./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-005.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-005.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3 --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 cb28031a68e9901575d70de4181d02d22e8fd5c4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:21:34,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:21:34,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:21:34,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:21:34,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:21:34,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:21:34,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:21:34,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:21:34,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:21:34,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:21:34,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:21:34,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:21:34,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:21:34,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:21:34,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:21:34,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:21:34,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:21:34,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:21:34,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:21:34,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:21:34,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:21:34,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:21:34,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:21:34,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:21:34,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:21:34,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:21:34,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:21:34,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:21:34,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:21:34,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:21:34,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:21:34,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:21:34,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:21:34,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:21:34,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:21:34,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:21:34,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:21:34,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:21:34,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:21:34,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:21:34,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:21:34,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:21:34,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:21:34,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:21:34,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:21:34,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:21:34,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:21:34,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:21:34,881 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:21:34,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:21:34,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:21:34,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:21:34,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:21:34,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:21:34,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:21:34,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:21:34,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:21:34,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:21:34,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:21:34,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:21:34,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:21:34,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:21:34,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:21:34,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:21:34,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:34,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:21:34,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:21:34,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:21:34,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:21:34,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:21:34,888 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:21:34,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:21:34,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:21:34,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:21:34,891 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_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb28031a68e9901575d70de4181d02d22e8fd5c4 [2021-10-15 19:21:35,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:21:35,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:21:35,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:21:35,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:21:35,247 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:21:35,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/xcsp/AllInterval-005.c [2021-10-15 19:21:35,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/data/deed3cc02/981f2c14e7ef4b0dba4f875b52598eb1/FLAGe5a1c9210 [2021-10-15 19:21:35,872 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:21:35,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/sv-benchmarks/c/xcsp/AllInterval-005.c [2021-10-15 19:21:35,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/data/deed3cc02/981f2c14e7ef4b0dba4f875b52598eb1/FLAGe5a1c9210 [2021-10-15 19:21:36,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/data/deed3cc02/981f2c14e7ef4b0dba4f875b52598eb1 [2021-10-15 19:21:36,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:21:36,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:21:36,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:36,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:21:36,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:21:36,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1deeab08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36, skipping insertion in model container [2021-10-15 19:21:36,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:21:36,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:21:36,557 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/sv-benchmarks/c/xcsp/AllInterval-005.c[2566,2579] [2021-10-15 19:21:36,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:36,570 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:21:36,597 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/sv-benchmarks/c/xcsp/AllInterval-005.c[2566,2579] [2021-10-15 19:21:36,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:36,613 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:21:36,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36 WrapperNode [2021-10-15 19:21:36,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:36,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:36,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:21:36,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:21:36,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:36,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:21:36,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:21:36,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:21:36,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:21:36,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:21:36,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:21:36,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:21:36,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:21:36,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:21:36,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:21:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:21:36,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:21:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:21:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:21:37,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:21:37,407 INFO L299 CfgBuilder]: Removed 80 assume(true) statements. [2021-10-15 19:21:37,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:37 BoogieIcfgContainer [2021-10-15 19:21:37,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:21:37,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:21:37,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:21:37,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:21:37,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:21:36" (1/3) ... [2021-10-15 19:21:37,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da38474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:37, skipping insertion in model container [2021-10-15 19:21:37,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (2/3) ... [2021-10-15 19:21:37,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da38474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:37, skipping insertion in model container [2021-10-15 19:21:37,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:37" (3/3) ... [2021-10-15 19:21:37,420 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-005.c [2021-10-15 19:21:37,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:21:37,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:21:37,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:21:37,494 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, mConcurrency=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 [2021-10-15 19:21:37,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:21:37,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 131 transitions, 262 flow [2021-10-15 19:21:37,660 INFO L129 PetriNetUnfolder]: 42/131 cut-off events. [2021-10-15 19:21:37,660 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:37,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 131 events. 