./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8791b6973aa1a0d5421161a634fa2e6c3276aa5fd05ed6d81de7a2762aa206a 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:20:06,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:20:06,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:20:06,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:20:06,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:20:06,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:20:06,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:20:06,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:20:06,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:20:06,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:20:06,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:20:06,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:20:06,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:20:06,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:20:06,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:20:06,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:20:06,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:20:06,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:20:06,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:20:06,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:20:06,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:20:06,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:20:06,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:20:06,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:20:06,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:20:06,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:20:06,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:20:06,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:20:06,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:20:06,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:20:06,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:20:06,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:20:06,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:20:06,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:20:06,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:20:06,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:20:06,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:20:06,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:20:06,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:20:06,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:20:06,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:20:06,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:20:06,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:20:06,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:20:06,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:20:06,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:20:06,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:20:06,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:20:06,174 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:20:06,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:20:06,175 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:20:06,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:20:06,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:20:06,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:20:06,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:20:06,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:20:06,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:20:06,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:20:06,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:20:06,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:20:06,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:20:06,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:20:06,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:20:06,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:20:06,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:20:06,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:20:06,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:20:06,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:20:06,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:20:06,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:20:06,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:20:06,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:20:06,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:20:06,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:20:06,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8791b6973aa1a0d5421161a634fa2e6c3276aa5fd05ed6d81de7a2762aa206a [2021-10-28 09:20:06,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:20:06,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:20:06,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:20:06,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:20:06,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:20:06,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c [2021-10-28 09:20:06,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/data/6b3c8bb3e/dad9b7bca0d640ba97fb28387aa8ade8/FLAGd8194a7a9 [2021-10-28 09:20:07,218 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:20:07,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c [2021-10-28 09:20:07,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/data/6b3c8bb3e/dad9b7bca0d640ba97fb28387aa8ade8/FLAGd8194a7a9 [2021-10-28 09:20:07,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/data/6b3c8bb3e/dad9b7bca0d640ba97fb28387aa8ade8 [2021-10-28 09:20:07,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:20:07,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:20:07,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:20:07,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:20:07,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:20:07,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66246a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07, skipping insertion in model container [2021-10-28 09:20:07,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:20:07,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:20:07,823 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_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c[468,481] [2021-10-28 09:20:07,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:20:07,851 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:20:07,865 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_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c[468,481] [2021-10-28 09:20:07,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:20:07,889 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:20:07,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07 WrapperNode [2021-10-28 09:20:07,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:20:07,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:20:07,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:20:07,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:20:07,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:20:07,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:20:07,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:20:07,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:20:07,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:20:07,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:20:07,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:20:07,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:20:07,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (1/1) ... [2021-10-28 09:20:07,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:20:07,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:08,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:20:08,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:20:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:20:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:20:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:20:08,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:20:08,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:20:08,330 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 09:20:08,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:20:08 BoogieIcfgContainer [2021-10-28 09:20:08,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:20:08,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:20:08,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:20:08,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:20:08,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:20:07" (1/3) ... [2021-10-28 09:20:08,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ee1d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:20:08, skipping insertion in model container [2021-10-28 09:20:08,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:07" (2/3) ... [2021-10-28 09:20:08,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ee1d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:20:08, skipping insertion in model container [2021-10-28 09:20:08,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:20:08" (3/3) ... [2021-10-28 09:20:08,344 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_delay_notd2.c [2021-10-28 09:20:08,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:20:08,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:20:08,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:20:08,417 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:20:08,418 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:20:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:20:08,442 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:08,443 