./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2014.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2014.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:32:00,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:32:00,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:32:00,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:32:00,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:32:00,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:32:00,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:32:00,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:32:00,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:32:00,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:32:00,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:32:00,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:32:00,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:32:00,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:32:00,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:32:00,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:32:00,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:32:00,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:32:00,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:32:00,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:32:00,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:32:00,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:32:00,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:32:00,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:32:00,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:32:00,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:32:00,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:32:00,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:32:00,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:32:00,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:32:00,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:32:00,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:32:00,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:32:00,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:32:00,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:32:00,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:32:00,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:32:00,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:32:00,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:32:00,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:32:00,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:32:00,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:32:00,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:32:00,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:32:00,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:32:00,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:32:00,665 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:32:00,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:32:00,666 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:32:00,666 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:32:00,666 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:32:00,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:32:00,667 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:32:00,668 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:32:00,668 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:32:00,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:32:00,669 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:32:00,669 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:32:00,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:32:00,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:32:00,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:32:00,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:32:00,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:32:00,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:32:00,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:32:00,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:32:00,672 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:32:00,673 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:32:00,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:32:00,673 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:32:00,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:32:00,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:32:00,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:32:00,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:00,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:32:00,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:32:00,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:32:00,676 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:32:00,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:32:00,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:32:00,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:32:00,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:32:00,677 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 [2021-11-13 02:32:00,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:32:01,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:32:01,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:32:01,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:32:01,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:32:01,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread-lit/fkp2014.i [2021-11-13 02:32:01,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/data/8be135b25/f9a760a672b147f58561a7aa93729a82/FLAG6a935aac8 [2021-11-13 02:32:01,668 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:32:01,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/sv-benchmarks/c/pthread-lit/fkp2014.i [2021-11-13 02:32:01,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/data/8be135b25/f9a760a672b147f58561a7aa93729a82/FLAG6a935aac8 [2021-11-13 02:32:01,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/data/8be135b25/f9a760a672b147f58561a7aa93729a82 [2021-11-13 02:32:01,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:32:01,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:32:01,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:01,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:32:01,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:32:01,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:01,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1623d987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01, skipping insertion in model container [2021-11-13 02:32:01,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:01,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:32:02,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:02,493 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/sv-benchmarks/c/pthread-lit/fkp2014.i[30003,30016] [2021-11-13 02:32:02,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:02,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:32:02,608 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/sv-benchmarks/c/pthread-lit/fkp2014.i[30003,30016] [2021-11-13 02:32:02,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:02,677 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:32:02,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02 WrapperNode [2021-11-13 02:32:02,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:02,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:02,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:32:02,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:32:02,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:02,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:32:02,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:32:02,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:32:02,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:32:02,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:32:02,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:32:02,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:32:02,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (1/1) ... [2021-11-13 02:32:02,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:02,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:02,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:32:02,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:32:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 02:32:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 02:32:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2021-11-13 02:32:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2021-11-13 02:32:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:32:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:32:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:32:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 02:32:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:32:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:32:02,952 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 02:32:03,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:32:03,367 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:32:03,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:03 BoogieIcfgContainer [2021-11-13 02:32:03,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:32:03,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:32:03,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:32:03,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:32:03,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:32:01" (1/3) ... [2021-11-13 02:32:03,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c63341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:03, skipping insertion in model container [2021-11-13 02:32:03,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:02" (2/3) ... [2021-11-13 02:32:03,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c63341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:03, skipping insertion in model container [2021-11-13 02:32:03,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:03" (3/3) ... [2021-11-13 02:32:03,389 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2014.i [2021-11-13 02:32:03,395 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 02:32:03,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:32:03,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:32:03,397 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 02:32:03,438 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:03,467 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 02:32:03,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:03,541 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:32:03,541 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-13 02:32:03,561 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:32:03,577 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions, 145 flow [2021-11-13 02:32:03,581 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 70 transitions, 145 flow [2021-11-13 02:32:03,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2021-11-13 02:32:03,638 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2021-11-13 02:32:03,639 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 02:32:03,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 82 events. 4/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2021-11-13 02:32:03,646 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-11-13 02:32:06,802 INFO L131 LiptonReduction]: Checked pairs total: 633 [2021-11-13 02:32:06,803 INFO L133 LiptonReduction]: Total number of compositions: 74 [2021-11-13 02:32:06,813 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2021-11-13 02:32:06,824 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-13 02:32:06,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:06,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-13 02:32:06,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:06,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash 8983841, now seen corresponding path program 1 times [2021-11-13 02:32:06,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:06,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869749998] [2021-11-13 02:32:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:06,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:07,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:07,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869749998] [2021-11-13 02:32:07,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869749998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:07,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:07,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-13 02:32:07,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821465780] [2021-11-13 02:32:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:07,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:32:07,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:32:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:32:07,131 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:07,162 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-11-13 02:32:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:32:07,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-13 02:32:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:07,175 INFO L225 Difference]: With dead ends: 12 [2021-11-13 02:32:07,176 INFO L226 Difference]: Without dead ends: 11 [2021-11-13 02:32:07,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:32:07,183 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.01ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:07,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 9 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 12.01ms Time] [2021-11-13 02:32:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-13 02:32:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-13 02:32:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-13 02:32:07,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2021-11-13 02:32:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:07,222 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-13 02:32:07,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-13 02:32:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 02:32:07,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:07,224 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-11-13 02:32:07,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:32:07,225 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 43537140, now seen corresponding path program 1 times [2021-11-13 02:32:07,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:07,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395535797] [2021-11-13 02:32:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:07,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:07,283 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:32:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:07,321 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:32:07,322 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:32:07,324 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-11-13 02:32:07,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-13 02:32:07,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-13 02:32:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:32:07,329 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-13 02:32:07,330 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-13 02:32:07,330 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-11-13 02:32:07,341 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,341 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,341 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,342 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,342 