42/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 43 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:21:37,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 131 transitions, 262 flow [2021-10-15 19:21:37,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 128 transitions, 256 flow [2021-10-15 19:21:37,710 INFO L129 PetriNetUnfolder]: 42/127 cut-off events. [2021-10-15 19:21:37,711 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:37,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:37,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:37,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:37,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash 832724005, now seen corresponding path program 1 times [2021-10-15 19:21:37,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:37,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057365384] [2021-10-15 19:21:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:37,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:37,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:21:37,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057365384] [2021-10-15 19:21:37,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057365384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:37,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:37,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:21:37,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840329164] [2021-10-15 19:21:37,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:21:37,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:21:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:21:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:21:37,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 131 [2021-10-15 19:21:37,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 128 transitions, 256 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2021-10-15 19:21:37,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:37,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 131 [2021-10-15 19:21:37,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:38,005 INFO L129 PetriNetUnfolder]: 4/90 cut-off events. [2021-10-15 19:21:38,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:38,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 90 events. 4/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 4 event pairs, 0 based on Foata normal form. 38/124 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2021-10-15 19:21:38,008 INFO L132 encePairwiseOnDemand]: 93/131 looper letters, 0 selfloop transitions, 0 changer transitions 0/90 dead transitions. [2021-10-15 19:21:38,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 180 flow [2021-10-15 19:21:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:21:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:21:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 222 transitions. [2021-10-15 19:21:38,025 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473282442748091 [2021-10-15 19:21:38,025 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 222 transitions. [2021-10-15 19:21:38,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 222 transitions. [2021-10-15 19:21:38,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:38,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 222 transitions. [2021-10-15 19:21:38,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2021-10-15 19:21:38,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2021-10-15 19:21:38,043 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2021-10-15 19:21:38,046 INFO L186 Difference]: Start difference. First operand has 87 places, 128 transitions, 256 flow. Second operand 2 states and 222 transitions. [2021-10-15 19:21:38,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 180 flow [2021-10-15 19:21:38,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:21:38,055 INFO L242 Difference]: Finished difference. Result has 88 places, 90 transitions, 180 flow [2021-10-15 19:21:38,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=180, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2021-10-15 19:21:38,058 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2021-10-15 19:21:38,059 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 180 flow [2021-10-15 19:21:38,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2021-10-15 19:21:38,060 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:38,060 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:38,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:21:38,061 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:38,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:38,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1052320961, now seen corresponding path program 1 times [2021-10-15 19:21:38,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:38,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635521979] [2021-10-15 19:21:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:38,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:40,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:21:40,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635521979] [2021-10-15 19:21:40,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635521979] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:40,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:40,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-10-15 19:21:40,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385299502] [2021-10-15 19:21:40,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-15 19:21:40,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:21:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-15 19:21:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-10-15 19:21:40,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 131 [2021-10-15 19:21:40,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 180 flow. Second operand has 29 states, 29 states have (on average 6.896551724137931) internal successors, (200), 29 states have internal predecessors, (200), 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) [2021-10-15 19:21:40,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:40,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 131 [2021-10-15 19:21:40,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:44,551 INFO L129 PetriNetUnfolder]: 6/136 cut-off events. [2021-10-15 19:21:44,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:44,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 136 events. 6/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 184 event pairs, 0 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 267. Up to 24 conditions per place. [2021-10-15 19:21:44,554 INFO L132 encePairwiseOnDemand]: 99/131 looper letters, 88 selfloop transitions, 41 changer transitions 2/133 dead transitions. [2021-10-15 19:21:44,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 133 transitions, 528 flow [2021-10-15 19:21:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-15 19:21:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-15 19:21:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 256 transitions. [2021-10-15 19:21:44,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.0630386604284659 [2021-10-15 19:21:44,562 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 256 transitions. [2021-10-15 19:21:44,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 256 transitions. [2021-10-15 19:21:44,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:44,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 256 transitions. [2021-10-15 19:21:44,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 8.258064516129032) internal successors, (256), 31 states have internal predecessors, (256), 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) [2021-10-15 19:21:44,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 131.0) internal successors, (4192), 32 states have internal predecessors, (4192), 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) [2021-10-15 19:21:44,582 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 131.0) internal successors, (4192), 32 states have internal predecessors, (4192), 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) [2021-10-15 19:21:44,582 INFO L186 Difference]: Start difference. First operand has 88 places, 90 transitions, 180 flow. Second operand 31 states and 256 transitions. [2021-10-15 19:21:44,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 133 transitions, 528 flow [2021-10-15 19:21:44,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 133 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:21:44,590 INFO L242 Difference]: Finished difference. Result has 128 places, 114 transitions, 380 flow [2021-10-15 19:21:44,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=380, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2021-10-15 19:21:44,591 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 41 predicate places. [2021-10-15 19:21:44,592 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 380 flow [2021-10-15 19:21:44,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.896551724137931) internal successors, (200), 29 states have internal predecessors, (200), 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) [2021-10-15 19:21:44,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:44,593 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:44,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:21:44,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1052261379, now seen corresponding path program 1 times [2021-10-15 19:21:44,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:44,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613579623] [2021-10-15 19:21:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:44,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:48,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:21:48,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613579623] [2021-10-15 19:21:48,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613579623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:48,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:48,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-10-15 19:21:48,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171352937] [2021-10-15 19:21:48,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-15 19:21:48,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:21:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-15 19:21:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2021-10-15 19:21:48,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 131 [2021-10-15 19:21:48,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 380 flow. Second operand has 32 states, 32 states have (on average 6.625) internal successors, (212), 32 states have internal predecessors, (212), 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) [2021-10-15 19:21:48,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:48,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 131 [2021-10-15 19:21:48,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:53,941 INFO L129 PetriNetUnfolder]: 6/128 cut-off events. [2021-10-15 19:21:53,942 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-10-15 19:21:53,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 128 events. 