./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-030.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-030.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8bdc872c5ed6c7e0dbc38b05ab7b9d01b9923069718666e7e19722e23b3300c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:48:07,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:48:07,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:48:07,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:48:07,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:48:07,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:48:08,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:48:08,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:48:08,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:48:08,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:48:08,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:48:08,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:48:08,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:48:08,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:48:08,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:48:08,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:48:08,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:48:08,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:48:08,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:48:08,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:48:08,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:48:08,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:48:08,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:48:08,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:48:08,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:48:08,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:48:08,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:48:08,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:48:08,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:48:08,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:48:08,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:48:08,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:48:08,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:48:08,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:48:08,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:48:08,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:48:08,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:48:08,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:48:08,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:48:08,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:48:08,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:48:08,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:48:08,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:48:08,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:48:08,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:48:08,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:48:08,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:48:08,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:48:08,165 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:48:08,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:48:08,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:48:08,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:48:08,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:48:08,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:48:08,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:48:08,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:48:08,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:48:08,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:48:08,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:48:08,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:48:08,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:48:08,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:48:08,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:48:08,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:48:08,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:08,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:48:08,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:48:08,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:48:08,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:48:08,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:48:08,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:48:08,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:48:08,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:48:08,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:48:08,174 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_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8bdc872c5ed6c7e0dbc38b05ab7b9d01b9923069718666e7e19722e23b3300c [2021-11-09 09:48:08,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:48:08,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:48:08,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:48:08,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:48:08,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:48:08,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/xcsp/Dubois-030.c [2021-11-09 09:48:08,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/8874a05d7/1814888a34d44f0fbd56caa23f0b65f5/FLAGc1393d1a9 [2021-11-09 09:48:09,392 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:48:09,393 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/sv-benchmarks/c/xcsp/Dubois-030.c [2021-11-09 09:48:09,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/8874a05d7/1814888a34d44f0fbd56caa23f0b65f5/FLAGc1393d1a9 [2021-11-09 09:48:09,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/8874a05d7/1814888a34d44f0fbd56caa23f0b65f5 [2021-11-09 09:48:09,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:48:09,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:48:09,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:09,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:48:09,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:48:09,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:09" (1/1) ... [2021-11-09 09:48:09,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cce1ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:09, skipping insertion in model container [2021-11-09 09:48:09,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:09" (1/1) ... [2021-11-09 09:48:09,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:48:09,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:48:10,198 WARN L228 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_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/sv-benchmarks/c/xcsp/Dubois-030.c[21240,21253] [2021-11-09 09:48:10,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:10,234 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:48:10,342 WARN L228 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_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/sv-benchmarks/c/xcsp/Dubois-030.c[21240,21253] [2021-11-09 09:48:10,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:10,363 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:48:10,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10 WrapperNode [2021-11-09 09:48:10,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:10,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:48:10,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:48:10,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:48:10,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:48:10,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:48:10,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:48:10,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:48:10,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:48:10,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:48:10,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:48:10,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:48:10,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (1/1) ... [2021-11-09 09:48:10,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:10,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:10,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:48:10,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:48:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:48:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:48:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:48:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:48:12,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:48:12,109 INFO L299 CfgBuilder]: Removed 484 assume(true) statements. [2021-11-09 09:48:12,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:12 BoogieIcfgContainer [2021-11-09 09:48:12,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:48:12,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:48:12,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:48:12,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:48:12,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:48:09" (1/3) ... [2021-11-09 09:48:12,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3165cce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:12, skipping insertion in model container [2021-11-09 09:48:12,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:10" (2/3) ... [2021-11-09 09:48:12,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3165cce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:12, skipping insertion in model container [2021-11-09 09:48:12,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:12" (3/3) ... [2021-11-09 09:48:12,127 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-030.c [2021-11-09 09:48:12,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:48:12,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:48:12,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:48:12,220 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:48:12,220 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:48:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 486 states, 484 states have (on average 1.4979338842975207) internal successors, (725), 485 states have internal predecessors, (725), 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) [2021-11-09 09:48:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-11-09 09:48:12,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:12,344 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:12,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash -950920377, now seen corresponding path program 1 times [2021-11-09 09:48:12,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:12,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650584950] [2021-11-09 09:48:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:12,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:12,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:12,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650584950] [2021-11-09 09:48:12,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650584950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:12,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:12,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:48:12,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435242947] [2021-11-09 09:48:12,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:48:12,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:48:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:48:12,930 INFO L87 Difference]: Start difference. First operand has 486 states, 484 states have (on average 1.4979338842975207) internal successors, (725), 485 states have internal predecessors, (725), 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 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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) [2021-11-09 09:48:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:12,999 INFO L93 Difference]: Finished difference Result 966 states and 1444 transitions. [2021-11-09 09:48:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:48:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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 482 [2021-11-09 09:48:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:13,027 INFO L225 Difference]: With dead ends: 966 [2021-11-09 09:48:13,027 INFO L226 Difference]: Without dead ends: 483 [2021-11-09 09:48:13,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:48:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-09 09:48:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-11-09 09:48:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.0) internal successors, (482), 482 states have internal predecessors, (482), 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) [2021-11-09 09:48:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 482 transitions. [2021-11-09 09:48:13,131 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 482 transitions. Word has length 482 [2021-11-09 09:48:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:13,134 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 482 transitions. [2021-11-09 09:48:13,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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) [2021-11-09 09:48:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 482 transitions. [2021-11-09 09:48:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-11-09 09:48:13,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:13,148 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:13,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:48:13,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash 663021219, now seen corresponding path program 1 times [2021-11-09 09:48:13,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:13,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723403899] [2021-11-09 09:48:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:13,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:48:14,683 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:48:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:48:16,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:48:16,226 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 09:48:16,228 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:48:16,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:48:16,233 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 09:48:16,238 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:48:16,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:48:16 BoogieIcfgContainer [2021-11-09 09:48:16,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:48:16,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:48:16,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:48:16,524 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:48:16,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:12" (3/4) ... [2021-11-09 09:48:16,528 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 09:48:16,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:48:16,531 INFO L168 Benchmark]: Toolchain (without parser) took 6908.40 ms. Allocated memory was 104.9 MB in the beginning and 226.5 MB in the end (delta: 121.6 MB). Free memory was 62.5 MB in the beginning and 100.6 MB in the end (delta: -38.1 MB). Peak memory consumption was 82.9 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:16,531 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:48:16,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.12 ms. Allocated memory is still 104.9 MB. Free memory was 62.3 MB in the beginning and 55.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:16,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 177.25 ms. Allocated memory is still 104.9 MB. Free memory was 55.5 MB in the beginning and 40.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:16,543 INFO L168 Benchmark]: Boogie Preprocessor took 228.27 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 40.3 MB in the beginning and 110.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:16,544 INFO L168 Benchmark]: RCFGBuilder took 1341.11 ms. Allocated memory is still 144.7 MB. Free memory was 110.3 MB in the beginning and 64.9 MB in the end (delta: 45.4 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:16,545 INFO L168 Benchmark]: TraceAbstraction took 4406.71 ms. Allocated memory was 144.7 MB in the beginning and 226.5 MB in the end (delta: 81.8 MB). Free memory was 64.9 MB in the beginning and 100.6 MB in the end (delta: -35.7 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:48:16,546 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 226.5 MB. Free memory is still 100.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:48:16,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 735.12 ms. Allocated memory is still 104.9 MB. Free memory was 62.3 MB in the beginning and 55.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 177.25 ms. Allocated memory is still 104.9 MB. Free memory was 55.5 MB in the beginning and 40.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 228.27 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 40.3 MB in the beginning and 110.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1341.11 ms. Allocated memory is still 144.7 MB. Free memory was 110.3 MB in the beginning and 64.9 MB in the end (delta: 45.4 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4406.71 ms. Allocated memory was 144.7 MB in the beginning and 226.5 MB in the end (delta: 81.8 MB). Free memory was 64.9 MB in the beginning and 100.6 MB in the end (delta: -35.7 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.59 ms. Allocated memory is still 226.5 MB. Free memory is still 100.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 626]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 622. Possible FailurePath: [L22] int cond0; [L23] int dummy = 0; [L24] int N; [L25] int var0; [L26] var0 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L29] int var1; [L30] var1 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L33] int var2; [L34] var2 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L37] int var3; [L38] var3 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L41] int var4; [L42] var4 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L45] int var5; [L46] var5 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L49] int var6; [L50] var6 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L53] int var7; [L54] var7 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L57] int var8; [L58] var8 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L61] int var9; [L62] var9 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L65] int var10; [L66] var10 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L69] int var11; [L70] var11 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L73] int var12; [L74] var12 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L77] int var13; [L78] var13 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L81] int var14; [L82] var14 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L85] int var15; [L86] var15 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L89] int var16; [L90] var16 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L93] int var17; [L94] var17 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L97] int var18; [L98] var18 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L101] int var19; [L102] var19 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L105] int var20; [L106] var20 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L109] int var21; [L110] var21 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L113] int var22; [L114] var22 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L117] int var23; [L118] var23 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L121] int var24; [L122] var24 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L125] int var25; [L126] var25 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L129] int var26; [L130] var26 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L133] int var27; [L134] var27 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L137] int var28; [L138] var28 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L141] int var29; [L142] var29 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L145] int var30; [L146] var30 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L149] int var31; [L150] var31 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L153] int