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,342 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,342 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,342 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,343 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,343 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,343 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,343 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,344 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,344 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,344 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,344 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,344 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,344 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,345 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,345 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,345 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,345 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,345 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,346 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,346 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,346 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,346 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,347 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,347 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,347 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,347 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,347 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,348 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,348 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,348 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,348 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,348 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,349 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,349 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,349 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,349 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,349 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,350 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,350 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,350 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,350 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,350 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,351 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,351 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,351 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,351 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,351 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,351 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,352 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,352 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,352 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,352 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,353 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,353 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,353 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,353 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,353 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,354 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,354 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,354 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,354 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,355 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,355 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,355 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,355 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,355 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,356 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,356 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,356 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,357 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,357 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,357 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,357 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,357 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,358 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:07,358 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 02:32:07,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:07,362 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:32:07,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-13 02:32:07,364 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:32:07,365 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 92 transitions, 196 flow [2021-11-13 02:32:07,365 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 92 transitions, 196 flow [2021-11-13 02:32:07,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 92 transitions, 196 flow [2021-11-13 02:32:07,409 INFO L129 PetriNetUnfolder]: 6/121 cut-off events. [2021-11-13 02:32:07,410 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 02:32:07,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 121 events. 6/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2021-11-13 02:32:07,417 INFO L116 LiptonReduction]: Number of co-enabled transitions 2436 [2021-11-13 02:32:09,601 INFO L131 LiptonReduction]: Checked pairs total: 3089 [2021-11-13 02:32:09,601 INFO L133 LiptonReduction]: Total number of compositions: 94 [2021-11-13 02:32:09,602 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 18 transitions, 48 flow [2021-11-13 02:32:09,618 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 175 states, 165 states have (on average 2.824242424242424) internal successors, (466), 174 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 165 states have (on average 2.824242424242424) internal successors, (466), 174 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 02:32:09,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:09,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 02:32:09,621 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:09,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:09,621 INFO L85 PathProgramCache]: Analyzing trace with hash 478821305, now seen corresponding path program 1 times [2021-11-13 02:32:09,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:09,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386351721] [2021-11-13 02:32:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:09,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:09,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:09,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386351721] [2021-11-13 02:32:09,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386351721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:09,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:09,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:32:09,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367507318] [2021-11-13 02:32:09,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:09,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:09,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:09,697 INFO L87 Difference]: Start difference. First operand has 175 states, 165 states have (on average 2.824242424242424) internal successors, (466), 174 states have internal predecessors, (466), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:09,760 INFO L93 Difference]: Finished difference Result 128 states and 276 transitions. [2021-11-13 02:32:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-11-13 02:32:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:09,764 INFO L225 Difference]: With dead ends: 128 [2021-11-13 02:32:09,765 INFO L226 Difference]: Without dead ends: 123 [2021-11-13 02:32:09,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:09,766 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.12ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:09,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 52 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 46.12ms Time] [2021-11-13 02:32:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-13 02:32:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-13 02:32:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 2.2457627118644066) internal successors, (265), 122 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 265 transitions. [2021-11-13 02:32:09,791 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 265 transitions. Word has length 5 [2021-11-13 02:32:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:09,792 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 265 transitions. [2021-11-13 02:32:09,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 265 transitions. [2021-11-13 02:32:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:32:09,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:09,794 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2021-11-13 02:32:09,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:32:09,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2125893654, now seen corresponding path program 1 times [2021-11-13 02:32:09,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:09,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837937932] [2021-11-13 02:32:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:09,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:09,857 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:32:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:09,903 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:32:09,903 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:32:09,904 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2021-11-13 02:32:09,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-11-13 02:32:09,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-11-13 02:32:09,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-11-13 02:32:09,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 02:32:09,905 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-13 02:32:09,906 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-13 02:32:09,906 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-11-13 02:32:09,915 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,915 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,915 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,915 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,916 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,916 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,916 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,916 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,916 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,916 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,917 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,917 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,917 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,917 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,917 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,917 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,918 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,918 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,918 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,918 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,918 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,918 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,919 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,919 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,919 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,919 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,919 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,919 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,920 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,920 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,920 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,920 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,921 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,921 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,921 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,921 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,921 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,921 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,921 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,922 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,922 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,922 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,922 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,922 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,923 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,923 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,923 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,923 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,923 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,923 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,924 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,924 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,924 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,924 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,924 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,924 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,925 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,925 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,925 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,925 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,925 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,925 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,926 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,926 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,926 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,926 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,926 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,927 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,927 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,927 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,927 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,927 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,927 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,927 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,928 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,928 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,928 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,928 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,928 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,928 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,929 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,929 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,929 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,929 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,929 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,929 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,930 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,930 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,930 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,930 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,930 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,930 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,931 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,931 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,931 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,931 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,931 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,932 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,932 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,934 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,934 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,934 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,934 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,934 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,935 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,935 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,935 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,936 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,936 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,936 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,936 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,936 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,937 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,937 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,937 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,937 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,937 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,938 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,938 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,938 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:09,938 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 02:32:09,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:09,941 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:32:09,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-13 02:32:09,944 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:32:09,949 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 114 transitions, 249 flow [2021-11-13 02:32:09,950 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 114 transitions, 249 flow [2021-11-13 02:32:09,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 114 transitions, 249 flow [2021-11-13 02:32:09,998 INFO L129 PetriNetUnfolder]: 8/160 cut-off events. [2021-11-13 02:32:09,998 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-13 02:32:10,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 160 events. 