./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25e51a8adaedf780ebc17d825bcf8567c6fe26dcb93621320dae5eec1509e5a5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:32:31,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:32:31,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:32:31,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:32:31,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:32:31,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:32:31,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:32:31,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:32:31,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:32:31,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:32:31,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:32:31,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:32:31,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:32:31,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:32:31,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:32:31,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:32:31,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:32:31,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:32:31,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:32:31,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:32:31,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:32:31,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:32:31,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:32:31,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:32:31,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:32:31,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:32:31,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:32:31,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:32:31,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:32:31,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:32:31,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:32:31,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:32:31,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:32:31,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:32:31,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:32:31,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:32:31,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:32:31,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:32:31,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:32:31,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:32:31,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:32:31,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:32:31,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:32:31,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:32:31,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:32:31,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:32:31,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:32:31,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:32:31,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:32:31,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:32:31,533 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:32:31,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:32:31,534 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:32:31,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:32:31,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:32:31,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:32:31,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:32:31,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:32:31,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:32:31,536 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:32:31,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:32:31,536 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:32:31,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:32:31,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:32:31,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:32:31,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:32:31,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:31,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:32:31,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:32:31,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:32:31,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:32:31,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:32:31,540 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:32:31,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:32:31,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:32:31,541 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_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25e51a8adaedf780ebc17d825bcf8567c6fe26dcb93621320dae5eec1509e5a5 [2022-11-16 12:32:31,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:32:31,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:32:31,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:32:31,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:32:31,814 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:32:31,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2022-11-16 12:32:31,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/21d097215/6bed109b13204e729d1dc21fd5761d73/FLAG527784b32 [2022-11-16 12:32:32,364 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:32:32,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2022-11-16 12:32:32,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/21d097215/6bed109b13204e729d1dc21fd5761d73/FLAG527784b32 [2022-11-16 12:32:32,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/21d097215/6bed109b13204e729d1dc21fd5761d73 [2022-11-16 12:32:32,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:32:32,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:32:32,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:32,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:32:32,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:32:32,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:32" (1/1) ... [2022-11-16 12:32:32,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394b68c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:32, skipping insertion in model container [2022-11-16 12:32:32,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:32" (1/1) ... [2022-11-16 12:32:32,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:32:32,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:32:33,008 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2022-11-16 12:32:33,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:33,057 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:32:33,072 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2022-11-16 12:32:33,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:33,118 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:32:33,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33 WrapperNode [2022-11-16 12:32:33,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:33,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:33,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:32:33,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:32:33,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,165 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-16 12:32:33,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:33,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:32:33,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:32:33,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:32:33,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:32:33,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:32:33,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:32:33,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:32:33,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (1/1) ... [2022-11-16 12:32:33,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:33,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:33,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:32:33,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:32:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:32:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:32:33,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:32:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:32:33,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:32:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:32:33,366 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:32:33,373 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:32:33,609 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:32:33,615 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:32:33,615 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:32:33,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:33 BoogieIcfgContainer [2022-11-16 12:32:33,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:32:33,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:32:33,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:32:33,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:32:33,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:32:32" (1/3) ... [2022-11-16 12:32:33,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a0b0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:33, skipping insertion in model container [2022-11-16 12:32:33,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:33" (2/3) ... [2022-11-16 12:32:33,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a0b0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:33, skipping insertion in model container [2022-11-16 12:32:33,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:33" (3/3) ... [2022-11-16 12:32:33,633 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound2.c [2022-11-16 12:32:33,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:32:33,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:32:33,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:32:33,733 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40d48523, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:32:33,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:32:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:32:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:32:33,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:33,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:33,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2022-11-16 12:32:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:33,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387839062] [2022-11-16 12:32:33,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:33,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:33,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:33,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387839062] [2022-11-16 12:32:33,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:32:33,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320761769] [2022-11-16 12:32:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:33,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:33,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:33,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:32:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:34,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:32:34,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:34,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:34,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320761769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:34,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:34,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712975444] [2022-11-16 12:32:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:34,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:32:34,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:34,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:32:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:32:34,124 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:34,153 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2022-11-16 12:32:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:32:34,156 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 12:32:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:34,164 INFO L225 Difference]: With dead ends: 40 [2022-11-16 12:32:34,165 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 12:32:34,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:32:34,176 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:34,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:32:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 12:32:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 12:32:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:32:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-11-16 12:32:34,224 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2022-11-16 12:32:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:34,225 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-16 12:32:34,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2022-11-16 12:32:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:32:34,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:34,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:34,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:34,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:32:34,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:34,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2022-11-16 12:32:34,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:34,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459582709] [2022-11-16 