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:08,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash -493598204, now seen corresponding path program 1 times [2021-10-28 09:20:08,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:08,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800549511] [2021-10-28 09:20:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:08,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:08,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:08,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800549511] [2021-10-28 09:20:08,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800549511] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:08,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:08,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:20:08,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494620444] [2021-10-28 09:20:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:20:08,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:20:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:20:08,791 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-10-28 09:20:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:08,828 INFO L93 Difference]: Finished difference Result 33 states and 53 transitions. [2021-10-28 09:20:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:20:08,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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 [2021-10-28 09:20:08,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:08,843 INFO L225 Difference]: With dead ends: 33 [2021-10-28 09:20:08,843 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 09:20:08,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:20:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 09:20:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-28 09:20:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-10-28 09:20:08,883 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 12 [2021-10-28 09:20:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:08,883 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-28 09:20:08,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-10-28 09:20:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2021-10-28 09:20:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:20:08,885 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:08,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:08,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:20:08,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:08,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2059231113, now seen corresponding path program 1 times [2021-10-28 09:20:08,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:08,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240275289] [2021-10-28 09:20:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:08,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:08,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:08,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240275289] [2021-10-28 09:20:08,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240275289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:08,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:08,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:20:08,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742806677] [2021-10-28 09:20:08,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:20:08,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:09,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:20:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:20:09,001 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2021-10-28 09:20:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:09,064 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2021-10-28 09:20:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:20:09,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 [2021-10-28 09:20:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:09,066 INFO L225 Difference]: With dead ends: 32 [2021-10-28 09:20:09,066 INFO L226 Difference]: Without dead ends: 20 [2021-10-28 09:20:09,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:20:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-28 09:20:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-10-28 09:20:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) 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) [2021-10-28 09:20:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2021-10-28 09:20:09,073 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 12 [2021-10-28 09:20:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:09,074 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-10-28 09:20:09,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2021-10-28 09:20:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2021-10-28 09:20:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:20:09,075 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:09,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:09,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:20:09,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash 573171571, now seen corresponding path program 1 times [2021-10-28 09:20:09,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:09,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770338120] [2021-10-28 09:20:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:09,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:20:09,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:09,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770338120] [2021-10-28 09:20:09,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770338120] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:09,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:09,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:20:09,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045878803] [2021-10-28 09:20:09,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:20:09,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:20:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:20:09,155 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-28 09:20:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:09,225 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2021-10-28 09:20:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:20:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 15 [2021-10-28 09:20:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:09,228 INFO L225 Difference]: With dead ends: 38 [2021-10-28 09:20:09,229 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 09:20:09,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:20:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 09:20:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2021-10-28 09:20:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 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) [2021-10-28 09:20:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-10-28 09:20:09,235 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 15 [2021-10-28 09:20:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:09,236 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-10-28 09:20:09,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-28 09:20:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-10-28 09:20:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:20:09,238 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:09,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:09,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:20:09,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:09,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash 630429873, now seen corresponding path program 1 times [2021-10-28 09:20:09,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:09,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806298901] [2021-10-28 09:20:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:09,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:20:09,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:09,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806298901] [2021-10-28 09:20:09,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806298901] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:09,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:09,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:20:09,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987280273] [2021-10-28 09:20:09,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:20:09,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:20:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:20:09,353 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2021-10-28 09:20:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:09,407 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2021-10-28 09:20:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:20:09,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 15 [2021-10-28 09:20:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:09,413 INFO L225 Difference]: With dead ends: 46 [2021-10-28 09:20:09,414 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 09:20:09,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:20:09,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 09:20:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-28 09:20:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2021-10-28 09:20:09,433 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 42 transitions. Word has length 15 [2021-10-28 09:20:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:09,434 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 42 