6/128 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 339. Up to 23 conditions per place. [2021-10-15 19:21:53,945 INFO L132 encePairwiseOnDemand]: 98/131 looper letters, 79 selfloop transitions, 43 changer transitions 2/126 dead transitions. [2021-10-15 19:21:53,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 126 transitions, 674 flow [2021-10-15 19:21:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-15 19:21:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-15 19:21:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 265 transitions. [2021-10-15 19:21:53,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.05779716466739367 [2021-10-15 19:21:53,952 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 265 transitions. [2021-10-15 19:21:53,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 265 transitions. [2021-10-15 19:21:53,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:53,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 265 transitions. [2021-10-15 19:21:53,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 7.571428571428571) internal successors, (265), 35 states have internal predecessors, (265), 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) [2021-10-15 19:21:53,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 131.0) internal successors, (4716), 36 states have internal predecessors, (4716), 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) [2021-10-15 19:21:53,969 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 131.0) internal successors, (4716), 36 states have internal predecessors, (4716), 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) [2021-10-15 19:21:53,969 INFO L186 Difference]: Start difference. First operand has 128 places, 114 transitions, 380 flow. Second operand 35 states and 265 transitions. [2021-10-15 19:21:53,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 126 transitions, 674 flow [2021-10-15 19:21:53,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 126 transitions, 621 flow, removed 9 selfloop flow, removed 19 redundant places. [2021-10-15 19:21:53,980 INFO L242 Difference]: Finished difference. Result has 144 places, 112 transitions, 424 flow [2021-10-15 19:21:53,981 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=424, PETRI_PLACES=144, PETRI_TRANSITIONS=112} [2021-10-15 19:21:53,981 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 57 predicate places. [2021-10-15 19:21:53,982 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 112 transitions, 424 flow [2021-10-15 19:21:53,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.625) internal successors, (212), 32 states have internal predecessors, (212), 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) [2021-10-15 19:21:53,982 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:53,983 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:53,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:21:53,983 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:53,984 INFO L82 PathProgramCache]: Analyzing trace with hash -794155523, now seen corresponding path program 1 times [2021-10-15 19:21:53,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:53,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030941663] [2021-10-15 19:21:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:53,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:21:54,159 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:21:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:21:54,282 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:21:54,283 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:21:54,284 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:21:54,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:21:54,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:21:54,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:21:54 BoogieIcfgContainer [2021-10-15 19:21:54,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:21:54,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:21:54,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:21:54,362 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:21:54,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:37" (3/4) ... [2021-10-15 19:21:54,364 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:21:54,443 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:21:54,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:21:54,449 INFO L168 Benchmark]: Toolchain (without parser) took 18225.06 ms. Allocated memory was 98.6 MB in the beginning and 167.8 MB in the end (delta: 69.2 MB). Free memory was 64.8 MB in the beginning and 67.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:54,450 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 52.2 MB in the beginning and 52.1 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:54,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.25 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 72.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:54,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.47 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 69.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:54,455 INFO L168 Benchmark]: Boogie Preprocessor took 38.13 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 68.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:54,455 INFO L168 Benchmark]: RCFGBuilder took 702.70 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 53.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:54,456 INFO L168 Benchmark]: TraceAbstraction took 16948.76 ms. Allocated memory was 98.6 MB in the beginning and 167.8 MB in the end (delta: 69.2 MB). Free memory was 53.0 MB in the beginning and 72.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:54,456 INFO L168 Benchmark]: Witness Printer took 86.29 ms. Allocated memory is still 167.8 MB. Free memory was 72.9 MB in the beginning and 67.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:54,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 52.2 MB in the beginning and 52.1 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.25 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 72.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.47 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 69.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.13 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 68.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 702.70 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 53.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16948.76 ms. Allocated memory was 98.6 MB in the beginning and 167.8 MB in the end (delta: 69.2 MB). Free memory was 53.0 MB in the beginning and 72.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. * Witness Printer took 86.29 ms. Allocated memory is still 167.8 MB. Free memory was 72.9 MB in the beginning and 67.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 93]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int cond0; [L25] int dummy = 0; [L26] int N; [L27] int var0; [L28] var0 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L31] int var1; [L32] var1 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L35] int var2; [L36] var2 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L39] int var3; [L40] var3 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L43] int var4; [L44] var4 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L47] int var5; [L48] var5 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L51] int var6; [L52] var6 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L55] int var7; [L56] var7 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L59] int var8; [L60] var8 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L63] int myvar0 = 1; [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L80] int var_for_abs; [L81] var_for_abs = var0 - var1 [L82] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L82] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L84] var_for_abs = var1 - var2 [L85] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L85] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L87] var_for_abs = var2 - var3 [L88] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L88] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L90] var_for_abs = var3 - var4 [L91] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L91] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 35.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16815.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 10085.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 180.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 105 SDtfs, 1687 SDslu, 749 SDs, 0 SdLazy, 1633 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1565.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 10507.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=424occurred in iteration=3, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.0ms SsaConstructionTime, 640.4ms SatisfiabilityAnalysisTime, 5534.9ms InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 6418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 proved your program to be incorrect! [2021-10-15 19:21:54,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce9e8e87-e8b5-471c-81c6-6fb5a074c3f5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...