var32; [L154] var32 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L157] int var33; [L158] var33 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L161] int var34; [L162] var34 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L165] int var35; [L166] var35 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L169] int var36; [L170] var36 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L173] int var37; [L174] var37 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L177] int var38; [L178] var38 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L181] int var39; [L182] var39 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L185] int var40; [L186] var40 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L189] int var41; [L190] var41 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L193] int var42; [L194] var42 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L197] int var43; [L198] var43 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L201] int var44; [L202] var44 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L205] int var45; [L206] var45 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L209] int var46; [L210] var46 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L213] int var47; [L214] var47 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L217] int var48; [L218] var48 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L221] int var49; [L222] var49 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L225] int var50; [L226] var50 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L229] int var51; [L230] var51 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L233] int var52; [L234] var52 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L237] int var53; [L238] var53 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L241] int var54; [L242] var54 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L245] int var55; [L246] var55 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L249] int var56; [L250] var56 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L253] int var57; [L254] var57 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L257] int var58; [L258] var58 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L261] int var59; [L262] var59 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L265] int var60; [L266] var60 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L269] int var61; [L270] var61 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L273] int var62; [L274] var62 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L277] int var63; [L278] var63 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L281] int var64; [L282] var64 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L285] int var65; [L286] var65 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L289] int var66; [L290] var66 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L293] int var67; [L294] var67 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L297] int var68; [L298] var68 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L301] int var69; [L302] var69 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L305] int var70; [L306] var70 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L309] int var71; [L310] var71 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L313] int var72; [L314] var72 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L317] int var73; [L318] var73 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L321] int var74; [L322] var74 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L325] int var75; [L326] var75 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L329] int var76; [L330] var76 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L333] int var77; [L334] var77 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L337] int var78; [L338] var78 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L341] int var79; [L342] var79 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L345] int var80; [L346] var80 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L349] int var81; [L350] var81 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L353] int var82; [L354] var82 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L357] int var83; [L358] var83 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L361] int var84; [L362] var84 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L365] int var85; [L366] var85 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L369] int var86; [L370] var86 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L373] int var87; [L374] var87 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L377] int var88; [L378] var88 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L381] int var89; [L382] var89 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L385] int myvar0 = 1; [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L626] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 486 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 482 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=486occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 964 NumberOfCodeBlocks, 964 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 481 ConstructedInterpolants, 0 QuantifiedInterpolants, 481 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-09 09:48:16,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-030.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8bdc872c5ed6c7e0dbc38b05ab7b9d01b9923069718666e7e19722e23b3300c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:48:19,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:48:19,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:48:19,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:48:19,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:48:19,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:48:19,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:48:19,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:48:19,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:48:19,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:48:19,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:48:19,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:48:19,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:48:19,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:48:19,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:48:19,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:48:19,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:48:19,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:48:19,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:48:19,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:48:19,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:48:19,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:48:19,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:48:19,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:48:19,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:48:19,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:48:19,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:48:19,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:48:19,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:48:19,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:48:19,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:48:19,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:48:19,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:48:19,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:48:19,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:48:19,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:48:19,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:48:19,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:48:19,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:48:19,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:48:19,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:48:19,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 09:48:19,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:48:19,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:48:19,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:48:19,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:48:19,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:48:19,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:48:19,658 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:48:19,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:48:19,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:48:19,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:48:19,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:48:19,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:48:19,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:48:19,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:48:19,661 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:48:19,661 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:48:19,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:48:19,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:48:19,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:48:19,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:48:19,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:48:19,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:48:19,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:48:19,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:19,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:48:19,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:48:19,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:48:19,664 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:48:19,665 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:48:19,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:48:19,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:48:19,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:48:19,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:48:19,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:48:19,667 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8bdc872c5ed6c7e0dbc38b05ab7b9d01b9923069718666e7e19722e23b3300c [2021-11-09 