./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal102.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal102.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc --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 846b1cb1c611d4c1d273e6d56adfeb45c130ec32b355545b780871d2f6cc1496 --- 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-5e519f3 [2022-11-02 21:12:12,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:12:12,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:12:12,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:12:12,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:12:12,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:12:12,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:12:12,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:12:12,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:12:12,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:12:12,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:12:12,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:12:12,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:12:12,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:12:12,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:12:12,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:12:12,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:12:12,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:12:12,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:12:12,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:12:12,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:12:12,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:12:12,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:12:12,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:12:12,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:12:12,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:12:12,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:12:12,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:12:12,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:12:12,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:12:12,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:12:12,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:12:12,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:12:12,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:12:12,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:12:12,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:12:12,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:12:12,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:12:12,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:12:12,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:12:12,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:12:12,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:12:12,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:12:12,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:12:12,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:12:12,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:12:12,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:12:12,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:12:12,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:12:12,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:12:12,220 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:12:12,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:12:12,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:12:12,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:12:12,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:12:12,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:12:12,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:12:12,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:12:12,223 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:12:12,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:12:12,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:12:12,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:12:12,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:12:12,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:12,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:12:12,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:12:12,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:12:12,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:12:12,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:12:12,227 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:12:12,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:12:12,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:12:12,227 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_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846b1cb1c611d4c1d273e6d56adfeb45c130ec32b355545b780871d2f6cc1496 [2022-11-02 21:12:12,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:12:12,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:12:12,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:12:12,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:12:12,502 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:12:12,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal102.c [2022-11-02 21:12:12,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/data/eed4373ad/81b3c65ff7c8467fad85c59c58ebbc2b/FLAGb7774b012 [2022-11-02 21:12:13,544 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:13,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal102.c [2022-11-02 21:12:13,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/data/eed4373ad/81b3c65ff7c8467fad85c59c58ebbc2b/FLAGb7774b012 [2022-11-02 21:12:13,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/data/eed4373ad/81b3c65ff7c8467fad85c59c58ebbc2b [2022-11-02 21:12:13,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:13,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:13,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:13,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:13,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:13,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:13" (1/1) ... [2022-11-02 21:12:13,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a571e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:13, skipping insertion in model container [2022-11-02 21:12:13,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:13" (1/1) ... [2022-11-02 21:12:13,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:14,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:14,602 WARN L230 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_47201b2d-96df-4a1d-a3b7-34b192877bbf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal102.c[1107,1120] [2022-11-02 21:12:16,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:16,399 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:16,423 WARN L230 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_47201b2d-96df-4a1d-a3b7-34b192877bbf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal102.c[1107,1120] [2022-11-02 21:12:17,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:17,786 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:17,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17 WrapperNode [2022-11-02 21:12:17,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:17,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:17,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:17,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:17,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:18,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:20,557 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24876 [2022-11-02 21:12:20,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:20,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:20,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:20,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:20,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:20,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:20,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:20,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:21,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:21,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:22,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:22,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:22,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:22,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:22,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:22,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:22,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (1/1) ... [2022-11-02 21:12:22,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:22,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:22,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:22,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:25,209 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:25,210 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:15:24,966 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:15:24,993 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:15:24,993 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:15:24,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:15:24 BoogieIcfgContainer [2022-11-02 21:15:24,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:15:25,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:15:25,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:15:25,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:15:25,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:13" (1/3) ... [2022-11-02 21:15:25,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7269b576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:15:25, skipping insertion in model container [2022-11-02 21:15:25,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:17" (2/3) ... [2022-11-02 21:15:25,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7269b576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:15:25, skipping insertion in model container [2022-11-02 21:15:25,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:15:24" (3/3) ... [2022-11-02 21:15:25,009 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal102.c [2022-11-02 21:15:25,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:15:25,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:15:25,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:15:25,131 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;@de3911c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:15:25,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:15:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 3121 states, 3119 states have (on average 1.4998396922090413) internal successors, (4678), 3120 states have internal predecessors, (4678), 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) [2022-11-02 21:15:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:15:25,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:15:25,156 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] [2022-11-02 21:15:25,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:15:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:15:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1592028135, now seen corresponding path program 1 times [2022-11-02 21:15:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:15:25,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052554402] [2022-11-02 21:15:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:15:25,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:15:25,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:15:25,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685908985] [2022-11-02 21:15:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:15:25,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:15:25,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:15:25,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:15:25,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:15:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:15:32,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:15:32,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:15:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:15:32,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:15:32,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:15:32,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052554402] [2022-11-02 21:15:32,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:15:32,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685908985] [2022-11-02 21:15:32,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685908985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:15:32,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:15:32,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:15:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504319186] [2022-11-02 