transitions. [2021-10-28 09:20:09,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2021-10-28 09:20:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2021-10-28 09:20:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:20:09,437 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:09,438 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:09,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:20:09,438 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash 630489455, now seen corresponding path program 1 times [2021-10-28 09:20:09,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:09,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417615845] [2021-10-28 09:20:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:09,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:09,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:09,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417615845] [2021-10-28 09:20:09,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417615845] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:09,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082833238] [2021-10-28 09:20:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:09,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:09,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:09,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:20:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:09,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:20:09,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:09,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082833238] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:09,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:09,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-28 09:20:09,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54384336] [2021-10-28 09:20:09,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:20:09,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:20:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:20:09,896 INFO L87 Difference]: Start difference. First operand 30 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2021-10-28 09:20:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:09,999 INFO L93 Difference]: Finished difference Result 67 states and 97 transitions. [2021-10-28 09:20:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:20:10,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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 15 [2021-10-28 09:20:10,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:10,001 INFO L225 Difference]: With dead ends: 67 [2021-10-28 09:20:10,002 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 09:20:10,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:20:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 09:20:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-10-28 09:20:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2021-10-28 09:20:10,011 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 15 [2021-10-28 09:20:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:10,011 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2021-10-28 09:20:10,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2021-10-28 09:20:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2021-10-28 09:20:10,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:20:10,013 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:10,013 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:10,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:10,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:10,229 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 730990835, now seen corresponding path program 2 times [2021-10-28 09:20:10,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:10,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616706051] [2021-10-28 09:20:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:10,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:10,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:10,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616706051] [2021-10-28 09:20:10,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616706051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:10,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71743713] [2021-10-28 09:20:10,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:10,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:10,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:10,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:10,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:20:10,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:10,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:10,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:20:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:20:10,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71743713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:10,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:10,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 09:20:10,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270829558] [2021-10-28 09:20:10,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:20:10,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:20:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:20:10,611 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:10,868 INFO L93 Difference]: Finished difference Result 123 states and 179 transitions. [2021-10-28 09:20:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:20:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 18 [2021-10-28 09:20:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:10,871 INFO L225 Difference]: With dead ends: 123 [2021-10-28 09:20:10,871 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:20:10,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:20:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:20:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 09:20:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2021-10-28 09:20:10,887 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 18 [2021-10-28 09:20:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:10,888 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2021-10-28 09:20:10,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2021-10-28 09:20:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:20:10,890 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:10,890 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:10,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:11,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:11,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash -104466575, now seen corresponding path program 1 times [2021-10-28 09:20:11,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:11,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993887041] [2021-10-28 09:20:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:11,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:11,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:11,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993887041] [2021-10-28 09:20:11,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993887041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:11,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837878563] [2021-10-28 09:20:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:11,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:11,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:11,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:11,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:20:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:11,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:20:11,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:11,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837878563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:11,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:11,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-28 09:20:11,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671428865] [2021-10-28 09:20:11,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:20:11,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:20:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:20:11,608 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) 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) [2021-10-28 09:20:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:11,708 INFO L93 Difference]: Finished difference Result 199 states and 267 transitions. [2021-10-28 09:20:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:20:11,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) 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 21 [2021-10-28 09:20:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:11,715 INFO L225 Difference]: With dead ends: 199 [2021-10-28 09:20:11,719 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:20:11,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:20:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:20:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 88. [2021-10-28 09:20:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 87 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2021-10-28 09:20:11,754 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 21 [2021-10-28 09:20:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:11,755 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2021-10-28 09:20:11,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) 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) [2021-10-28 09:20:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2021-10-28 