./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/iftelse.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/iftelse.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ --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 a98f1431f10d7e60a67a648eec648b7f5eb5616fa0d511e794bbda916609379b --- 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-dbf71c6-m [2022-10-17 10:41:47,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:41:47,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:41:47,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:41:47,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:41:47,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:41:47,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:41:47,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:41:47,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:41:47,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:41:47,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:41:47,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:41:47,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:41:47,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:41:47,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:41:47,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:41:47,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:41:47,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:41:47,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:41:47,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:41:47,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:41:47,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:41:47,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:41:47,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:41:47,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:41:47,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:41:47,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:41:47,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:41:47,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:41:47,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:41:47,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:41:47,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:41:47,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:41:47,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:41:47,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:41:47,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:41:47,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:41:47,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:41:47,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:41:47,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:41:47,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:41:47,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:41:47,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:41:47,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:41:47,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:41:47,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:41:47,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:41:47,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:41:47,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:41:47,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:41:47,842 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:41:47,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:41:47,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:41:47,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:41:47,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:41:47,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:41:47,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:41:47,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:41:47,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:41:47,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:41:47,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:41:47,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:41:47,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:41:47,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:41:47,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:41:47,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:41:47,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:41:47,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:41:47,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:41:47,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:41:47,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:41:47,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:41:47,850 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:41:47,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:41:47,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:41:47,850 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_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98f1431f10d7e60a67a648eec648b7f5eb5616fa0d511e794bbda916609379b [2022-10-17 10:41:48,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:41:48,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:41:48,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:41:48,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:41:48,195 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:41:48,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/loops-crafted-1/iftelse.c [2022-10-17 10:41:48,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/data/2140756b9/748d5252bea641e8939aa61db650ff2f/FLAGf053e6508 [2022-10-17 10:41:48,672 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:41:48,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/sv-benchmarks/c/loops-crafted-1/iftelse.c [2022-10-17 10:41:48,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/data/2140756b9/748d5252bea641e8939aa61db650ff2f/FLAGf053e6508 [2022-10-17 10:41:49,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/data/2140756b9/748d5252bea641e8939aa61db650ff2f [2022-10-17 10:41:49,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:41:49,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:41:49,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:41:49,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:41:49,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:41:49,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7108d754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49, skipping insertion in model container [2022-10-17 10:41:49,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:41:49,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:41:49,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/sv-benchmarks/c/loops-crafted-1/iftelse.c[406,419] [2022-10-17 10:41:49,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:41:49,301 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:41:49,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/sv-benchmarks/c/loops-crafted-1/iftelse.c[406,419] [2022-10-17 10:41:49,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:41:49,332 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:41:49,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49 WrapperNode [2022-10-17 10:41:49,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:41:49,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:41:49,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:41:49,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:41:49,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,368 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-10-17 10:41:49,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:41:49,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:41:49,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:41:49,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:41:49,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:41:49,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:41:49,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:41:49,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:41:49,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (1/1) ... [2022-10-17 10:41:49,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:41:49,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:41:49,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:41:49,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:41:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:41:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:41:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:41:49,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:41:49,543 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:41:49,545 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:41:49,673 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:41:49,679 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:41:49,679 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:41:49,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:41:49 BoogieIcfgContainer [2022-10-17 10:41:49,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:41:49,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:41:49,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:41:49,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:41:49,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:41:49" (1/3) ... [2022-10-17 10:41:49,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590650c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:41:49, skipping insertion in model container [2022-10-17 10:41:49,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:49" (2/3) ... [2022-10-17 10:41:49,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590650c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:41:49, skipping insertion in model container [2022-10-17 10:41:49,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:41:49" (3/3) ... [2022-10-17 10:41:49,692 INFO L112 eAbstractionObserver]: Analyzing ICFG iftelse.c [2022-10-17 10:41:49,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:41:49,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:41:49,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:41:49,774 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;@2842d084, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:41:49,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:41:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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) [2022-10-17 10:41:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:41:49,786 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:41:49,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:41:49,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:41:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:41:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash 183324244, now seen corresponding path program 1 times [2022-10-17 10:41:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:41:49,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545351463] [2022-10-17 10:41:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:41:49,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:41:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:41:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:41:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:41:50,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545351463] [2022-10-17 10:41:50,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545351463] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:41:50,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:41:50,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:41:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857498903] [2022-10-17 10:41:50,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:41:50,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:41:50,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:41:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:41:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:41:50,759 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-10-17 10:41:52,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:41:55,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:41:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:41:55,351 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-10-17 10:41:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:41:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2022-10-17 10:41:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:41:55,364 INFO L225 Difference]: With dead ends: 51 [2022-10-17 10:41:55,365 INFO L226 Difference]: Without dead ends: 20 [2022-10-17 10:41:55,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:41:55,372 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:41:55,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 88 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-10-17 10:41:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-17 10:41:55,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2022-10-17 10:41:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-10-17 10:41:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-10-17 10:41:55,407 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2022-10-17 10:41:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:41:55,408 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-10-17 10:41:55,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-10-17 10:41:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-10-17 10:41:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:41:55,409 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:41:55,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:41:55,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:41:55,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:41:55,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:41:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1425053575, now seen corresponding path program 1 times [2022-10-17 10:41:55,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:41:55,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900977567] [2022-10-17 10:41:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:41:55,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:41:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:41:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:41:55,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:41:55,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900977567] [2022-10-17 10:41:55,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900977567] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:41:55,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:41:55,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:41:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381172160] [2022-10-17 10:41:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:41:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:41:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:41:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:41:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:41:55,457 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-17 10:41:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:41:55,473 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-10-17 10:41:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:41:55,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-10-17 10:41:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:41:55,475 INFO L225 Difference]: With dead ends: 22 [2022-10-17 10:41:55,475 INFO L226 Difference]: Without dead ends: 14 [2022-10-17 10:41:55,475 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 [2022-10-17 10:41:55,477 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:41:55,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:41:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-17 10:41:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-17 10:41:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-10-17 10:41:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-10-17 10:41:55,484 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-10-17 10:41:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:41:55,485 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-10-17 10:41:55,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-17 10:41:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-10-17 10:41:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:41:55,486 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:41:55,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:41:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:41:55,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:41:55,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:41:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2117156515, now seen corresponding path program 1 times [2022-10-17 10:41:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:41:55,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406817369] [2022-10-17 10:41:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:41:55,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:41:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:41:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:41:55,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:41:55,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406817369] [2022-10-17 10:41:55,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406817369] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:41:55,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997132524] [2022-10-17 10:41:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:41:55,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:41:55,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:41:55,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:41:55,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9de941f-ea75-4f00-87e6-841959c58401/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process