8/160 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 306 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 125. Up to 8 conditions per place. [2021-11-13 02:32:10,009 INFO L116 LiptonReduction]: Number of co-enabled transitions 5040 [2021-11-13 02:32:12,653 INFO L131 LiptonReduction]: Checked pairs total: 7076 [2021-11-13 02:32:12,653 INFO L133 LiptonReduction]: Total number of compositions: 122 [2021-11-13 02:32:12,657 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 23 transitions, 67 flow [2021-11-13 02:32:12,728 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 889 states, 870 states have (on average 3.5229885057471266) internal successors, (3065), 888 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 889 states, 870 states have (on average 3.5229885057471266) internal successors, (3065), 888 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 02:32:12,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:12,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 02:32:12,738 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 02:32:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:12,739 INFO L85 PathProgramCache]: Analyzing trace with hash 724169869, now seen corresponding path program 1 times [2021-11-13 02:32:12,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:12,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107829425] [2021-11-13 02:32:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:12,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:12,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:12,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107829425] [2021-11-13 02:32:12,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107829425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:12,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:12,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:32:12,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583295423] [2021-11-13 02:32:12,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:12,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:12,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:12,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:12,861 INFO L87 Difference]: Start difference. First operand has 889 states, 870 states have (on average 3.5229885057471266) internal successors, (3065), 888 states have internal predecessors, (3065), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:12,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:12,978 INFO L93 Difference]: Finished difference Result 627 states and 1784 transitions. [2021-11-13 02:32:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:12,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-11-13 02:32:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:12,994 INFO L225 Difference]: With dead ends: 627 [2021-11-13 02:32:12,994 INFO L226 Difference]: Without dead ends: 625 [2021-11-13 02:32:12,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:12,996 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:12,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 73 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 75.45ms Time] [2021-11-13 02:32:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-13 02:32:13,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2021-11-13 02:32:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 610 states have (on average 2.919672131147541) internal successors, (1781), 624 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1781 transitions. [2021-11-13 02:32:13,088 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1781 transitions. Word has length 5 [2021-11-13 02:32:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:13,088 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1781 transitions. [2021-11-13 02:32:13,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1781 transitions. [2021-11-13 02:32:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:13,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:13,093 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:13,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:32:13,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 02:32:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1764531765, now seen corresponding path program 1 times [2021-11-13 02:32:13,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:13,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780705572] [2021-11-13 02:32:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:13,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:13,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:13,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780705572] [2021-11-13 02:32:13,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780705572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:13,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051886173] [2021-11-13 02:32:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:13,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:13,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:13,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:32:13,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:32:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:13,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:32:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:13,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:13,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051886173] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:13,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:32:13,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 8 [2021-11-13 02:32:13,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085336928] [2021-11-13 02:32:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:13,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:13,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:32:13,667 INFO L87 Difference]: Start difference. First operand 625 states and 1781 transitions. Second operand has 4 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) [2021-11-13 02:32:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:13,762 INFO L93 Difference]: Finished difference Result 967 states and 2528 transitions. [2021-11-13 02:32:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:13,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 12 [2021-11-13 02:32:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:13,773 INFO L225 Difference]: With dead ends: 967 [2021-11-13 02:32:13,773 INFO L226 Difference]: Without dead ends: 957 [2021-11-13 02:32:13,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:32:13,775 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:13,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 69 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 66.38ms Time] [2021-11-13 02:32:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-13 02:32:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 835. [2021-11-13 02:32:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 820 states have (on average 2.7756097560975608) internal successors, (2276), 834 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2276 transitions. [2021-11-13 02:32:13,851 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2276 transitions. Word has length 12 [2021-11-13 02:32:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:13,851 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2276 transitions. [2021-11-13 02:32:13,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-11-13 02:32:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2276 transitions. [2021-11-13 02:32:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:13,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:13,853 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:13,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:14,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:14,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 02:32:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1471803849, now seen corresponding path program 2 times [2021-11-13 02:32:14,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:14,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84148780] [2021-11-13 02:32:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:14,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:14,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:14,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84148780] [2021-11-13 02:32:14,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84148780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:14,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383177238] [2021-11-13 02:32:14,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:32:14,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:14,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:14,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:32:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 02:32:14,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:32:14,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:32:14,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:32:14,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:14,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:14,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383177238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:14,441 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:32:14,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [4] total 10 [2021-11-13 02:32:14,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98876607] [2021-11-13 02:32:14,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:14,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:32:14,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:32:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:32:14,444 INFO L87 Difference]: Start difference. First operand 835 states and 2276 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:14,657 INFO L93 Difference]: Finished difference Result 865 states and 2333 transitions. [2021-11-13 02:32:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:32:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:32:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:14,665 INFO L225 Difference]: With dead ends: 865 [2021-11-13 02:32:14,665 INFO L226 Difference]: Without dead ends: 798 [2021-11-13 02:32:14,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:32:14,667 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 70 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.31ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:14,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 38 Invalid, 243 Unknown, 0 Unchecked, 4.31ms Time], IncrementalHoareTripleChecker [38 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 172.51ms Time] [2021-11-13 02:32:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-11-13 02:32:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 519. [2021-11-13 02:32:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 512 states have (on average 2.857421875) internal successors, (1463), 518 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1463 transitions. [2021-11-13 02:32:14,694 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1463 transitions. Word has length 12 [2021-11-13 02:32:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:14,694 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 1463 transitions. [2021-11-13 02:32:14,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1463 transitions. [2021-11-13 02:32:14,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 02:32:14,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:14,697 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2021-11-13 02:32:14,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:14,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 02:32:14,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 02:32:14,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:14,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1418804923, now seen corresponding path program 1 times [2021-11-13 02:32:14,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:14,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761114282] [2021-11-13 02:32:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:14,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:14,930 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:32:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:14,952 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:32:14,952 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:32:14,952 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2021-11-13 02:32:14,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-13 02:32:14,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-13 02:32:14,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-13 02:32:14,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-13 02:32:14,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 02:32:14,954 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-13 02:32:14,954 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-13 02:32:14,955 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-11-13 02:32:14,966 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,966 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,967 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,967 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,967 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,967 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,967 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,967 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,968 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,969 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,970 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,971 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,972 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,972 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,972 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,972 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,973 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,974 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,974 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,974 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,974 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,974 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,974 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,975 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,975 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,975 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,975 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,976 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,976 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,976 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,976 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,976 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,976 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,977 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,977 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,977 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,977 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,977 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,977 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,978 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,978 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,978 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,978 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,978 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,979 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,979 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,979 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,979 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,979 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,979 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,980 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,980 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,980 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,980 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,980 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,980 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,981 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,981 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,981 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,981 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,981 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,981 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,981 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,982 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,982 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,982 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,982 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,982 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,982 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,983 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,983 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,983 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,983 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,983 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,984 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,984 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,984 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,984 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,984 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,984 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,984 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,985 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,985 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,985 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,985 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,985 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,985 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,986 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,986 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,986 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,986 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,986 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,986 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,987 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,987 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,987 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,987 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,987 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,987 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,988 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,988 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,988 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,988 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,988 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,988 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,989 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,989 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,989 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,989 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,990 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,990 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,990 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,990 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,991 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,991 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,991 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,991 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,991 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,992 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,992 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,992 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,992 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,993 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,993 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:14,993 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,014 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,014 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,015 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,015 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,016 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,016 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,016 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,016 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,016 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,017 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,017 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,017 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:15,017 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 02:32:15,019 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:15,020 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:32:15,020 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 02:32:15,022 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:32:15,022 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 136 transitions, 304 flow [2021-11-13 02:32:15,022 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 136 transitions, 304 flow [2021-11-13 02:32:15,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 136 transitions, 304 flow [2021-11-13 02:32:15,061 INFO L129 PetriNetUnfolder]: 10/199 cut-off events. [2021-11-13 02:32:15,061 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-11-13 02:32:15,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 199 events. 10/199 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 407 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 168. Up to 10 conditions per place. [2021-11-13 02:32:15,076 INFO L116 LiptonReduction]: Number of co-enabled transitions 8568 [2021-11-13 02:32:18,169 INFO L131 LiptonReduction]: Checked pairs total: 12228 [2021-11-13 02:32:18,170 INFO L133 LiptonReduction]: Total number of compositions: 148 [2021-11-13 02:32:18,171 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 92 flow [2021-11-13 02:32:18,428 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4510 states, 4466 states have (on average 4.690550828481863) internal successors, (20948), 4509 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 4510 states, 4466 states have (on average 4.690550828481863) internal successors, (20948), 4509 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 02:32:18,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:18,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 02:32:18,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 02:32:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:18,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1015982113, now seen corresponding path program 1 times [2021-11-13 02:32:18,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:18,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502562458] [2021-11-13 02:32:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:18,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:18,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:18,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502562458] [2021-11-13 02:32:18,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502562458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:18,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:18,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:32:18,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625317256] [2021-11-13 02:32:18,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:18,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:18,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:18,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:18,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:18,553 INFO L87 Difference]: Start difference. First operand has 4510 states, 4466 states have (on average 4.690550828481863) internal successors, (20948), 4509 states have internal predecessors, (20948), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:18,720 INFO L93 Difference]: Finished difference Result 4260 states and 14744 transitions. [2021-11-13 02:32:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-11-13 02:32:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:18,778 INFO L225 Difference]: With dead ends: 4260 [2021-11-13 02:32:18,779 INFO L226 Difference]: Without dead ends: 4238 [2021-11-13 02:32:18,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:18,782 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.85ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:18,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 94 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [13 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 77.85ms Time] [2021-11-13 02:32:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2021-11-13 02:32:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 3989. [2021-11-13 02:32:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3952 states have (on average 3.5574392712550607) internal successors, (14059), 3988 states have internal predecessors, (14059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 14059 transitions. [2021-11-13 02:32:19,083 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 14059 transitions. Word has length 5 [2021-11-13 02:32:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:19,083 INFO L470 AbstractCegarLoop]: Abstraction has 3989 states and 14059 transitions. [2021-11-13 02:32:19,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 14059 transitions. [2021-11-13 02:32:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:19,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:19,091 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:19,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 02:32:19,091 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 02:32:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1217930855, now seen corresponding path program 1 times [2021-11-13 02:32:19,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:19,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677466819] [2021-11-13 02:32:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:19,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:19,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:19,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677466819] [2021-11-13 02:32:19,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677466819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:19,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:19,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:32:19,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305450114] [2021-11-13 02:32:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:19,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:32:19,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:32:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:32:19,200 INFO L87 Difference]: Start difference. First operand 3989 states and 14059 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-13 02:32:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:19,418 INFO L93 Difference]: Finished difference Result 6445 states and 20940 transitions. [2021-11-13 02:32:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:32:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 12 [2021-11-13 02:32:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:19,513 INFO L225 Difference]: With dead ends: 6445 [2021-11-13 02:32:19,514 INFO L226 Difference]: Without dead ends: 6427 [2021-11-13 02:32:19,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:32:19,515 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 52 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:19,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 10 Invalid, 131 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [36 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 113.56ms Time] [2021-11-13 02:32:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6427 states. [2021-11-13 02:32:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6427 to 5278. [2021-11-13 02:32:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5241 states have (on average 3.368631940469376) internal successors, (17655), 5277 states have internal predecessors, (17655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17655 transitions. [2021-11-13 02:32:19,986 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17655 transitions. Word has length 12 [2021-11-13 02:32:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:19,987 INFO L470 AbstractCegarLoop]: Abstraction has 5278 states and 17655 transitions. [2021-11-13 02:32:19,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-13 02:32:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17655 transitions. [2021-11-13 02:32:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:19,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:19,990 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:19,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 02:32:19,991 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 