09:20:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:20:11,757 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:11,757 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:11,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:11,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:11,968 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:11,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1399176113, now seen corresponding path program 2 times [2021-10-28 09:20:11,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:11,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322783311] [2021-10-28 09:20:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:11,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:12,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:12,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322783311] [2021-10-28 09:20:12,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322783311] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:12,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747740207] [2021-10-28 09:20:12,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:12,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:12,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:12,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:12,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:20:12,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:12,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:12,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:20:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:20:12,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747740207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:12,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:12,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-28 09:20:12,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928876941] [2021-10-28 09:20:12,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:20:12,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:20:12,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:20:12,451 INFO L87 Difference]: Start difference. First operand 88 states and 117 transitions. Second operand has 12 states, 12 states have (on average 3.0) 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) [2021-10-28 09:20:12,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:12,769 INFO L93 Difference]: Finished difference Result 291 states and 403 transitions. [2021-10-28 09:20:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:20:12,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) 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 24 [2021-10-28 09:20:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:12,781 INFO L225 Difference]: With dead ends: 291 [2021-10-28 09:20:12,781 INFO L226 Difference]: Without dead ends: 207 [2021-10-28 09:20:12,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:20:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-28 09:20:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 146. [2021-10-28 09:20:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.3379310344827586) internal successors, (194), 145 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 194 transitions. [2021-10-28 09:20:12,835 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 194 transitions. Word has length 24 [2021-10-28 09:20:12,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:12,836 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 194 transitions. [2021-10-28 09:20:12,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) 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) [2021-10-28 09:20:12,837 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 194 transitions. [2021-10-28 09:20:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:20:12,839 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:12,839 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:12,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:13,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:13,064 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:13,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2084547665, now seen corresponding path program 3 times [2021-10-28 09:20:13,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:13,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767430687] [2021-10-28 09:20:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:13,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:13,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:13,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767430687] [2021-10-28 09:20:13,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767430687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:13,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014985529] [2021-10-28 09:20:13,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:20:13,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:13,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:13,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:13,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:20:13,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:20:13,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:20:13,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 09:20:13,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014985529] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:13,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:20:13,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-10-28 09:20:13,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170189226] [2021-10-28 09:20:13,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:20:13,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:20:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:20:13,400 INFO L87 Difference]: Start difference. First operand 146 states and 194 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:13,466 INFO L93 Difference]: Finished difference Result 334 states and 446 transitions. [2021-10-28 09:20:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:20:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 27 [2021-10-28 09:20:13,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:13,468 INFO L225 Difference]: With dead ends: 334 [2021-10-28 09:20:13,469 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 09:20:13,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:20:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 09:20:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 164. [2021-10-28 09:20:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2392638036809815) internal successors, (202), 163 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 202 transitions. [2021-10-28 09:20:13,489 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 202 transitions. Word has length 27 [2021-10-28 09:20:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:13,490 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 202 transitions. [2021-10-28 09:20:13,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 202 transitions. [2021-10-28 09:20:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:20:13,492 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:13,492 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:13,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:13,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:13,720 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:13,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1868779761, now seen corresponding path program 1 times [2021-10-28 09:20:13,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:13,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83240894] [2021-10-28 09:20:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:13,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-28 09:20:13,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:13,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83240894] [2021-10-28 09:20:13,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83240894] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:13,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:13,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:20:13,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227029165] [2021-10-28 09:20:13,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:20:13,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:20:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:20:13,804 INFO L87 Difference]: Start difference. First operand 164 states and 202 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-28 09:20:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:13,838 INFO L93 Difference]: Finished difference Result 336 states and 416 transitions. [2021-10-28 09:20:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:20:13,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 27 [2021-10-28 09:20:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:13,841 INFO L225 Difference]: With dead ends: 336 [2021-10-28 09:20:13,841 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 09:20:13,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:20:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 09:20:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 162. [2021-10-28 09:20:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.2173913043478262) internal successors, (196), 161 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2021-10-28 09:20:13,863 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 27 [2021-10-28 09:20:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:13,866 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2021-10-28 