./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal197.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal197.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8 --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 64bit --witnessprinter.graph.data.programhash 4b281d174780679fb43d3d959f21efa521a742b070a9277718453261ee4d1e5c --- 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-e04fb08 [2022-11-16 11:56:54,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:56:54,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:56:54,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:56:54,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:56:54,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:56:54,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:56:54,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:56:54,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:56:54,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:56:54,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:56:54,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:56:54,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:56:54,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:56:54,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:56:54,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:56:54,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:56:54,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:56:54,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:56:54,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:56:54,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:56:54,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:56:54,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:56:54,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:56:54,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:56:54,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:56:54,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:56:54,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:56:54,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:56:54,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:56:54,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:56:54,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:56:54,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:56:54,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:56:54,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:56:54,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:56:54,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:56:54,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:56:54,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:56:54,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:56:54,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:56:54,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:56:54,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:56:54,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:56:54,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:56:54,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:56:54,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:56:54,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:56:54,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:56:54,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:56:54,796 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:56:54,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:56:54,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:56:54,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:56:54,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:56:54,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:56:54,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:56:54,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:56:54,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:56:54,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:56:54,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:56:54,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:56:54,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:56:54,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:54,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:56:54,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:56:54,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:56:54,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:56:54,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:56:54,800 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:56:54,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:56:54,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:56:54,801 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_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b281d174780679fb43d3d959f21efa521a742b070a9277718453261ee4d1e5c [2022-11-16 11:56:55,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:56:55,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:56:55,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:56:55,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:56:55,103 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:56:55,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal197.c [2022-11-16 11:56:55,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/data/1133bf7ad/66d5c7f0dc7d419c93a0749a31a0c61f/FLAG5f4f473a9 [2022-11-16 11:56:56,411 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:56:56,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal197.c [2022-11-16 11:56:56,500 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/data/1133bf7ad/66d5c7f0dc7d419c93a0749a31a0c61f/FLAG5f4f473a9 [2022-11-16 11:56:56,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/data/1133bf7ad/66d5c7f0dc7d419c93a0749a31a0c61f [2022-11-16 11:56:56,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:56:56,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:56:56,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:56,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:56:56,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:56:56,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:56" (1/1) ... [2022-11-16 11:56:56,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3798260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:56, skipping insertion in model container [2022-11-16 11:56:56,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:56" (1/1) ... [2022-11-16 11:56:56,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:56:57,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:56:57,670 WARN L229 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_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal197.c[1107,1120] [2022-11-16 11:57:00,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:00,341 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:57:00,352 WARN L229 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_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal197.c[1107,1120] [2022-11-16 11:57:02,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:02,219 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:57:02,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02 WrapperNode [2022-11-16 11:57:02,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:02,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:02,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:57:02,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:57:02,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:02,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:05,021 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56855 [2022-11-16 11:57:05,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:05,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:57:05,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:57:05,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:57:05,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:05,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:05,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:05,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:06,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:06,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:06,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:06,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:07,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:57:07,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:57:07,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:57:07,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:57:07,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (1/1) ... [2022-11-16 