02:32:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1217936435, now seen corresponding path program 2 times [2021-11-13 02:32:19,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:19,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120101157] [2021-11-13 02:32:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:19,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:20,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:20,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120101157] [2021-11-13 02:32:20,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120101157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:20,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:20,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:32:20,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681032396] [2021-11-13 02:32:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:20,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:32:20,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:20,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:32:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:32:20,076 INFO L87 Difference]: Start difference. First operand 5278 states and 17655 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-13 02:32:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:20,264 INFO L93 Difference]: Finished difference Result 4777 states and 15753 transitions. [2021-11-13 02:32:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:32:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 12 [2021-11-13 02:32:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:20,313 INFO L225 Difference]: With dead ends: 4777 [2021-11-13 02:32:20,313 INFO L226 Difference]: Without dead ends: 4707 [2021-11-13 02:32:20,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:32:20,315 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:20,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 14 Invalid, 152 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [19 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 131.53ms Time] [2021-11-13 02:32:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2021-11-13 02:32:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4194. [2021-11-13 02:32:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 4170 states have (on average 3.3628297362110313) internal successors, (14023), 4193 states have internal predecessors, (14023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 14023 transitions. [2021-11-13 02:32:20,619 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 14023 transitions. Word has length 12 [2021-11-13 02:32:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:20,620 INFO L470 AbstractCegarLoop]: Abstraction has 4194 states and 14023 transitions. [2021-11-13 02:32:20,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-13 02:32:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 14023 transitions. [2021-11-13 02:32:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:32:20,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:20,625 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:20,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 02:32:20,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 02:32:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1932715511, now seen corresponding path program 1 times [2021-11-13 02:32:20,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:20,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328262410] [2021-11-13 02:32:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:20,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:20,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:20,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328262410] [2021-11-13 02:32:20,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328262410] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:20,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932350949] [2021-11-13 02:32:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:20,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:20,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:20,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:32:20,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 02:32:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:21,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:32:21,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:21,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 02:32:21,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932350949] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:21,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:32:21,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 6] total 10 [2021-11-13 02:32:21,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577537316] [2021-11-13 02:32:21,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:21,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:32:21,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:32:21,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:32:21,282 INFO L87 Difference]: Start difference. First operand 4194 states and 14023 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-13 02:32:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:21,460 INFO L93 Difference]: Finished difference Result 5495 states and 17670 transitions. [2021-11-13 02:32:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:32:21,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 19 [2021-11-13 02:32:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:21,492 INFO L225 Difference]: With dead ends: 5495 [2021-11-13 02:32:21,493 INFO L226 Difference]: Without dead ends: 5345 [2021-11-13 02:32:21,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:32:21,494 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.54ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:21,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 12 Invalid, 130 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [27 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 122.54ms Time] [2021-11-13 02:32:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-11-13 02:32:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 3144. [2021-11-13 02:32:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 3120 states have (on average 3.4166666666666665) internal successors, (10660), 3143 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 10660 transitions. [2021-11-13 02:32:21,696 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 10660 transitions. Word has length 19 [2021-11-13 02:32:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:21,696 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 10660 transitions. [2021-11-13 02:32:21,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-13 02:32:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 10660 transitions. [2021-11-13 02:32:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:32:21,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:21,700 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:21,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:21,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:21,918 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 02:32:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash -781045715, now seen corresponding path program 2 times [2021-11-13 02:32:21,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:21,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743793272] [2021-11-13 02:32:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:21,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:21,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:21,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743793272] [2021-11-13 02:32:21,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743793272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:21,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815923015] [2021-11-13 02:32:21,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:32:21,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:21,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:21,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:32:22,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 02:32:22,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:32:22,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:32:22,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:32:22,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:22,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:22,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815923015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:22,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:32:22,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [4] total 11 [2021-11-13 02:32:22,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688176765] [2021-11-13 02:32:22,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:22,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:32:22,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:32:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:32:22,404 INFO L87 Difference]: Start difference. First operand 3144 states and 10660 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:22,970 INFO L93 Difference]: Finished difference Result 3382 states and 11522 transitions. [2021-11-13 02:32:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:32:22,970 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 19 [2021-11-13 02:32:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:22,990 INFO L225 Difference]: With dead ends: 3382 [2021-11-13 02:32:22,991 INFO L226 Difference]: Without dead ends: 3096 [2021-11-13 02:32:22,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:32:22,992 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 124 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 406.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 486.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:22,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 72 Invalid, 598 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [78 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 486.51ms Time] [2021-11-13 02:32:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2021-11-13 02:32:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2023. [2021-11-13 02:32:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 2014 states have (on average 3.583416087388282) internal successors, (7217), 2022 states have internal predecessors, (7217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 7217 transitions. [2021-11-13 02:32:23,114 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 7217 transitions. Word has length 19 [2021-11-13 02:32:23,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:23,116 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 7217 transitions. [2021-11-13 02:32:23,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 7217 transitions. [2021-11-13 02:32:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:32:23,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:23,119 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:23,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:23,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 02:32:23,333 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 02:32:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash -376917563, now seen corresponding path program 1 times [2021-11-13 02:32:23,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:23,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931317290] [2021-11-13 02:32:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:23,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:23,350 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:32:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:23,381 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:32:23,385 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:32:23,385 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2021-11-13 02:32:23,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 02:32:23,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-13 02:32:23,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-13 02:32:23,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-13 02:32:23,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 02:32:23,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 02:32:23,389 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2021-11-13 02:32:23,389 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-13 02:32:23,390 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-11-13 02:32:23,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,413 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,413 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,413 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,413 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,413 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,413 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,414 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,414 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,414 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,414 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,414 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,414 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,425 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,430 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,430 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,430 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,430 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,430 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,431 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,431 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,431 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,431 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,432 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,432 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,432 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,432 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,432 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,432 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,432 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,433 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,433 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,433 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,433 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,433 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,434 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,434 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,434 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,434 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,434 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,434 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,435 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,435 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,435 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,435 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,437 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,437 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,437 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,437 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,437 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,438 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,438 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,438 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,438 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,438 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,439 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,440 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,441 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,442 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,443 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,444 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,445 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,446 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:23,455 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 02:32:23,457 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:23,458 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:32:23,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-13 02:32:23,460 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:32:23,465 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 158 transitions, 361 flow [2021-11-13 02:32:23,465 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 158 transitions, 361 flow [2021-11-13 02:32:23,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 162 places, 158 transitions, 361 flow [2021-11-13 02:32:23,509 INFO L129 PetriNetUnfolder]: 12/238 cut-off events. [2021-11-13 02:32:23,510 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-11-13 02:32:23,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 238 events. 12/238 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 525 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 212. Up to 12 conditions per place. [2021-11-13 02:32:23,529 INFO L116 LiptonReduction]: Number of co-enabled transitions 13020 [2021-11-13 02:32:26,767 INFO L131 LiptonReduction]: Checked pairs total: 18872 [2021-11-13 02:32:26,767 INFO L133 LiptonReduction]: Total number of compositions: 173 [2021-11-13 02:32:26,768 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 115 flow [2021-11-13 02:32:28,447 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 22615 states, 22524 states have (on average 5.468611259101403) internal successors, (123175), 22614 states have internal predecessors, (123175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 22615 states, 22524 states have (on average 5.468611259101403) internal successors, (123175), 22614 states have internal predecessors, (123175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 02:32:28,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:28,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 02:32:28,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-13 02:32:28,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:28,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1352617162, now seen corresponding path program 1 times [2021-11-13 02:32:28,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:28,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055976882] [2021-11-13 02:32:28,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:28,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:28,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:28,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055976882] [2021-11-13 02:32:28,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055976882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:28,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:28,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:32:28,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139338075] [2021-11-13 02:32:28,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:28,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:28,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:28,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:28,628 INFO L87 Difference]: Start difference. First operand has 22615 states, 22524 states have (on average 5.468611259101403) internal successors, (123175), 22614 states have internal predecessors, (123175), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:29,293 INFO L93 Difference]: Finished difference Result 16829 states and 73499 transitions. [2021-11-13 02:32:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-11-13 02:32:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:29,537 INFO L225 Difference]: With dead ends: 16829 [2021-11-13 02:32:29,537 INFO L226 Difference]: Without dead ends: 16803 [2021-11-13 02:32:29,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:29,539 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.25ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:29,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 106 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 123.25ms Time] [2021-11-13 02:32:29,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16803 states. [2021-11-13 02:32:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16803 to 16803. [2021-11-13 02:32:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16803 states, 16720 states have (on average 4.3875598086124405) internal successors, (73360), 16802 states have internal predecessors, (73360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16803 states to 16803 states and 73360 transitions. [2021-11-13 02:32:30,779 INFO L78 Accepts]: Start accepts. Automaton has 16803 states and 73360 transitions. Word has length 5 [2021-11-13 02:32:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:30,780 INFO L470 AbstractCegarLoop]: Abstraction has 16803 states and 73360 transitions. [2021-11-13 02:32:30,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 16803 states and 73360 transitions. [2021-11-13 02:32:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:30,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:30,781 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:30,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 02:32:30,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-13 02:32:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash -492166891, now seen corresponding path program 1 times [2021-11-13 02:32:30,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:30,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848272993] [2021-11-13 02:32:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:30,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:30,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:30,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848272993] [2021-11-13 02:32:30,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848272993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:30,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963949366] [2021-11-13 02:32:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:30,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:30,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:30,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:32:31,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 02:32:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:31,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:32:31,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:31,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:32:31,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963949366] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:31,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:32:31,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 8 [2021-11-13 02:32:31,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41799680] [2021-11-13 02:32:31,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:31,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:31,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:32:31,183 INFO L87 Difference]: Start difference. First operand 16803 states and 73360 transitions. Second operand has 4 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) [2021-11-13 02:32:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:31,592 INFO L93 Difference]: Finished difference Result 35360 states and 138380 transitions. [2021-11-13 02:32:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 12 [2021-11-13 02:32:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:32,167 INFO L225 Difference]: With dead ends: 35360 [2021-11-13 02:32:32,167 INFO L226 Difference]: Without dead ends: 35332 [2021-11-13 02:32:32,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:32:32,168 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.42ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:32,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8 Invalid, 111 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [28 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 78.42ms Time] [2021-11-13 02:32:32,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35332 states. [2021-11-13 02:32:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35332 to 31948. [2021-11-13 02:32:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31948 states, 31865 states have (on average 4.005460536638946) internal successors, (127634), 31947 states have internal predecessors, (127634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31948 states to 31948 states and 127634 transitions. [2021-11-13 02:32:33,934 INFO L78 Accepts]: Start accepts. Automaton has 31948 states and 127634 transitions. Word has length 12 [2021-11-13 02:32:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:33,945 INFO L470 AbstractCegarLoop]: Abstraction has 31948 states and 127634 transitions. [2021-11-13 02:32:33,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-11-13 02:32:33,946 INFO L276 IsEmpty]: Start isEmpty. Operand 31948 states and 127634 transitions. [2021-11-13 02:32:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:33,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:33,947 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:33,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:34,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-13 02:32:34,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-13 02:32:34,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash 452966289, now seen corresponding path program 2 times [2021-11-13 02:32:34,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:34,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851683932] [2021-11-13 02:32:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:34,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:34,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:34,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851683932] [2021-11-13 02:32:34,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851683932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:34,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:34,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:32:34,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131295242] [2021-11-13 02:32:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:34,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:32:34,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:32:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:32:34,213 INFO L87 Difference]: Start difference. First operand 31948 states and 127634 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:34,548 INFO L93 Difference]: Finished difference Result 23145 states and 90019 transitions. [2021-11-13 02:32:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:32:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:32:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:34,674 INFO L225 Difference]: With dead ends: 23145 [2021-11-13 02:32:34,675 INFO L226 Difference]: Without dead ends: 23135 [2021-11-13 02:32:34,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:32:34,676 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.21ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:34,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 14 Invalid, 185 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [35 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 113.21ms Time] [2021-11-13 02:32:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23135 states. [2021-11-13 02:32:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23135 to 19955. [2021-11-13 02:32:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19955 states, 19891 states have (on average 3.9201146247046403) internal successors, (77975), 19954 states have internal predecessors, (77975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19955 states to 19955 states and 77975 transitions. [2021-11-13 02:32:35,600 INFO L78 Accepts]: Start accepts. Automaton has 19955 states and 77975 transitions. Word has length 12 [2021-11-13 02:32:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:35,600 INFO L470 AbstractCegarLoop]: Abstraction has 19955 states and 77975 transitions. [2021-11-13 02:32:35,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 19955 states and 77975 transitions. [2021-11-13 02:32:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:32:35,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:35,603 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:35,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 02:32:35,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-13 02:32:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:35,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1235083726, now seen corresponding path program 1 times [2021-11-13 02:32:35,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:35,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666368711] [2021-11-13 02:32:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:35,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:32:35,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:35,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666368711] [2021-11-13 02:32:35,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666368711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:35,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812405448] [2021-11-13 02:32:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:35,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:35,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:35,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:32:35,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 02:32:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:35,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:32:35,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:32:35,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 02:32:36,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812405448] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:36,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:32:36,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 11 [2021-11-13 02:32:36,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643513249] [2021-11-13 02:32:36,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:36,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:32:36,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:32:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:32:36,045 INFO L87 Difference]: Start difference. First operand 19955 states and 77975 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-13 02:32:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:36,370 INFO L93 Difference]: Finished difference Result 31915 states and 118963 transitions. [2021-11-13 02:32:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:32:36,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 19 [2021-11-13 02:32:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:36,819 INFO L225 Difference]: With dead ends: 31915 [2021-11-13 02:32:36,820 INFO L226 Difference]: Without dead ends: 31591 [2021-11-13 02:32:36,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:32:36,828 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.01ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:36,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 12 Invalid, 159 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [29 