09:20:13,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-28 09:20:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2021-10-28 09:20:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:20:13,876 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:13,877 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:13,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:20:13,879 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1325275563, now seen corresponding path program 1 times [2021-10-28 09:20:13,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:13,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525341398] [2021-10-28 09:20:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:13,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:14,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:14,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525341398] [2021-10-28 09:20:14,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525341398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:14,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827340634] [2021-10-28 09:20:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:14,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:14,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:14,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:14,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:20:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:14,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:20:14,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:14,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827340634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:14,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:14,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-28 09:20:14,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950158344] [2021-10-28 09:20:14,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:20:14,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:20:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:20:14,373 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:14,490 INFO L93 Difference]: Finished difference Result 449 states and 539 transitions. [2021-10-28 09:20:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:20:14,491 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 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 28 [2021-10-28 09:20:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:14,494 INFO L225 Difference]: With dead ends: 449 [2021-10-28 09:20:14,494 INFO L226 Difference]: Without dead ends: 291 [2021-10-28 09:20:14,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:20:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-28 09:20:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 192. [2021-10-28 09:20:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 191 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:14,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 230 transitions. [2021-10-28 09:20:14,517 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 230 transitions. Word has length 28 [2021-10-28 09:20:14,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:14,518 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 230 transitions. [2021-10-28 09:20:14,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 230 transitions. [2021-10-28 09:20:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:20:14,520 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:14,520 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:14,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:14,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:14,736 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 399501479, now seen corresponding path program 2 times [2021-10-28 09:20:14,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:14,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932196399] [2021-10-28 09:20:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:14,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:14,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:14,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932196399] [2021-10-28 09:20:14,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932196399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:14,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849701474] [2021-10-28 09:20:14,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:14,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:14,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:14,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:14,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:20:14,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:14,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:14,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:20:14,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:15,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849701474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:15,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:15,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-28 09:20:15,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165656041] [2021-10-28 09:20:15,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:20:15,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:20:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:20:15,322 INFO L87 Difference]: Start difference. First operand 192 states and 230 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:15,479 INFO L93 Difference]: Finished difference Result 509 states and 607 transitions. [2021-10-28 09:20:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:20:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 31 [2021-10-28 09:20:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:15,483 INFO L225 Difference]: With dead ends: 509 [2021-10-28 09:20:15,483 INFO L226 Difference]: Without dead ends: 321 [2021-10-28 09:20:15,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:20:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-28 09:20:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 222. [2021-10-28 09:20:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.1945701357466063) internal successors, (264), 221 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 264 transitions. [2021-10-28 09:20:15,505 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 264 transitions. Word has length 31 [2021-10-28 09:20:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:15,506 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 264 transitions. [2021-10-28 09:20:15,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 264 transitions. [2021-10-28 09:20:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:20:15,507 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:15,508 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:15,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:15,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:15,740 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1351227349, now seen corresponding path program 3 times [2021-10-28 09:20:15,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:15,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998858825] [2021-10-28 09:20:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:15,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:15,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:15,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998858825] [2021-10-28 09:20:15,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998858825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:15,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893992908] [2021-10-28 09:20:15,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:20:15,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:15,861 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:15,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:20:16,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:20:16,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:16,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:20:16,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-28 09:20:16,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893992908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:16,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:20:16,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2021-10-28 09:20:16,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640762431] [2021-10-28 09:20:16,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:20:16,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:20:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:20:16,163 INFO L87 Difference]: Start difference. First operand 222 states and 264 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:16,258 INFO L93 Difference]: Finished difference Result 225 states and 266 transitions. [2021-10-28 09:20:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:20:16,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 34 [2021-10-28 09:20:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:16,261 INFO L225 Difference]: With dead ends: 225 [2021-10-28 09:20:16,261 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 09:20:16,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:20:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 09:20:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-10-28 09:20:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 163 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 197 transitions. [2021-10-28 09:20:16,288 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 197 transitions. Word has length 34 [2021-10-28 09:20:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:16,288 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 197 transitions. [2021-10-28 09:20:16,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 197 transitions. [2021-10-28 09:20:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:20:16,290 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:16,290 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:16,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:16,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:20:16,514 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1860700439, now seen corresponding path program 1 times [2021-10-28 09:20:16,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:16,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050773296] [2021-10-28 09:20:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:16,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:16,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:16,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050773296] [2021-10-28 09:20:16,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050773296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:16,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844516636] [2021-10-28 09:20:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:16,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:16,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:16,662 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:16,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:20:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:16,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:20:16,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:17,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844516636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:17,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:17,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-28 09:20:17,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814070459] [2021-10-28 09:20:17,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:20:17,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:20:17,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:20:17,203 INFO L87 Difference]: Start difference. First operand 164 states and 197 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:17,362 INFO L93 Difference]: Finished difference Result 443 states and 529 transitions. [2021-10-28 09:20:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:20:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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 34 [2021-10-28 09:20:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:17,365 INFO L225 Difference]: With dead ends: 443 [2021-10-28 09:20:17,366 INFO L226 Difference]: Without dead ends: 283 [2021-10-28 09:20:17,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:20:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-28 09:20:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 188. [2021-10-28 09:20:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.2032085561497325) internal successors, (225), 187 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 225 transitions. [2021-10-28 09:20:17,385 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 225 transitions. Word has length 34 [2021-10-28 09:20:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 225 transitions. [2021-10-28 09:20:17,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 225 transitions. [2021-10-28 09:20:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:20:17,388 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:17,388 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:17,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:17,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:17,608 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1470700201, now seen corresponding path program 2 times [2021-10-28 09:20:17,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:17,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17293951] [2021-10-28 09:20:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:17,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:17,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:17,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17293951] [2021-10-28 09:20:17,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17293951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:17,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029947178] [2021-10-28 09:20:17,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:17,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:17,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:17,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:17,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:20:17,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:17,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:17,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:20:17,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:18,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029947178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:18,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:18,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-28 09:20:18,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051435581] [2021-10-28 09:20:18,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:20:18,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:20:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:20:18,375 INFO L87 Difference]: Start difference. First operand 188 states and 225 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:18,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:18,542 INFO L93 Difference]: Finished difference Result 491 states and 585 transitions. [2021-10-28 09:20:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:20:18,542 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 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 37 [2021-10-28 09:20:18,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:18,546 INFO L225 Difference]: With dead ends: 491 [2021-10-28 09:20:18,546 INFO L226 Difference]: Without dead ends: 307 [2021-10-28 09:20:18,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:20:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-10-28 09:20:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 212. [2021-10-28 09:20:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.1990521327014219) internal successors, (253), 211 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 253 transitions. [2021-10-28 09:20:18,572 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 253 transitions. Word has length 37 [2021-10-28 09:20:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:18,572 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 253 transitions. [2021-10-28 09:20:18,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 253 transitions. [2021-10-28 09:20:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 09:20:18,574 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:18,574 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:18,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:18,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:20:18,800 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:18,801 INFO L85 PathProgramCache]: Analyzing trace with hash -877109527, now seen corresponding path program 3 times [2021-10-28 09:20:18,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:18,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806103981] [2021-10-28 09:20:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:18,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:18,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:18,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806103981] [2021-10-28 09:20:18,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806103981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:18,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813016477] [2021-10-28 09:20:18,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:20:18,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:18,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:18,946 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:18,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:20:19,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:20:19,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:20:19,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-28 09:20:19,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813016477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:19,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:20:19,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2021-10-28 09:20:19,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968407922] [2021-10-28 09:20:19,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:20:19,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:20:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:20:19,722 INFO L87 Difference]: Start difference. First operand 212 states and 253 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-10-28 09:20:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:19,872 INFO L93 Difference]: Finished difference Result 486 states and 576 transitions. [2021-10-28 09:20:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:20:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 40 [2021-10-28 09:20:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:19,877 INFO L225 Difference]: With dead ends: 486 [2021-10-28 09:20:19,877 INFO L226 Difference]: Without dead ends: 484 [2021-10-28 09:20:19,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:20:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-28 09:20:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 300. [2021-10-28 09:20:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.1872909698996656) internal successors, (355), 299 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 355 transitions. [2021-10-28 09:20:19,909 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 355 transitions. Word has length 40 [2021-10-28 09:20:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:19,910 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 355 transitions. [2021-10-28 09:20:19,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-10-28 09:20:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 355 transitions. [2021-10-28 09:20:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 09:20:19,911 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:19,912 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:19,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:20,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 09:20:20,136 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1952423639, now seen corresponding path program 1 times [2021-10-28 09:20:20,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:20,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446857947] [2021-10-28 09:20:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:20,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-28 09:20:20,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:20,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446857947] [2021-10-28 09:20:20,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446857947] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:20,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:20,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:20:20,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706245388] [2021-10-28 09:20:20,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:20:20,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:20:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:20:20,172 INFO L87 Difference]: Start difference. First operand 300 states and 355 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:20,208 INFO L93 Difference]: Finished difference Result 427 states and 509 transitions. [2021-10-28 09:20:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:20:20,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-28 09:20:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:20,211 INFO L225 Difference]: With dead ends: 427 [2021-10-28 09:20:20,212 INFO L226 Difference]: Without dead ends: 319 [2021-10-28 09:20:20,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:20:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-10-28 09:20:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 306. [2021-10-28 09:20:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.1836065573770491) internal successors, (361), 305 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 361 transitions. [2021-10-28 09:20:20,255 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 361 transitions. Word has length 40 [2021-10-28 09:20:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:20,256 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 361 transitions. [2021-10-28 09:20:20,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 361 transitions. [2021-10-28 09:20:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 09:20:20,257 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:20,257 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:20,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:20:20,258 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1950517015, now seen corresponding path program 1 times [2021-10-28 09:20:20,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:20,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457478808] [2021-10-28 09:20:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:20,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:20,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:20,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457478808] [2021-10-28 09:20:20,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457478808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:20,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508292460] [2021-10-28 09:20:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:20,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:20,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:20,424 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:20,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:20:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:20,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:20:20,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:21,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508292460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:21,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:21,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-28 09:20:21,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31994714] [2021-10-28 09:20:21,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:20:21,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:20:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:20:21,099 INFO L87 Difference]: Start difference. First operand 306 states and 361 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:21,219 INFO L93 Difference]: Finished difference Result 669 states and 793 transitions. [2021-10-28 09:20:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:20:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 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 40 [2021-10-28 09:20:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:21,223 INFO L225 Difference]: With dead ends: 669 [2021-10-28 09:20:21,223 INFO L226 Difference]: Without dead ends: 439 [2021-10-28 09:20:21,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:20:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-28 09:20:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 339. [2021-10-28 09:20:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.180473372781065) internal successors, (399), 338 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 399 transitions. [2021-10-28 09:20:21,261 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 399 transitions. Word has length 40 [2021-10-28 09:20:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:21,261 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 399 transitions. [2021-10-28 09:20:21,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 399 transitions. [2021-10-28 09:20:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-28 09:20:21,262 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:21,263 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:21,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:21,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:20:21,484 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:21,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash -658324379, now seen corresponding path program 2 times [2021-10-28 09:20:21,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:21,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311501849] [2021-10-28 09:20:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:21,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:21,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:21,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311501849] [2021-10-28 09:20:21,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311501849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:21,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782728757] [2021-10-28 09:20:21,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:21,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:21,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:21,644 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:21,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:20:21,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:21,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:21,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:20:21,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-28 09:20:22,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782728757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:22,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:22,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2021-10-28 09:20:22,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186394226] [2021-10-28 09:20:22,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:20:22,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:20:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:20:22,198 INFO L87 Difference]: Start difference. First operand 339 states and 399 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:22,711 INFO L93 Difference]: Finished difference Result 1075 states and 1251 transitions. [2021-10-28 09:20:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-28 09:20:22,712 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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 43 [2021-10-28 09:20:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:22,716 INFO L225 Difference]: With dead ends: 1075 [2021-10-28 09:20:22,717 INFO L226 Difference]: Without dead ends: 821 [2021-10-28 09:20:22,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=486, Invalid=996, Unknown=0, NotChecked=0, Total=1482 [2021-10-28 09:20:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-10-28 