21:15:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:15:32,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:15:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:15:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:15:32,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:15:32,273 INFO L87 Difference]: Start difference. First operand has 3121 states, 3119 states have (on average 1.4998396922090413) internal successors, (4678), 3120 states have internal predecessors, (4678), 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 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-02 21:15:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:15:37,125 INFO L93 Difference]: Finished difference Result 9352 states and 14027 transitions. [2022-11-02 21:15:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:15:37,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2022-11-02 21:15:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:15:37,161 INFO L225 Difference]: With dead ends: 9352 [2022-11-02 21:15:37,161 INFO L226 Difference]: Without dead ends: 6233 [2022-11-02 21:15:37,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:15:37,174 INFO L413 NwaCegarLoop]: 4548 mSDtfsCounter, 9336 mSDsluCounter, 9182 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9336 SdHoareTripleChecker+Valid, 13730 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:15:37,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9336 Valid, 13730 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 21:15:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2022-11-02 21:15:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 3119. [2022-11-02 21:15:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 3118 states have (on average 1.4990378447722899) internal successors, (4674), 3118 states have internal predecessors, (4674), 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) [2022-11-02 21:15:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4674 transitions. [2022-11-02 21:15:37,315 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4674 transitions. Word has length 21 [2022-11-02 21:15:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:15:37,315 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 4674 transitions. [2022-11-02 21:15:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-02 21:15:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4674 transitions. [2022-11-02 21:15:37,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:15:37,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:15:37,317 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] [2022-11-02 21:15:37,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:15:37,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 21:15:37,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:15:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:15:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -402116571, now seen corresponding path program 1 times [2022-11-02 21:15:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:15:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411472477] [2022-11-02 21:15:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:15:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:15:37,933 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:15:37,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219061551] [2022-11-02 21:15:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:15:37,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:15:37,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:15:37,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:15:37,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:15:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:15:44,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:15:44,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:15:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:15:52,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:15:52,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:15:52,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411472477] [2022-11-02 21:15:52,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:15:52,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219061551] [2022-11-02 21:15:52,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219061551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:15:52,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:15:52,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:15:52,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981225900] [2022-11-02 21:15:52,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:15:52,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:15:52,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:15:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:15:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:15:52,285 INFO L87 Difference]: Start difference. First operand 3119 states and 4674 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-11-02 21:15:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:15:54,462 INFO L93 Difference]: Finished difference Result 6234 states and 9344 transitions. [2022-11-02 21:15:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:15:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2022-11-02 21:15:54,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:15:54,478 INFO L225 Difference]: With dead ends: 6234 [2022-11-02 21:15:54,479 INFO L226 Difference]: Without dead ends: 3119 [2022-11-02 21:15:54,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:15:54,488 INFO L413 NwaCegarLoop]: 4632 mSDtfsCounter, 9333 mSDsluCounter, 4630 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9333 SdHoareTripleChecker+Valid, 9262 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:15:54,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9333 Valid, 9262 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:15:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2022-11-02 21:15:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3119. [2022-11-02 21:15:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 3118 states have (on average 1.4987171263630532) internal successors, (4673), 3118 states have internal predecessors, (4673), 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) [2022-11-02 21:15:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4673 transitions. [2022-11-02 21:15:54,561 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4673 transitions. Word has length 21 [2022-11-02 21:15:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:15:54,562 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 4673 transitions. [2022-11-02 21:15:54,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-11-02 21:15:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4673 transitions. [2022-11-02 21:15:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:15:54,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:15:54,563 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] [2022-11-02 21:15:54,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:15:54,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:15:54,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:15:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:15:54,791 INFO L85 PathProgramCache]: Analyzing trace with hash -143951133, now seen corresponding path program 1 times [2022-11-02 21:15:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:15:54,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190733279] [2022-11-02 21:15:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:15:54,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:15:55,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:15:55,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685039861] [2022-11-02 21:15:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:15:55,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:15:55,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:15:55,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:15:55,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:16:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:16:00,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:16:00,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:16:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:16:00,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:16:00,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:16:00,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190733279] [2022-11-02 21:16:00,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:16:00,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685039861] [2022-11-02 21:16:00,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685039861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:16:00,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:16:00,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:16:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481234436] [2022-11-02 21:16:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:16:00,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:16:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:16:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:16:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:16:00,801 INFO L87 Difference]: Start difference. First operand 3119 states and 4673 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-02 21:16:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:16:05,868 INFO L93 Difference]: Finished difference Result 9356 states and 14020 transitions. [2022-11-02 21:16:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:16:05,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2022-11-02 21:16:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:16:05,887 INFO L225 Difference]: With dead ends: 9356 [2022-11-02 21:16:05,887 INFO L226 Difference]: Without dead ends: 6241 [2022-11-02 21:16:05,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:16:05,892 INFO L413 NwaCegarLoop]: 4556 mSDtfsCounter, 9325 mSDsluCounter, 9179 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9325 SdHoareTripleChecker+Valid, 13735 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:16:05,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9325 Valid, 13735 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 21:16:05,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-11-02 21:16:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 3127. [2022-11-02 21:16:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 3126 states have (on average 1.4980806142034548) internal successors, (4683), 3126 states have internal predecessors, (4683), 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) [2022-11-02 21:16:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4683 transitions. [2022-11-02 21:16:05,968 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4683 transitions. Word has length 21 [2022-11-02 21:16:05,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:16:05,969 INFO L495 AbstractCegarLoop]: Abstraction has 3127 states and 4683 transitions. [2022-11-02 21:16:05,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-02 21:16:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4683 transitions. [2022-11-02 21:16:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:16:05,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:16:05,970 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] [2022-11-02 21:16:06,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:16:06,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:16:06,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:16:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:16:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -536978143, now seen corresponding path program 1 times [2022-11-02 21:16:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:16:06,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434300218] [2022-11-02 21:16:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:16:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:16:06,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:16:06,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271788173] [2022-11-02 21:16:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:16:06,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:16:06,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:16:06,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:16:06,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47201b2d-96df-4a1d-a3b7-34b192877bbf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process