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 146.01ms Time] [2021-11-13 02:32:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31591 states. [2021-11-13 02:32:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31591 to 19508. [2021-11-13 02:32:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19508 states, 19444 states have (on average 3.915758074470274) internal successors, (76138), 19507 states have internal predecessors, (76138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19508 states to 19508 states and 76138 transitions. [2021-11-13 02:32:37,779 INFO L78 Accepts]: Start accepts. Automaton has 19508 states and 76138 transitions. Word has length 19 [2021-11-13 02:32:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:37,780 INFO L470 AbstractCegarLoop]: Abstraction has 19508 states and 76138 transitions. [2021-11-13 02:32:37,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-13 02:32:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 19508 states and 76138 transitions. [2021-11-13 02:32:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:32:37,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:37,783 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:37,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-13 02:32:38,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 02:32:38,009 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-13 02:32:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash -933845380, now seen corresponding path program 2 times [2021-11-13 02:32:38,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:38,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067443724] [2021-11-13 02:32:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:38,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:32:38,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:38,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067443724] [2021-11-13 02:32:38,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067443724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:38,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:38,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:32:38,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080745946] [2021-11-13 02:32:38,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:38,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:32:38,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:32:38,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:32:38,102 INFO L87 Difference]: Start difference. First operand 19508 states and 76138 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-11-13 02:32:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:38,433 INFO L93 Difference]: Finished difference Result 24435 states and 97098 transitions. [2021-11-13 02:32:38,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:32:38,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) Word has length 19 [2021-11-13 02:32:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:38,510 INFO L225 Difference]: With dead ends: 24435 [2021-11-13 02:32:38,510 INFO L226 Difference]: Without dead ends: 24315 [2021-11-13 02:32:38,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:32:38,511 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 80 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.52ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:38,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 26 Invalid, 319 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [49 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 194.52ms Time] [2021-11-13 02:32:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24315 states. [2021-11-13 02:32:39,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24315 to 14872. [2021-11-13 02:32:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14872 states, 14837 states have (on average 4.063422524769158) internal successors, (60289), 14871 states have internal predecessors, (60289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14872 states to 14872 states and 60289 transitions. [2021-11-13 02:32:39,212 INFO L78 Accepts]: Start accepts. Automaton has 14872 states and 60289 transitions. Word has length 19 [2021-11-13 02:32:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:39,213 INFO L470 AbstractCegarLoop]: Abstraction has 14872 states and 60289 transitions. [2021-11-13 02:32:39,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-11-13 02:32:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 14872 states and 60289 transitions. [2021-11-13 02:32:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 02:32:39,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:39,221 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:39,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 02:32:39,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-13 02:32:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash 566362514, now seen corresponding path program 1 times [2021-11-13 02:32:39,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:39,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858181547] [2021-11-13 02:32:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:39,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:39,239 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:32:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:39,268 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:32:39,271 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:32:39,272 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 7 remaining) [2021-11-13 02:32:39,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-13 02:32:39,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-13 02:32:39,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-13 02:32:39,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-13 02:32:39,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-13 02:32:39,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-13 02:32:39,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 02:32:39,276 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2021-11-13 02:32:39,276 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-13 02:32:39,276 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-11-13 02:32:39,293 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,293 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,293 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,293 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,293 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,294 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,294 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,294 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,294 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,294 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,294 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,295 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,295 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,295 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,295 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,295 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,296 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,296 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,296 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,296 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,296 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,296 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,296 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,297 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,297 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,297 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,297 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,297 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,298 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,298 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,298 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,298 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,298 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,299 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,299 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,299 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,299 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,299 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,299 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,299 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,300 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,300 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,300 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,300 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,300 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,309 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,309 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,309 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,309 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,309 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,310 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,311 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,312 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,313 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,314 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,315 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,316 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,317 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,318 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,319 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,319 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,319 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,319 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,319 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,320 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,320 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,320 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,320 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,320 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,320 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,321 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,321 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,321 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,321 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,321 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,321 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,322 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,322 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,322 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,322 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,322 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,322 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,325 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,325 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,325 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,325 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,325 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,325 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,326 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,326 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,326 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,326 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,326 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,327 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,327 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,327 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,327 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,327 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,328 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,328 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,329 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,329 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,329 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,329 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,329 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,329 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,330 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,330 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,330 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,330 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,331 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,331 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,331 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,331 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,331 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,332 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,332 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,332 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,332 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,332 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,333 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,333 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,333 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,333 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,334 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,334 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,334 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,334 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,334 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,334 WARN L322 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,335 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_inct_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,335 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,335 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,336 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,336 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,337 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,337 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,337 WARN L322 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_incs_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:32:39,337 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 02:32:39,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:39,340 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:32:39,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-13 02:32:39,342 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:32:39,342 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 180 transitions, 420 flow [2021-11-13 02:32:39,345 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 180 transitions, 420 flow [2021-11-13 02:32:39,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 185 places, 180 transitions, 420 flow [2021-11-13 02:32:39,405 INFO L129 PetriNetUnfolder]: 14/277 cut-off events. [2021-11-13 02:32:39,405 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-11-13 02:32:39,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 277 events. 14/277 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 621 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 257. Up to 14 conditions per place. [2021-11-13 02:32:39,429 INFO L116 LiptonReduction]: Number of co-enabled transitions 18396 [2021-11-13 02:32:42,211 INFO L131 LiptonReduction]: Checked pairs total: 25864 [2021-11-13 02:32:42,211 INFO L133 LiptonReduction]: Total number of compositions: 191 [2021-11-13 02:32:42,212 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 41 transitions, 142 flow [2021-11-13 02:32:47,510 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 113230 states, 113040 states have (on average 6.45682059447983) internal successors, (729879), 113229 states have internal predecessors, (729879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 113230 states, 113040 states have (on average 6.45682059447983) internal successors, (729879), 113229 states have internal predecessors, (729879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 02:32:47,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:47,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 02:32:47,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 02:32:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1728982097, now seen corresponding path program 1 times [2021-11-13 02:32:47,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:47,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046002659] [2021-11-13 02:32:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:47,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:47,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:47,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046002659] [2021-11-13 02:32:47,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046002659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:47,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:47,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:32:47,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130671272] [2021-11-13 02:32:47,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:47,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:47,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:48,005 INFO L87 Difference]: Start difference. First operand has 113230 states, 113040 states have (on average 6.45682059447983) internal successors, (729879), 113229 states have internal predecessors, (729879), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:50,058 INFO L93 Difference]: Finished difference Result 88023 states and 454892 transitions. [2021-11-13 02:32:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-11-13 02:32:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:50,838 INFO L225 Difference]: With dead ends: 88023 [2021-11-13 02:32:50,839 INFO L226 Difference]: Without dead ends: 87943 [2021-11-13 02:32:50,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:50,839 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.60ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.75ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:50,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 136 Unknown, 0 Unchecked, 0.60ms Time], IncrementalHoareTripleChecker [16 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 113.75ms Time] [2021-11-13 02:32:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87943 states. [2021-11-13 02:32:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87943 to 87943. [2021-11-13 02:32:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87943 states, 87766 states have (on average 5.177346580680446) internal successors, (454395), 87942 states have internal predecessors, (454395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87943 states to 87943 states and 454395 transitions. [2021-11-13 02:32:56,193 INFO L78 Accepts]: Start accepts. Automaton has 87943 states and 454395 transitions. Word has length 5 [2021-11-13 02:32:56,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:56,193 INFO L470 AbstractCegarLoop]: Abstraction has 87943 states and 454395 transitions. [2021-11-13 02:32:56,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-13 02:32:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 87943 states and 454395 transitions. [2021-11-13 02:32:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:56,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:56,195 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:56,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 02:32:56,195 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 02:32:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2058551383, now seen corresponding path program 1 times [2021-11-13 02:32:56,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:56,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145496266] [2021-11-13 02:32:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:56,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:56,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:32:56,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145496266] [2021-11-13 02:32:56,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145496266] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:32:56,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484283181] [2021-11-13 02:32:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:56,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:32:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:56,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:32:56,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 02:32:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:56,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:32:56,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:56,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:32:56,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484283181] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:56,509 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:32:56,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [4] total 8 [2021-11-13 02:32:56,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312172947] [2021-11-13 02:32:56,510 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:56,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:32:56,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:32:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:32:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:32:56,520 INFO L87 Difference]: Start difference. First operand 87943 states and 454395 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:32:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:58,973 INFO L93 Difference]: Finished difference Result 98056 states and 421623 transitions. [2021-11-13 02:32:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:32:58,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:32:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:59,541 INFO L225 Difference]: With dead ends: 98056 [2021-11-13 02:32:59,541 INFO L226 Difference]: Without dead ends: 98008 [2021-11-13 02:32:59,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:32:59,543 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 122 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 301.77ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:59,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 26 Invalid, 390 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [81 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 301.77ms Time] [2021-11-13 02:32:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98008 states. [2021-11-13 02:33:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98008 to 91256. [2021-11-13 02:33:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91256 states, 91105 states have (on average 4.389813950935734) internal successors, (399934), 91255 states have internal predecessors, (399934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:33:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91256 states to 91256 states and 399934 transitions. [2021-11-13 02:33:03,514 INFO L78 Accepts]: Start accepts. Automaton has 91256 states and 399934 transitions. Word has length 12 [2021-11-13 02:33:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:03,515 INFO L470 AbstractCegarLoop]: Abstraction has 91256 states and 399934 transitions. [2021-11-13 02:33:03,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:33:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 91256 states and 399934 transitions. [2021-11-13 02:33:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:33:03,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:03,516 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:03,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-13 02:33:03,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-13 02:33:03,721 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 02:33:03,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2082496174, now seen corresponding path program 1 times [2021-11-13 02:33:03,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:33:03,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788557704] [2021-11-13 02:33:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:03,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:33:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 02:33:04,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:33:04,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788557704] [2021-11-13 02:33:04,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788557704] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:33:04,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378780300] [2021-11-13 02:33:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:04,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:33:04,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:33:04,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:33:04,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 02:33:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:04,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:33:04,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 02:33:05,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 02:33:05,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378780300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:05,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:33:05,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [5] total 12 [2021-11-13 02:33:05,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667463319] [2021-11-13 02:33:05,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:05,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:33:05,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:33:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:33:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:33:05,104 INFO L87 Difference]: Start difference. First operand 91256 states and 399934 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:33:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:06,794 INFO L93 Difference]: Finished difference Result 115696 states and 514349 transitions. [2021-11-13 02:33:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:33:06,794 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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 19 [2021-11-13 02:33:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:08,604 INFO L225 Difference]: With dead ends: 115696 [2021-11-13 02:33:08,604 INFO L226 Difference]: Without dead ends: 115038 [2021-11-13 02:33:08,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:33:08,605 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 211 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 402.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 500.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:08,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 52 Invalid, 777 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [138 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 500.23ms Time] [2021-11-13 02:33:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115038 states. [2021-11-13 02:33:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115038 to 55876. [2021-11-13 02:33:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55876 states, 55774 states have (on average 4.531681428622655) internal successors, (252750), 55875 states have internal predecessors, (252750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:33:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55876 states to 55876 states and 252750 transitions. [2021-11-13 02:33:11,683 INFO L78 Accepts]: Start accepts. Automaton has 55876 states and 252750 transitions. Word has length 19 [2021-11-13 02:33:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:11,683 INFO L470 AbstractCegarLoop]: Abstraction has 55876 states and 252750 transitions. [2021-11-13 02:33:11,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:33:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 55876 states and 252750 transitions. [2021-11-13 02:33:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 02:33:11,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:11,696 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:11,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:11,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-13 02:33:11,909 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 02:33:11,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1391120779, now seen corresponding path program 1 times [2021-11-13 02:33:11,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:33:11,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484998859] [2021-11-13 02:33:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:11,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:33:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 02:33:11,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:33:11,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484998859] [2021-11-13 02:33:11,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484998859] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:33:11,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546821364] [2021-11-13 02:33:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:11,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:33:11,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:33:11,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:33:12,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0dfb35-253f-4b81-b5a1-c373530609cc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 02:33:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:12,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 02:33:12,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 02:33:12,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 02:33:12,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546821364] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:33:12,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:33:12,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 15 [2021-11-13 02:33:12,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311416217] [2021-11-13 02:33:12,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:12,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:33:12,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:33:12,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:33:12,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:33:12,458 INFO L87 Difference]: Start difference. First operand 55876 states and 252750 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:33:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:14,659 INFO L93 Difference]: Finished difference Result 88139 states and 395488 transitions. [2021-11-13 02:33:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:33:14,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 26 [2021-11-13 02:33:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:15,131 INFO L225 Difference]: With dead ends: 88139 [2021-11-13 02:33:15,132 INFO L226 Difference]: Without dead ends: 86476 [2021-11-13 02:33:15,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:33:15,132 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.66ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:15,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 20 Invalid, 294 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [43 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 337.66ms Time] [2021-11-13 02:33:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86476 states.