12:32:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:34,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:32:34,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924125007] [2022-11-16 12:32:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:34,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:34,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:34,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:32:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:34,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:32:34,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:34,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:34,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:34,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459582709] [2022-11-16 12:32:34,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:32:34,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924125007] [2022-11-16 12:32:34,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924125007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:34,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:34,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:32:34,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536490252] [2022-11-16 12:32:34,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:34,604 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:34,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:34,624 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-11-16 12:32:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:34,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 12:32:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:34,626 INFO L225 Difference]: With dead ends: 28 [2022-11-16 12:32:34,626 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:32:34,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:34,628 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:34,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:32:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:32:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 12:32:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:32:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-16 12:32:34,635 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2022-11-16 12:32:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:34,636 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-16 12:32:34,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-16 12:32:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:32:34,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:34,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:34,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:34,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:34,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2022-11-16 12:32:34,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:34,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593700943] [2022-11-16 12:32:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:34,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:34,865 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:32:34,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205179433] [2022-11-16 12:32:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:34,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:34,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:34,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:32:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:32:34,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:32:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:32:34,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:32:34,961 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:32:34,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:32:34,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:35,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:35,169 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 12:32:35,172 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:32:35,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:32:35 BoogieIcfgContainer [2022-11-16 12:32:35,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:32:35,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:32:35,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:32:35,206 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:32:35,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:33" (3/4) ... [2022-11-16 12:32:35,211 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:32:35,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:32:35,213 INFO L158 Benchmark]: Toolchain (without parser) took 2484.82ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 68.4MB in the beginning and 93.5MB in the end (delta: -25.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:35,214 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 75.7MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:35,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.08ms. Allocated memory is still 102.8MB. Free memory was 68.1MB in the beginning and 78.9MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:32:35,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.29ms. Allocated memory is still 102.8MB. Free memory was 78.9MB in the beginning and 77.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:35,216 INFO L158 Benchmark]: Boogie Preprocessor took 47.72ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 76.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:35,217 INFO L158 Benchmark]: RCFGBuilder took 402.44ms. Allocated memory is still 102.8MB. Free memory was 76.3MB in the beginning and 65.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:32:35,217 INFO L158 Benchmark]: TraceAbstraction took 1585.61ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 65.4MB in the beginning and 94.1MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:35,218 INFO L158 Benchmark]: Witness Printer took 5.96ms. Allocated memory is still 125.8MB. Free memory was 94.1MB in the beginning and 93.5MB in the end (delta: 681.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:35,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 75.7MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.08ms. Allocated memory is still 102.8MB. Free memory was 68.1MB in the beginning and 78.9MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.29ms. Allocated memory is still 102.8MB. Free memory was 78.9MB in the beginning and 77.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.72ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 76.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.44ms. Allocated memory is still 102.8MB. Free memory was 76.3MB in the beginning and 65.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1585.61ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 65.4MB in the beginning and 94.1MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.96ms. Allocated memory is still 125.8MB. Free memory was 94.1MB in the beginning and 93.5MB in the end (delta: 681.3kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, counter=0, r=1, s=13/4, x=2] [L33] EXPR counter++ VAL [a=2, counter=1, counter++=0, r=1, s=13/4, x=2] [L33] COND TRUE counter++<2 [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 48 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2022-11-16 12:32:35,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25e51a8adaedf780ebc17d825bcf8567c6fe26dcb93621320dae5eec1509e5a5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:32:37,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:32:37,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:32:37,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:32:37,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:32:37,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:32:37,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:32:37,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:32:37,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:32:37,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:32:37,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:32:37,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:32:37,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:32:37,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:32:37,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:32:37,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:32:37,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:32:37,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:32:37,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:32:37,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:32:37,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:32:37,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:32:37,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:32:37,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:32:37,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:32:37,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:32:37,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:32:37,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:32:37,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:32:37,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:32:37,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:32:37,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:32:37,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:32:37,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:32:37,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:32:37,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:32:37,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:32:37,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:32:37,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:32:37,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:32:37,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:32:37,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:32:37,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:32:37,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:32:37,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:32:37,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:32:37,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:32:37,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:32:37,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:32:37,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:32:37,681 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:32:37,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:32:37,681 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:32:37,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:32:37,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:32:37,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:32:37,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:32:37,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:32:37,682 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:32:37,683 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:32:37,684 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:32:37,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:32:37,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:32:37,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:32:37,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:32:37,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:32:37,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:32:37,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:32:37,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:37,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:32:37,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:32:37,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:32:37,689 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:32:37,689 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:32:37,689 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:32:37,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:32:37,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:32:37,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:32:37,691 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_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25e51a8adaedf780ebc17d825bcf8567c6fe26dcb93621320dae5eec1509e5a5 [2022-11-16 12:32:38,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:32:38,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:32:38,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:32:38,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:32:38,135 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:32:38,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2022-11-16 12:32:38,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/0dca38db8/943ec5a26d074347a97074240d3d8c0b/FLAG7d8164702 [2022-11-16 12:32:38,706 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:32:38,706 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2022-11-16 12:32:38,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/0dca38db8/943ec5a26d074347a97074240d3d8c0b/FLAG7d8164702 [2022-11-16 12:32:39,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/data/0dca38db8/943ec5a26d074347a97074240d3d8c0b [2022-11-16 12:32:39,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:32:39,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:32:39,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:39,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:32:39,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:32:39,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d15177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39, skipping insertion in model container [2022-11-16 12:32:39,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:32:39,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:32:39,252 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2022-11-16 12:32:39,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:39,288 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:32:39,301 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2022-11-16 12:32:39,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:39,326 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:32:39,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39 WrapperNode [2022-11-16 12:32:39,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:39,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:39,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:32:39,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:32:39,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,387 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-16 12:32:39,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:39,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:32:39,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:32:39,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:32:39,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:32:39,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:32:39,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:32:39,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:32:39,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (1/1) ... [2022-11-16 12:32:39,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:39,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:39,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:32:39,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:32:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:32:39,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:32:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:32:39,650 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:32:39,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:32:41,905 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:32:41,924 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:32:41,925 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:32:41,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:41 BoogieIcfgContainer [2022-11-16 12:32:41,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:32:41,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:32:41,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:32:41,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:32:41,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:32:39" (1/3) ... [2022-11-16 12:32:41,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c83456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:41, skipping insertion in model container [2022-11-16 12:32:41,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:39" (2/3) ... [2022-11-16 12:32:41,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c83456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:41, skipping insertion in model container [2022-11-16 12:32:41,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:41" (3/3) ... [2022-11-16 12:32:41,942 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound2.c [2022-11-16 12:32:41,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:32:41,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:32:42,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:32:42,039 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7271f864, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:32:42,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:32:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:32:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:32:42,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:42,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:42,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:42,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:42,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2022-11-16 12:32:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:42,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873859265] [2022-11-16 12:32:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:42,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:42,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:42,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:42,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:32:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:42,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:32:42,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:42,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:42,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:42,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873859265] [2022-11-16 12:32:42,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873859265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:42,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:42,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128580083] [2022-11-16 12:32:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:42,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:32:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:42,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:32:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:32:42,410 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:42,447 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2022-11-16 12:32:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:32:42,449 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 12:32:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:42,458 INFO L225 Difference]: With dead ends: 40 [2022-11-16 12:32:42,459 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 12:32:42,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:32:42,469 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:42,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:32:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 12:32:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 12:32:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:32:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-11-16 12:32:42,516 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2022-11-16 12:32:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:42,517 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-16 12:32:42,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2022-11-16 12:32:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:32:42,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:42,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:42,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:42,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:42,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2022-11-16 12:32:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:42,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821462359] [2022-11-16 12:32:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:42,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:42,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:42,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:42,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:32:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:42,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:32:42,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:43,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:43,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:43,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821462359] [2022-11-16 12:32:43,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821462359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:43,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:43,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:32:43,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793788826] [2022-11-16 12:32:43,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:43,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:43,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:43,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:43,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:43,010 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:43,070 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-11-16 12:32:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:43,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 12:32:43,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:43,076 INFO L225 Difference]: With dead ends: 28 [2022-11-16 12:32:43,076 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:32:43,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:43,078 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:43,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:32:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:32:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 12:32:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:32:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-16 12:32:43,091 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2022-11-16 12:32:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:43,092 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-16 12:32:43,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-16 12:32:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:32:43,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:43,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:43,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:43,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:43,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2022-11-16 12:32:43,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:43,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191176244] [2022-11-16 12:32:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:43,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:43,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:43,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:32:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:32:43,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:32:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:32:43,574 ERROR L250 FreeRefinementEngine]: Caught unknown exception: Invalid model [2022-11-16 12:32:43,574 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 12:32:43,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:43,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:43,775 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Invalid model at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseGetValueResult(Executor.java:275) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.getValue(Scriptor.java:188) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getValue(WrapperScript.java:193) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getValue(WrapperScript.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.getValues(SmtUtils.java:2254) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.getValue(TraceCheck.java:443) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.lambda$0(TraceCheck.java:417) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:429) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:361) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:226) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 12:32:43,778 INFO L158 Benchmark]: Toolchain (without parser) took 4703.22ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 44.1MB in the end (delta: 9.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-11-16 12:32:43,778 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 71.3MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:43,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.39ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 41.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:32:43,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.10ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 40.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:43,780 INFO L158 Benchmark]: Boogie Preprocessor took 57.22ms. Allocated memory is still 71.3MB. Free memory was 40.0MB in the beginning and 38.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:43,780 INFO L158 Benchmark]: RCFGBuilder took 2479.83ms. Allocated memory is still 71.3MB. Free memory was 38.6MB in the beginning and 47.5MB in the end (delta: -8.9MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-16 12:32:43,781 INFO L158 Benchmark]: TraceAbstraction took 1847.04ms. Allocated memory is still 71.3MB. Free memory was 47.1MB in the beginning and 44.1MB in the end (delta: 3.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-11-16 12:32:43,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 71.3MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.39ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 41.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.10ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 40.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.22ms. Allocated memory is still 71.3MB. Free memory was 40.0MB in the beginning and 38.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2479.83ms. Allocated memory is still 71.3MB. Free memory was 38.6MB in the beginning and 47.5MB in the end (delta: -8.9MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1847.04ms. Allocated memory is still 71.3MB. Free memory was 47.1MB in the beginning and 44.1MB in the end (delta: 3.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Invalid model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Invalid model: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 12:32:43,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57320d13-966b-4dd6-b1b0-b26ac6d32fe9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: Invalid model