./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a --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 8b3f0af40c26ea2441fd1db040e489b1eca9157048527a1847377fc5afef038a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:59:37,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:59:37,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:59:37,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:59:37,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:59:37,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:59:37,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:59:37,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:59:37,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:59:37,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:59:37,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:59:37,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:59:37,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:59:37,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:59:37,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:59:37,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:59:37,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:59:37,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:59:37,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:59:37,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:59:37,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:59:37,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:59:37,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:59:37,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:59:37,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:59:37,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:59:37,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:59:37,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:59:37,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:59:37,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:59:37,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:59:37,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:59:37,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:59:37,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:59:37,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:59:37,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:59:37,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:59:37,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:59:37,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:59:37,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:59:37,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:59:37,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:59:37,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:59:37,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:59:37,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:59:37,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:59:37,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:59:37,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:59:37,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:59:37,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:59:37,779 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:59:37,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:59:37,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:59:37,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:59:37,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:59:37,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:59:37,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:59:37,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:59:37,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:59:37,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:59:37,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:59:37,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:59:37,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:59:37,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:59:37,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:59:37,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:59:37,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:59:37,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:59:37,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:59:37,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:59:37,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:59:37,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:59:37,786 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:59:37,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:59:37,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:59:37,786 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_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b3f0af40c26ea2441fd1db040e489b1eca9157048527a1847377fc5afef038a [2022-11-21 16:59:38,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:59:38,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:59:38,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:59:38,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:59:38,152 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:59:38,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2022-11-21 16:59:41,353 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:59:41,631 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:59:41,632 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2022-11-21 16:59:41,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/data/778735211/8d48d51b17ac4814bbe639a300bd1393/FLAGfc681e9f2 [2022-11-21 16:59:41,662 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/data/778735211/8d48d51b17ac4814bbe639a300bd1393 [2022-11-21 16:59:41,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:59:41,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:59:41,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:59:41,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:59:41,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:59:41,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:59:41" (1/1) ... [2022-11-21 16:59:41,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402008fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:41, skipping insertion in model container [2022-11-21 16:59:41,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:59:41" (1/1) ... [2022-11-21 16:59:41,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:59:41,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:59:41,953 WARN L237 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_ccf984af-fad1-443e-b693-73d422bcaffe/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c[319,332] [2022-11-21 16:59:41,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:59:41,986 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:59:42,001 WARN L237 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_ccf984af-fad1-443e-b693-73d422bcaffe/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c[319,332] [2022-11-21 16:59:42,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:59:42,024 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:59:42,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42 WrapperNode [2022-11-21 16:59:42,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:59:42,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:59:42,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:59:42,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:59:42,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,057 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-11-21 16:59:42,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:59:42,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:59:42,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:59:42,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:59:42,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,090 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:59:42,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:59:42,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:59:42,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:59:42,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (1/1) ... [2022-11-21 16:59:42,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:59:42,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:42,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:59:42,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:59:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:59:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:59:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:59:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:59:42,241 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:59:42,244 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:59:42,414 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:59:42,419 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:59:42,420 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:59:42,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:59:42 BoogieIcfgContainer [2022-11-21 16:59:42,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:59:42,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:59:42,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:59:42,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:59:42,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:59:41" (1/3) ... [2022-11-21 16:59:42,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301d2841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:59:42, skipping insertion in model container [2022-11-21 16:59:42,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:59:42" (2/3) ... [2022-11-21 16:59:42,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301d2841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:59:42, skipping insertion in model container [2022-11-21 16:59:42,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:59:42" (3/3) ... [2022-11-21 16:59:42,441 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2022-11-21 16:59:42,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:59:42,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:59:42,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:59:42,552 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2752658f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:59:42,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:59:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:59:42,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:42,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:59:42,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:59:42,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:42,575 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-11-21 16:59:42,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:42,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974264917] [2022-11-21 16:59:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:42,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:42,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974264917] [2022-11-21 16:59:42,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974264917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:42,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:42,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:59:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963075158] [2022-11-21 