823570680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:39,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:39,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:45:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430502758] [2022-11-20 10:45:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:39,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:45:39,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:45:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:45:39,251 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:41,319 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-11-20 10:45:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:45:41,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:41,376 INFO L225 Difference]: With dead ends: 17230 [2022-11-20 10:45:41,376 INFO L226 Difference]: Without dead ends: 12950 [2022-11-20 10:45:41,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:45:41,393 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4484 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:41,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 20729 Invalid, 1204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:45:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-11-20 10:45:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-11-20 10:45:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-11-20 10:45:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-11-20 10:45:42,174 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-11-20 10:45:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:42,175 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-11-20 10:45:42,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-11-20 10:45:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:45:42,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:42,184 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] [2022-11-20 10:45:42,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:45:42,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-11-20 10:45:42,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:42,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064862820] [2022-11-20 10:45:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:42,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:42,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:42,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064862820] [2022-11-20 10:45:42,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064862820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:42,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:42,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:45:42,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844520389] [2022-11-20 10:45:42,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:42,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:45:42,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:42,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:45:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:45:42,310 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:44,541 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-11-20 10:45:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:45:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 10:45:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:44,615 INFO L225 Difference]: With dead ends: 25979 [2022-11-20 10:45:44,615 INFO L226 Difference]: Without dead ends: 17584 [2022-11-20 10:45:44,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:45:44,649 INFO L413 NwaCegarLoop]: 4214 mSDtfsCounter, 4648 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:44,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 16542 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:45:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-11-20 10:45:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-11-20 10:45:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-11-20 10:45:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-11-20 10:45:45,770 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-11-20 10:45:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:45,771 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-11-20 10:45:45,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:45:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-11-20 10:45:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:45:45,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:45,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:45,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:45:45,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-11-20 10:45:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:45,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851226655] [2022-11-20 10:45:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:45,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:45,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:45,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:45,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:45:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:45:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:46,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:45:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:45:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:46,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851226655] [2022-11-20 10:45:46,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851226655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:46,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788887423] [2022-11-20 10:45:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:46,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:46,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:46,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:45:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:46,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:45:46,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 10:45:46,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:46,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788887423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:46,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:45:46,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 10:45:46,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075102791] [2022-11-20 10:45:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:45:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:46,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:45:46,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:45:46,406 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:45:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:48,287 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-11-20 10:45:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:45:48,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-11-20 10:45:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:48,402 INFO L225 Difference]: With dead ends: 39550 [2022-11-20 10:45:48,402 INFO L226 Difference]: Without dead ends: 26962 [2022-11-20 10:45:48,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:45:48,445 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:48,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:45:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-11-20 10:45:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-11-20 10:45:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-11-20 10:45:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-11-20 10:45:50,025 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-11-20 10:45:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:50,025 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-11-20 10:45:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:45:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-11-20 10:45:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:45:50,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:50,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:50,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:50,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:50,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:50,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-11-20 10:45:50,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:50,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451571628] [2022-11-20 10:45:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:45:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:45:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:45:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:45:50,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:50,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451571628] [2022-11-20 10:45:50,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451571628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:50,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326509054] [2022-11-20 10:45:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:50,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:50,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:50,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:45:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:50,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:45:50,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:45:50,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:50,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326509054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:50,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:45:50,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 10:45:50,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341008365] [2022-11-20 10:45:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:50,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:45:50,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:45:50,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:45:50,707 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:45:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:53,975 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-11-20 10:45:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:45:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-11-20 10:45:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:54,198 INFO L225 Difference]: With dead ends: 75333 [2022-11-20 10:45:54,198 INFO L226 Difference]: Without dead ends: 50702 [2022-11-20 10:45:54,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:45:54,260 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:54,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:45:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-11-20 10:45:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-11-20 10:45:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-11-20 10:45:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-11-20 10:45:58,071 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-11-20 10:45:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:58,072 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-11-20 10:45:58,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:45:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-11-20 10:45:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:45:58,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:58,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:58,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:58,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:45:58,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:58,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:58,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-11-20 10:45:58,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:58,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182072609] [2022-11-20 10:45:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:45:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:45:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:45:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:45:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:45:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:45:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:45:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:45:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:45:58,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:58,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182072609] [2022-11-20 10:45:58,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182072609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:58,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665371579] [2022-11-20 10:45:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:58,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:58,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:58,567 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:58,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:45:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:58,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:45:58,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 10:45:58,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:58,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665371579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:58,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:45:58,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-20 10:45:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983041781] [2022-11-20 10:45:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:58,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:45:58,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:45:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:45:58,740 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:46:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:04,457 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-11-20 10:46:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-11-20 10:46:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:04,896 INFO L225 Difference]: With dead ends: 144685 [2022-11-20 10:46:04,896 INFO L226 Difference]: Without dead ends: 96511 [2022-11-20 10:46:05,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:05,052 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:05,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:46:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-11-20 10:46:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-11-20 10:46:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-11-20 10:46:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-11-20 10:46:12,876 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-11-20 10:46:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:12,877 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-11-20 10:46:12,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:46:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-11-20 10:46:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 10:46:13,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:13,242 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:13,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:13,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:13,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-11-20 10:46:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:13,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62355096] [2022-11-20 10:46:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:13,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:46:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:46:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 10:46:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:46:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 10:46:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 10:46:13,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:13,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62355096] [2022-11-20 10:46:13,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62355096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:13,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368661283] [2022-11-20 10:46:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:13,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:13,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:13,653 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:13,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89800f06-608c-4874-9642-29bafbcaa728/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:46:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:13,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 10:46:14,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:14,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368661283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:14,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:46:14,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 10:46:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919403208] [2022-11-20 10:46:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:14,029 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)