09:48:20,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:48:20,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:48:20,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:48:20,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:48:20,191 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:48:20,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/xcsp/Dubois-030.c [2021-11-09 09:48:20,265 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/d193f1fb6/7c7def6e8e464e178467e9caa3ce5eb3/FLAGd9d7a53d1 [2021-11-09 09:48:21,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:48:21,058 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/sv-benchmarks/c/xcsp/Dubois-030.c [2021-11-09 09:48:21,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/d193f1fb6/7c7def6e8e464e178467e9caa3ce5eb3/FLAGd9d7a53d1 [2021-11-09 09:48:21,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/data/d193f1fb6/7c7def6e8e464e178467e9caa3ce5eb3 [2021-11-09 09:48:21,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:48:21,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:48:21,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:21,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:48:21,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:48:21,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:21" (1/1) ... [2021-11-09 09:48:21,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c30a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:21, skipping insertion in model container [2021-11-09 09:48:21,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:21" (1/1) ... [2021-11-09 09:48:21,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:48:21,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:48:21,813 WARN L228 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_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/sv-benchmarks/c/xcsp/Dubois-030.c[21240,21253] [2021-11-09 09:48:21,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:21,855 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:48:22,036 WARN L228 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_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/sv-benchmarks/c/xcsp/Dubois-030.c[21240,21253] [2021-11-09 09:48:22,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:22,057 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:48:22,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22 WrapperNode [2021-11-09 09:48:22,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:22,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:48:22,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:48:22,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:48:22,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:48:22,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:48:22,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:48:22,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:48:22,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:48:22,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:48:22,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:48:22,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:48:22,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (1/1) ... [2021-11-09 09:48:22,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:22,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:22,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:48:22,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:48:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:48:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:48:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:48:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:48:24,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:48:24,556 INFO L299 CfgBuilder]: Removed 484 assume(true) statements. [2021-11-09 09:48:24,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:24 BoogieIcfgContainer [2021-11-09 09:48:24,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:48:24,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:48:24,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:48:24,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:48:24,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:48:21" (1/3) ... [2021-11-09 09:48:24,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d182a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:24, skipping insertion in model container [2021-11-09 09:48:24,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:22" (2/3) ... [2021-11-09 09:48:24,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d182a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:24, skipping insertion in model container [2021-11-09 09:48:24,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:24" (3/3) ... [2021-11-09 09:48:24,573 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-030.c [2021-11-09 09:48:24,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:48:24,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:48:24,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:48:24,656 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:48:24,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:48:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 486 states, 484 states have (on average 1.4979338842975207) internal successors, (725), 485 states have internal predecessors, (725), 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) [2021-11-09 09:48:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-11-09 09:48:24,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:24,723 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:24,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash -950920377, now seen corresponding path program 1 times [2021-11-09 09:48:24,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:24,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122612414] [2021-11-09 09:48:24,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:24,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:24,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:24,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:24,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:48:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:25,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:48:25,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:27,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:48:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:28,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:48:28,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122612414] [2021-11-09 09:48:28,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122612414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:28,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:28,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:48:28,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293574871] [2021-11-09 09:48:28,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:48:28,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:48:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:48:28,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:48:28,144 INFO L87 Difference]: Start difference. First operand has 486 states, 484 states have (on average 1.4979338842975207) internal successors, (725), 485 states have internal predecessors, (725), 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 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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) [2021-11-09 09:48:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:28,205 INFO L93 Difference]: Finished difference Result 966 states and 1444 transitions. [2021-11-09 09:48:28,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:48:28,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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 482 [2021-11-09 09:48:28,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:28,225 INFO L225 Difference]: With dead ends: 966 [2021-11-09 09:48:28,226 INFO L226 Difference]: Without dead ends: 483 [2021-11-09 09:48:28,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 962 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:48:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-09 09:48:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-11-09 09:48:28,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.0) internal successors, (482), 482 states have internal predecessors, (482), 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) [2021-11-09 09:48:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 482 transitions. [2021-11-09 09:48:28,327 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 482 transitions. Word has length 482 [2021-11-09 09:48:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:28,328 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 482 transitions. [2021-11-09 09:48:28,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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) [2021-11-09 09:48:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 482 transitions. [2021-11-09 09:48:28,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-11-09 09:48:28,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:28,347 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:28,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:28,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:48:28,575 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash 663021219, now seen corresponding path program 1 times [2021-11-09 09:48:28,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:48:28,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036562825] [2021-11-09 09:48:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:28,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:48:28,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:48:28,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:48:28,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2759c67-fe74-4c1a-ace9-67f80e61d6e4/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:50:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:17,282 WARN L261 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 468 conjunts are in the unsatisfiable core [2021-11-09 09:50:17,333 INFO L286 TraceCheckSpWp]: Computing forward predicates...