16:59:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:42,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:59:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:59:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:59:42,825 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:42,847 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-21 16:59:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:59:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-21 16:59:42,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:42,868 INFO L225 Difference]: With dead ends: 21 [2022-11-21 16:59:42,868 INFO L226 Difference]: Without dead ends: 9 [2022-11-21 16:59:42,871 INFO L412 NwaCegarLoop]: 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 [2022-11-21 16:59:42,876 INFO L413 NwaCegarLoop]: 14 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, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:42,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:59:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-21 16:59:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-21 16:59:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-21 16:59:42,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-21 16:59:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:42,917 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-21 16:59:42,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-21 16:59:42,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:59:42,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:42,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:59:42,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:59:42,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:59:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-11-21 16:59:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:42,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933700226] [2022-11-21 16:59:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:42,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:43,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:43,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933700226] [2022-11-21 16:59:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933700226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:43,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:43,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:59:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761923019] [2022-11-21 16:59:43,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:59:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:59:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:59:43,259 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:43,282 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-11-21 16:59:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:59:43,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-21 16:59:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:43,284 INFO L225 Difference]: With dead ends: 19 [2022-11-21 16:59:43,284 INFO L226 Difference]: Without dead ends: 12 [2022-11-21 16:59:43,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:59:43,285 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:43,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:59:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-21 16:59:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-11-21 16:59:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2022-11-21 16:59:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-21 16:59:43,290 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2022-11-21 16:59:43,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:43,291 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-21 16:59:43,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-21 16:59:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 16:59:43,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:43,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:43,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:59:43,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:59:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2022-11-21 16:59:43,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:43,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740777008] [2022-11-21 16:59:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:43,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:43,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:43,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740777008] [2022-11-21 16:59:43,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740777008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:43,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036254847] [2022-11-21 16:59:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:43,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:43,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:43,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:59:43,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:59:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:43,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:59:43,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:59:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:59:43,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:59:43,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036254847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:43,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:59:43,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-21 16:59:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307750782] [2022-11-21 16:59:43,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:59:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:59:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:59:43,759 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:43,797 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-21 16:59:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:59:43,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-21 16:59:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:43,799 INFO L225 Difference]: With dead ends: 18 [2022-11-21 16:59:43,800 INFO L226 Difference]: Without dead ends: 14 [2022-11-21 16:59:43,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:59:43,803 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:43,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:59:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-21 16:59:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-21 16:59:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-21 16:59:43,815 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2022-11-21 16:59:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:43,815 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-21 16:59:43,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-21 16:59:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:59:43,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:43,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:43,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:59:44,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:44,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:59:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2007312204, now seen corresponding path program 1 times [2022-11-21 16:59:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:44,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435084619] [2022-11-21 16:59:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:44,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:44,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435084619] [2022-11-21 16:59:44,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435084619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:44,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204413777] [2022-11-21 16:59:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:44,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:44,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:44,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:59:44,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:59:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:44,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:59:44,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:59:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:44,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:59:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:44,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204413777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:59:44,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:59:44,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-21 16:59:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590833592] [2022-11-21 16:59:44,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:59:44,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:59:44,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:59:44,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:59:44,365 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:44,448 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-21 16:59:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:59:44,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 16:59:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:44,452 INFO L225 Difference]: With dead ends: 31 [2022-11-21 16:59:44,453 INFO L226 Difference]: Without dead ends: 24 [2022-11-21 16:59:44,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:59:44,458 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:44,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:59:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-21 16:59:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-21 16:59:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-21 16:59:44,469 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2022-11-21 16:59:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:44,470 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-21 16:59:44,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-21 16:59:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:59:44,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:44,473 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:44,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:59:44,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:44,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:59:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash -191017413, now seen corresponding path program 2 times [2022-11-21 16:59:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:44,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650542375] [2022-11-21 16:59:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:44,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:44,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650542375] [2022-11-21 16:59:44,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650542375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:44,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480795247] [2022-11-21 