11:57:07,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:07,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:07,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5236cb9d-7b6c-49d9-b7d3-5769520c5d09/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:57:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:57:11,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:57:11,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:57:51,735 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:57:51,784 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:57:51,785 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:57:51,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:51 BoogieIcfgContainer [2022-11-16 11:57:51,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:57:51,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:57:51,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:57:51,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:57:51,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:56:56" (1/3) ... [2022-11-16 11:57:51,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6212da22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:51, skipping insertion in model container [2022-11-16 11:57:51,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:02" (2/3) ... [2022-11-16 11:57:51,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6212da22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:51, skipping insertion in model container [2022-11-16 11:57:51,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:51" (3/3) ... [2022-11-16 11:57:51,804 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal197.c [2022-11-16 11:57:51,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:57:51,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:57:52,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:52,249 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;@6df47624, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:52,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:57:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 10808 states, 10806 states have (on average 1.6664815843050158) internal successors, (18008), 10807 states have internal predecessors, (18008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-16 11:57:52,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:52,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:52,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1759816806, now seen corresponding path program 1 times [2022-11-16 11:57:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:52,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330707418] [2022-11-16 11:57:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:57,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330707418] [2022-11-16 11:57:57,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330707418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:57,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:57,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:57:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906809001] [2022-11-16 11:57:57,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:57,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:57,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:57,716 INFO L87 Difference]: Start difference. First operand has 10808 states, 10806 states have (on average 1.6664815843050158) internal successors, (18008), 10807 states have internal predecessors, (18008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:58,654 INFO L93 Difference]: Finished difference Result 32917 states and 54857 transitions. [2022-11-16 11:57:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2022-11-16 11:57:58,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:58,748 INFO L225 Difference]: With dead ends: 32917 [2022-11-16 11:57:58,748 INFO L226 Difference]: Without dead ends: 22111 [2022-11-16 11:57:58,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:57:58,777 INFO L413 NwaCegarLoop]: 18845 mSDtfsCounter, 53982 mSDsluCounter, 19683 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53982 SdHoareTripleChecker+Valid, 38528 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:58,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53982 Valid, 38528 Invalid, 18 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:57:58,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22111 states. [2022-11-16 11:57:59,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22111 to 10806. [2022-11-16 11:57:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10806 states, 10805 states have (on average 1.6662656177695512) internal successors, (18004), 10805 states have internal predecessors, (18004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10806 states to 10806 states and 18004 transitions. [2022-11-16 11:57:59,275 INFO L78 Accepts]: Start accepts. Automaton has 10806 states and 18004 transitions. Word has length 343 [2022-11-16 11:57:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:59,280 INFO L495 AbstractCegarLoop]: Abstraction has 10806 states and 18004 transitions. [2022-11-16 11:57:59,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 10806 states and 18004 transitions. [2022-11-16 11:57:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-16 11:57:59,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:59,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:59,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:57:59,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:59,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1281980838, now seen corresponding path program 1 times [2022-11-16 11:57:59,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:59,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456918633] [2022-11-16 11:57:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:59,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:23,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:23,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456918633] [2022-11-16 11:58:23,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456918633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:23,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:23,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:58:23,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006675019] [2022-11-16 11:58:23,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:58:23,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:58:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:58:23,295 INFO L87 Difference]: Start difference. First operand 10806 states and 18004 transitions. Second operand has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:56,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:59:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:01,432 INFO L93 Difference]: Finished difference Result 82567 states and 137573 transitions. [2022-11-16 11:59:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:59:01,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-16 11:59:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:01,574 INFO L225 Difference]: With dead ends: 82567 [2022-11-16 11:59:01,575 INFO L226 Difference]: Without dead ends: 71763 [2022-11-16 11:59:01,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:59:01,603 INFO L413 NwaCegarLoop]: 14729 mSDtfsCounter, 135281 mSDsluCounter, 85028 mSDsCounter, 0 mSdLazyCounter, 23093 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135281 SdHoareTripleChecker+Valid, 99757 SdHoareTripleChecker+Invalid, 23099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23093 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:01,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135281 Valid, 99757 Invalid, 23099 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [5 Valid, 23093 Invalid, 1 Unknown, 0 Unchecked, 35.8s Time] [2022-11-16 11:59:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71763 states. [2022-11-16 11:59:02,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71763 to 10983. [2022-11-16 11:59:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10983 states, 10982 states have (on average 1.666089965397924) internal successors, (18297), 10982 states have internal predecessors, (18297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10983 states to 10983 states and 18297 transitions. [2022-11-16 11:59:02,133 INFO L78 Accepts]: Start accepts. Automaton has 10983 states and 18297 transitions. Word has length 344 [2022-11-16 11:59:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:02,133 INFO L495 AbstractCegarLoop]: Abstraction has 10983 states and 18297 transitions. [2022-11-16 11:59:02,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 10983 states and 18297 transitions. [2022-11-16 11:59:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-16 11:59:02,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:02,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:02,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:59:02,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1284024620, now seen corresponding path program 1 times [2022-11-16 11:59:02,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667661966] [2022-11-16 11:59:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:02,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:10,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:10,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667661966] [2022-11-16 11:59:10,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667661966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:10,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:10,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:59:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553706927] [2022-11-16 11:59:10,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:10,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:59:10,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:10,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:59:10,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:59:10,922 INFO L87 Difference]: Start difference. First operand 10983 states and 18297 transitions. Second operand has 7 states, 7 states have (on average 49.285714285714285) internal successors, (345), 7 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:48,826 INFO L93 Difference]: Finished difference Result 75858 states and 126385 transitions. [2022-11-16 11:59:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:59:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.285714285714285) internal successors, (345), 7 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2022-11-16 11:59:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:48,901 INFO L225 Difference]: With dead ends: 75858 [2022-11-16 11:59:48,902 INFO L226 Difference]: Without dead ends: 65054 [2022-11-16 11:59:48,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:59:48,930 INFO L413 NwaCegarLoop]: 29508 mSDtfsCounter, 143847 mSDsluCounter, 117671 mSDsCounter, 0 mSdLazyCounter, 33429 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143847 SdHoareTripleChecker+Valid, 147179 SdHoareTripleChecker+Invalid, 33436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:48,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143847 Valid, 147179 Invalid, 33436 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [7 Valid, 33429 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time] [2022-11-16 11:59:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65054 states. [2022-11-16 11:59:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65054 to 11097. [2022-11-16 11:59:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11097 states, 11096 states have (on average 1.665825522710887) internal successors, (18484), 11096 states have internal predecessors, (18484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11097 states to 11097 states and 18484 transitions. [2022-11-16 11:59:49,345 INFO L78 Accepts]: Start accepts. Automaton has 11097 states and 18484 transitions. Word has length 345 [2022-11-16 11:59:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:49,346 INFO L495 AbstractCegarLoop]: Abstraction has 11097 states and 18484 transitions. [2022-11-16 11:59:49,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.285714285714285) internal successors, (345), 7 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 11097 states and 18484 transitions. [2022-11-16 11:59:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-16 11:59:49,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:49,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:49,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:59:49,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:49,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash -66385490, now seen corresponding path program 1 times [2022-11-16 11:59:49,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:49,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272619893] [2022-11-16 11:59:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:49,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:03,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272619893] [2022-11-16 12:00:03,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272619893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:03,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:03,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147775713] [2022-11-16 12:00:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:03,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:00:03,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:00:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:03,542 INFO L87 Difference]: Start difference. First operand 11097 states and 18484 transitions. Second operand has 8 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:42,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:00:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:47,546 INFO L93 Difference]: Finished difference Result 102197 states and 170033 transitions. [2022-11-16 12:00:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:00:47,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2022-11-16 12:00:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:47,670 INFO L225 Difference]: With dead ends: 102197 [2022-11-16 12:00:47,670 INFO L226 Difference]: Without dead ends: 91334 [2022-11-16 12:00:47,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:00:47,716 INFO L413 NwaCegarLoop]: 30113 mSDtfsCounter, 195162 mSDsluCounter, 178544 mSDsCounter, 0 mSdLazyCounter, 34576 mSolverCounterSat, 725 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195162 SdHoareTripleChecker+Valid, 208657 SdHoareTripleChecker+Invalid, 35302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 34576 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:47,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195162 Valid, 208657 Invalid, 35302 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [725 Valid, 34576 Invalid, 1 Unknown, 0 Unchecked, 40.5s Time] [2022-11-16 12:00:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91334 states. [2022-11-16 12:00:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91334 to 11139. [2022-11-16 12:00:48,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11139 states, 11138 states have (on average 1.6654695636559527) internal successors, (18550), 11138 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11139 states to 11139 states and 18550 transitions. [2022-11-16 12:00:48,235 INFO L78 Accepts]: Start accepts. Automaton has 11139 states and 18550 transitions. Word has length 345 [2022-11-16 12:00:48,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:48,236 INFO L495 AbstractCegarLoop]: Abstraction has 11139 states and 18550 transitions. [2022-11-16 12:00:48,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11139 states and 18550 transitions. [2022-11-16 12:00:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-16 12:00:48,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:48,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:48,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:00:48,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash -133257018, now seen corresponding path program 1 times [2022-11-16 12:00:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:48,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234645064] [2022-11-16 12:00:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat