./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop2-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash d5e9c165e89269546f0dd538fe4c141181dbba699ba59fd34d84328d978738d4 --- 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-5e519f3 [2022-11-02 21:09:04,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:04,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:04,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:04,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:04,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:04,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:04,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:04,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:04,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:04,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:04,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:04,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:04,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:04,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:04,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:04,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:04,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:04,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:04,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:04,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:04,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:04,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:04,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:04,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:04,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:04,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:04,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:04,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:04,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:04,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:04,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:04,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:04,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:04,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:04,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:04,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:04,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:04,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:04,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:04,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:04,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:09:04,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:04,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:04,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:04,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:04,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:09:04,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:09:04,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:04,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:04,680 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:04,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:04,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:04,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:04,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:09:04,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:09:04,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:09:04,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:04,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:04,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:09:04,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:04,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:04,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:09:04,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:04,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:04,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:09:04,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:09:04,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:04,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:09:04,685 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:09:04,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:09:04,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:09:04,686 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_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5e9c165e89269546f0dd538fe4c141181dbba699ba59fd34d84328d978738d4 [2022-11-02 21:09:04,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:09:05,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:09:05,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:09:05,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:09:05,020 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:09:05,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop2-back-serstep.c [2022-11-02 21:09:05,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/data/e4e7c9868/6a984d7a317b47eda31b4f99f375eb1e/FLAG4be64202e [2022-11-02 21:09:05,863 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:09:05,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop2-back-serstep.c [2022-11-02 21:09:05,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/data/e4e7c9868/6a984d7a317b47eda31b4f99f375eb1e/FLAG4be64202e [2022-11-02 21:09:06,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/data/e4e7c9868/6a984d7a317b47eda31b4f99f375eb1e [2022-11-02 21:09:06,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:09:06,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:09:06,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:06,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:09:06,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:09:06,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:06" (1/1) ... [2022-11-02 21:09:06,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9807c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:06, skipping insertion in model container [2022-11-02 21:09:06,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:06" (1/1) ... [2022-11-02 21:09:06,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:09:06,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:09:06,363 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_6add3e59-17ce-4281-af87-29963e6dc1ff/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop2-back-serstep.c[1014,1027] [2022-11-02 21:09:07,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:07,005 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:09:07,018 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_6add3e59-17ce-4281-af87-29963e6dc1ff/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.1.prop2-back-serstep.c[1014,1027] [2022-11-02 21:09:07,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:07,238 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:09:07,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07 WrapperNode [2022-11-02 21:09:07,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:07,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:07,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:09:07,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:09:07,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:07,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:07,959 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3231 [2022-11-02 21:09:07,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:07,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:09:07,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:09:07,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:09:07,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:07,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:09:08,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:09:08,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:09:08,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:09:08,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (1/1) ... [2022-11-02 21:09:08,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:08,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:08,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:08,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:09:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:09:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:09:09,482 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:09:09,515 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:46,707 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:46,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:46,719 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:10:46,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:46 BoogieIcfgContainer [2022-11-02 21:10:46,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:46,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:46,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:46,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:46,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:06" (1/3) ... [2022-11-02 21:10:46,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:46, skipping insertion in model container [2022-11-02 21:10:46,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:07" (2/3) ... [2022-11-02 21:10:46,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:46, skipping insertion in model container [2022-11-02 21:10:46,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:46" (3/3) ... [2022-11-02 21:10:46,734 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.1.prop2-back-serstep.c [2022-11-02 21:10:46,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:46,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:10:46,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:46,855 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;@4f48c57a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:46,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:10:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 167 states have (on average 1.4970059880239521) internal successors, (250), 168 states have internal predecessors, (250), 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) [2022-11-02 21:10:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:10:46,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:46,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:10:46,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:46,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:46,882 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:10:46,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:46,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518053704] [2022-11-02 21:10:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518053704] [2022-11-02 21:10:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518053704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:59,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:59,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:10:59,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269445647] [2022-11-02 21:10:59,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:59,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:10:59,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:00,020 INFO L87 Difference]: Start difference. First operand has 169 states, 167 states have (on average 1.4970059880239521) internal successors, (250), 168 states have internal predecessors, (250), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 21:11:02,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:11:04,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:11:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:05,298 INFO L93 Difference]: Finished difference Result 334 states and 500 transitions. [2022-11-02 21:11:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-02 21:11:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:05,317 INFO L225 Difference]: With dead ends: 334 [2022-11-02 21:11:05,318 INFO L226 Difference]: Without dead ends: 167 [2022-11-02 21:11:05,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:05,326 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 239 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:05,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 485 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:11:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-02 21:11:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-02 21:11:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4819277108433735) internal successors, (246), 166 states have internal predecessors, (246), 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) [2022-11-02 21:11:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 246 transitions. [2022-11-02 21:11:05,382 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 246 transitions. Word has length 5 [2022-11-02 21:11:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:05,382 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 246 transitions. [2022-11-02 21:11:05,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 21:11:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 246 transitions. [2022-11-02 21:11:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:11:05,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:05,399 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:05,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:05,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash 535881979, now seen corresponding path program 1 times [2022-11-02 21:11:05,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:05,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797692313] [2022-11-02 21:11:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:05,974 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:11:05,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280991331] [2022-11-02 21:11:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:05,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:05,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:05,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:05,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:12:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:56,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 5486 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:12:56,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:58,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:58,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:58,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797692313] [2022-11-02 21:12:58,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:12:58,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280991331] [2022-11-02 21:12:58,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280991331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:58,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:58,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:12:58,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963978355] [2022-11-02 21:12:58,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:58,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:58,015 INFO L87 Difference]: Start difference. First operand 167 states and 246 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2022-11-02 21:13:00,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:00,985 INFO L93 Difference]: Finished difference Result 650 states and 965 transitions. [2022-11-02 21:13:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:13:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 166 [2022-11-02 21:13:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:00,990 INFO L225 Difference]: With dead ends: 650 [2022-11-02 21:13:00,990 INFO L226 Difference]: Without dead ends: 487 [2022-11-02 21:13:00,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:13:00,993 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 478 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:00,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1197 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 21:13:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-02 21:13:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 325. [2022-11-02 21:13:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.4876543209876543) internal successors, (482), 324 states have internal predecessors, (482), 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) [2022-11-02 21:13:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 482 transitions. [2022-11-02 21:13:01,026 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 482 transitions. Word has length 166 [2022-11-02 21:13:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:01,027 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 482 transitions. [2022-11-02 21:13:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2022-11-02 21:13:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 482 transitions. [2022-11-02 21:13:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:13:01,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:01,034 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:01,254 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2022-11-02 21:13:01,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137 [2022-11-02 21:13:01,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:01,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash 537729021, now seen corresponding path program 1 times [2022-11-02 21:13:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:01,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744648463] [2022-11-02 21:13:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:01,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:13:01,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122975977] [2022-11-02 21:13:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:01,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:01,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:13:01,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:13:01,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6add3e59-17ce-4281-af87-29963e6dc1ff/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process