16:59:44,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:59:44,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:44,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:45,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:59:45,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:59:45,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:59:45,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:59:45,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:59:45,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:59:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:45,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:59:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:45,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480795247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:59:45,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:59:45,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2022-11-21 16:59:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057577768] [2022-11-21 16:59:45,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:59:45,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:59:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:59:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:59:45,523 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:46,222 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-11-21 16:59:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:59:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-21 16:59:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:46,224 INFO L225 Difference]: With dead ends: 49 [2022-11-21 16:59:46,225 INFO L226 Difference]: Without dead ends: 42 [2022-11-21 16:59:46,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=183, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:59:46,226 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:46,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:59:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-21 16:59:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-11-21 16:59:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-11-21 16:59:46,234 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 21 [2022-11-21 16:59:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:46,235 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-11-21 16:59:46,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-11-21 16:59:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 16:59:46,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:46,237 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:46,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 16:59:46,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:46,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:59:46,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1991122341, now seen corresponding path program 3 times [2022-11-21 16:59:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:46,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068150574] [2022-11-21 16:59:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 21 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:46,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068150574] [2022-11-21 16:59:46,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068150574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:46,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181775516] [2022-11-21 16:59:46,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:59:46,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:46,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:46,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:59:46,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:59:46,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:59:46,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:59:46,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:59:46,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:59:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-21 16:59:47,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:59:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-21 16:59:47,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181775516] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:47,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:59:47,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 5] total 18 [2022-11-21 16:59:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031009433] [2022-11-21 16:59:47,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:47,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:59:47,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:59:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:59:47,305 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:47,336 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2022-11-21 16:59:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:59:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 39 [2022-11-21 16:59:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:47,338 INFO L225 Difference]: With dead ends: 41 [2022-11-21 16:59:47,338 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 16:59:47,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:59:47,339 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:47,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:59:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 16:59:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 16:59:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 16:59:47,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-11-21 16:59:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:47,342 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 16:59:47,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 16:59:47,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 16:59:47,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 16:59:47,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:59:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:47,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 16:59:47,571 INFO L899 garLoopResultBuilder]: For program point L4-3(line 4) no Hoare annotation was computed. [2022-11-21 16:59:47,571 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 16:59:47,571 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-21 16:59:47,571 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2022-11-21 16:59:47,571 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 16:59:47,571 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 16:59:47,572 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 16:59:47,572 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2022-11-21 16:59:47,572 INFO L902 garLoopResultBuilder]: At program point L16(lines 6 17) the Hoare annotation is: true [2022-11-21 16:59:47,572 INFO L895 garLoopResultBuilder]: At program point L10-2(lines 10 14) the Hoare annotation is: (= (mod (mod |ULTIMATE.start_main_~z~0#1| 2) 4294967296) 0) [2022-11-21 16:59:47,572 INFO L899 garLoopResultBuilder]: For program point L10-3(lines 10 14) no Hoare annotation was computed. [2022-11-21 16:59:47,573 INFO L899 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2022-11-21 16:59:47,573 INFO L899 garLoopResultBuilder]: For program point L4-1(line 4) no Hoare annotation was computed. [2022-11-21 16:59:47,576 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-11-21 16:59:47,578 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:59:47,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:59:47 BoogieIcfgContainer [2022-11-21 16:59:47,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:59:47,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:59:47,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:59:47,592 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:59:47,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:59:42" (3/4) ... [2022-11-21 16:59:47,600 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:59:47,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-21 16:59:47,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 16:59:47,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:59:47,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:59:47,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:59:47,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:59:47,645 INFO L158 Benchmark]: Toolchain (without parser) took 5972.04ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 136.8MB in the beginning and 129.0MB in the end (delta: 7.9MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-11-21 16:59:47,645 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:59:47,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.72ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 137.4MB in the end (delta: -1.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-21 16:59:47,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.72ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 136.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:59:47,646 INFO L158 Benchmark]: Boogie Preprocessor took 37.08ms. Allocated memory is still 169.9MB. Free memory was 135.3MB in the beginning and 134.5MB in the end (delta: 802.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:59:47,646 INFO L158 Benchmark]: RCFGBuilder took 325.18ms. Allocated memory is still 169.9MB. Free memory was 134.5MB in the beginning and 124.8MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:59:47,646 INFO L158 Benchmark]: TraceAbstraction took 5167.56ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 124.0MB in the beginning and 132.1MB in the end (delta: -8.1MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2022-11-21 16:59:47,647 INFO L158 Benchmark]: Witness Printer took 51.81ms. Allocated memory is still 205.5MB. Free memory was 132.1MB in the beginning and 129.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:59:47,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.72ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 137.4MB in the end (delta: -1.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.72ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 136.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.08ms. Allocated memory is still 169.9MB. Free memory was 135.3MB in the beginning and 134.5MB in the end (delta: 802.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 325.18ms. Allocated memory is still 169.9MB. Free memory was 134.5MB in the beginning and 124.8MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5167.56ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 124.0MB in the beginning and 132.1MB in the end (delta: -8.1MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Witness Printer took 51.81ms. Allocated memory is still 205.5MB. Free memory was 132.1MB in the beginning and 129.0MB in the end (delta: 3.1MB). 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 - PositiveResult [Line: 4]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 49 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 143 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 15 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 242 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 174 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 233 ConstructedInterpolants, 0 QuantifiedInterpolants, 1201 SizeOfPredicates, 8 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 389/650 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: z % 2 % 4294967296 == 0 RESULT: Ultimate proved your program to be correct! [2022-11-21 16:59:47,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccf984af-fad1-443e-b693-73d422bcaffe/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE