./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqm-iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqm-iff.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0 --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 afabd041c1f9e44fb1eb4b2a4796412ceecc4ddc5ece54973c70db8b2f8169c2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:29:12,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:29:12,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:29:12,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:29:12,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:29:12,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:29:12,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:29:12,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:29:12,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:29:12,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:29:12,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:29:12,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:29:12,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:29:12,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:29:12,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:29:12,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:29:12,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:29:12,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:29:12,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:29:12,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:29:12,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:29:12,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:29:12,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:29:12,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:29:12,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:29:12,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:29:12,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:29:12,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:29:12,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:29:12,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:29:12,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:29:12,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:29:12,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:29:12,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:29:12,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:29:12,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:29:12,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:29:12,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:29:12,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:29:12,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:29:12,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:29:12,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:29:12,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:29:12,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:29:13,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:29:13,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:29:13,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:29:13,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:29:13,010 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:29:13,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:29:13,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:29:13,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:29:13,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:29:13,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:29:13,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:29:13,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:29:13,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:29:13,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:29:13,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:29:13,012 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:29:13,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:29:13,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:29:13,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:29:13,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:29:13,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:29:13,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:29:13,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:29:13,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:29:13,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:29:13,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:29:13,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:29:13,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:29:13,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:29:13,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:29:13,016 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_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afabd041c1f9e44fb1eb4b2a4796412ceecc4ddc5ece54973c70db8b2f8169c2 [2021-11-22 15:29:13,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:29:13,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:29:13,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:29:13,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:29:13,357 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:29:13,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-fpi/nsqm-iff.c [2021-11-22 15:29:13,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/data/f3086c361/ebca9fb0c948451fb8aa0a73896ede2e/FLAG9c44fc2c6 [2021-11-22 15:29:13,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:29:13,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/sv-benchmarks/c/array-fpi/nsqm-iff.c [2021-11-22 15:29:13,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/data/f3086c361/ebca9fb0c948451fb8aa0a73896ede2e/FLAG9c44fc2c6 [2021-11-22 15:29:14,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/data/f3086c361/ebca9fb0c948451fb8aa0a73896ede2e [2021-11-22 15:29:14,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:29:14,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:29:14,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:14,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:29:14,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:29:14,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af9ccce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14, skipping insertion in model container [2021-11-22 15:29:14,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:29:14,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:29:14,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/sv-benchmarks/c/array-fpi/nsqm-iff.c[591,604] [2021-11-22 15:29:14,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:14,577 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:29:14,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/sv-benchmarks/c/array-fpi/nsqm-iff.c[591,604] [2021-11-22 15:29:14,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:14,616 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:29:14,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14 WrapperNode [2021-11-22 15:29:14,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:14,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:29:14,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:29:14,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:29:14,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,660 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-22 15:29:14,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:29:14,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:29:14,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:29:14,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:29:14,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:29:14,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:29:14,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:29:14,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:29:14,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (1/1) ... [2021-11-22 15:29:14,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:29:14,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:14,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:14,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:29:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:29:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:29:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:29:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:29:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:29:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:29:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:29:14,887 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:29:14,889 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:29:15,175 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:29:15,182 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:29:15,183 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 15:29:15,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:15 BoogieIcfgContainer [2021-11-22 15:29:15,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:29:15,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:29:15,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:29:15,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:29:15,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:29:14" (1/3) ... [2021-11-22 15:29:15,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609726e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:29:15, skipping insertion in model container [2021-11-22 15:29:15,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:14" (2/3) ... [2021-11-22 15:29:15,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609726e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:29:15, skipping insertion in model container [2021-11-22 15:29:15,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:15" (3/3) ... [2021-11-22 15:29:15,196 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqm-iff.c [2021-11-22 15:29:15,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:29:15,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:29:15,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:29:15,263 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:29:15,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:29:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:29:15,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:15,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:15,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:29:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-11-22 15:29:15,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:15,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910224326] [2021-11-22 15:29:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:15,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:15,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:15,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910224326] [2021-11-22 15:29:15,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910224326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:15,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:15,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:29:15,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897339504] [2021-11-22 15:29:15,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:15,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:29:15,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:29:15,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:29:15,579 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:15,602 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-11-22 15:29:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:29:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 15:29:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:15,615 INFO L225 Difference]: With dead ends: 42 [2021-11-22 15:29:15,617 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 15:29:15,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:29:15,630 INFO L933 BasicCegarLoop]: 28 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, 28 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 [2021-11-22 15:29:15,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 15:29:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-22 15:29:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-22 15:29:15,691 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-11-22 15:29:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:15,691 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-22 15:29:15,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-22 15:29:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:29:15,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:15,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:15,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:29:15,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:29:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-11-22 15:29:15,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:15,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344979702] [2021-11-22 15:29:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:15,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:15,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:15,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344979702] [2021-11-22 15:29:15,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344979702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:15,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:15,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:15,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269215249] [2021-11-22 15:29:15,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:15,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:29:15,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:15,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:15,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:15,817 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:15,878 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-11-22 15:29:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:29:15,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 15:29:15,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:15,880 INFO L225 Difference]: With dead ends: 45 [2021-11-22 15:29:15,880 INFO L226 Difference]: Without dead ends: 31 [2021-11-22 15:29:15,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:15,883 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:15,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:29:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-22 15:29:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-22 15:29:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-22 15:29:15,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-11-22 15:29:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:15,892 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-22 15:29:15,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:29:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-22 15:29:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 15:29:15,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:15,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:15,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:29:15,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:29:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-11-22 15:29:15,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402133638] [2021-11-22 15:29:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:15,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:15,921 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:29:15,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443883149] [2021-11-22 15:29:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:15,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:29:15,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:15,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:29:15,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:29:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:16,024 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:16,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:16,099 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:29:16,100 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 15:29:16,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:16,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:29:16,332 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-22 15:29:16,336 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:29:16,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:29:16 BoogieIcfgContainer [2021-11-22 15:29:16,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:29:16,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:29:16,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:29:16,405 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:29:16,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:15" (3/4) ... [2021-11-22 15:29:16,407 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 15:29:16,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a636db-ede1-4e1a-b430-c1d95669cc96/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:29:16,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:29:16,480 INFO L158 Benchmark]: Toolchain (without parser) took 2168.24ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.5MB in the beginning and 49.7MB in the end (delta: -4.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-11-22 15:29:16,481 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:29:16,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.49ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.4MB in the beginning and 74.7MB in the end (delta: -29.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-11-22 15:29:16,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.67ms. Allocated memory is still 98.6MB. Free memory was 74.7MB in the beginning and 73.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:29:16,483 INFO L158 Benchmark]: Boogie Preprocessor took 30.20ms. Allocated memory is still 98.6MB. Free memory was 73.2MB in the beginning and 72.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:29:16,483 INFO L158 Benchmark]: RCFGBuilder took 493.12ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 61.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:29:16,484 INFO L158 Benchmark]: TraceAbstraction took 1212.97ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 52.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:29:16,484 INFO L158 Benchmark]: Witness Printer took 75.65ms. Allocated memory is still 98.6MB. Free memory was 52.2MB in the beginning and 49.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:29:16,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.49ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.4MB in the beginning and 74.7MB in the end (delta: -29.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.67ms. Allocated memory is still 98.6MB. Free memory was 74.7MB in the beginning and 73.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.20ms. Allocated memory is still 98.6MB. Free memory was 73.2MB in the beginning and 72.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.12ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 61.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1212.97ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 52.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 75.65ms. Allocated memory is still 98.6MB. Free memory was 52.2MB in the beginning and 49.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [a={-1:0}, b={4:0}, i=0, N=1] [L31] COND TRUE i