09:20:22,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 333. [2021-10-28 09:20:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.1686746987951808) internal successors, (388), 332 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 388 transitions. [2021-10-28 09:20:22,754 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 388 transitions. Word has length 43 [2021-10-28 09:20:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:22,755 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 388 transitions. [2021-10-28 09:20:22,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 388 transitions. [2021-10-28 09:20:22,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:20:22,756 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:22,757 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:22,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:22,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:22,976 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1311604647, now seen corresponding path program 3 times [2021-10-28 09:20:22,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:22,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071666492] [2021-10-28 09:20:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:22,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:23,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:23,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071666492] [2021-10-28 09:20:23,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071666492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:23,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662114571] [2021-10-28 09:20:23,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:20:23,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:23,136 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:23,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:20:23,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:20:23,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:23,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:20:23,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-28 09:20:23,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662114571] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:23,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:20:23,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2021-10-28 09:20:23,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091512897] [2021-10-28 09:20:23,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:20:23,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:20:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:20:23,918 INFO L87 Difference]: Start difference. First operand 333 states and 388 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-10-28 09:20:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:24,119 INFO L93 Difference]: Finished difference Result 442 states and 513 transitions. [2021-10-28 09:20:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:20:24,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 46 [2021-10-28 09:20:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:24,123 INFO L225 Difference]: With dead ends: 442 [2021-10-28 09:20:24,123 INFO L226 Difference]: Without dead ends: 440 [2021-10-28 09:20:24,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:20:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-28 09:20:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 333. [2021-10-28 09:20:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.1686746987951808) internal successors, (388), 332 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 388 transitions. [2021-10-28 09:20:24,169 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 388 transitions. Word has length 46 [2021-10-28 09:20:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:24,170 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 388 transitions. [2021-10-28 09:20:24,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-10-28 09:20:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 388 transitions. [2021-10-28 09:20:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:20:24,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:24,171 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:24,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-28 09:20:24,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:24,384 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -53609623, now seen corresponding path program 1 times [2021-10-28 09:20:24,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:24,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538857674] [2021-10-28 09:20:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:24,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-10-28 09:20:24,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:24,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538857674] [2021-10-28 09:20:24,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538857674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:24,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:24,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:20:24,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238558171] [2021-10-28 09:20:24,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:20:24,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:24,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:20:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:20:24,468 INFO L87 Difference]: Start difference. First operand 333 states and 388 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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) [2021-10-28 09:20:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:24,539 INFO L93 Difference]: Finished difference Result 561 states and 655 transitions. [2021-10-28 09:20:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:20:24,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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 46 [2021-10-28 09:20:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:24,543 INFO L225 Difference]: With dead ends: 561 [2021-10-28 09:20:24,543 INFO L226 Difference]: Without dead ends: 448 [2021-10-28 09:20:24,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:20:24,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-28 09:20:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 400. [2021-10-28 09:20:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.1754385964912282) internal successors, (469), 399 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 469 transitions. [2021-10-28 09:20:24,589 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 469 transitions. Word has length 46 [2021-10-28 09:20:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:24,589 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 469 transitions. [2021-10-28 09:20:24,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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) [2021-10-28 09:20:24,590 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 469 transitions. [2021-10-28 09:20:24,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-28 09:20:24,591 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:24,591 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 20, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:24,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 09:20:24,592 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:24,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1284068705, now seen corresponding path program 1 times [2021-10-28 09:20:24,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:24,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407550840] [2021-10-28 09:20:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:24,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 387 proven. 176 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-10-28 09:20:24,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:24,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407550840] [2021-10-28 09:20:24,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407550840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:24,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152389882] [2021-10-28 09:20:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:24,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:24,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:24,819 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:24,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:20:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:25,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:20:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 387 proven. 176 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-10-28 09:20:25,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152389882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:25,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:25,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-10-28 09:20:25,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182994605] [2021-10-28 09:20:25,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-28 09:20:25,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-28 09:20:25,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=417, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:20:25,835 INFO L87 Difference]: Start difference. First operand 400 states and 469 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:26,151 INFO L93 Difference]: Finished difference Result 1102 states and 1266 transitions. [2021-10-28 09:20:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:20:26,152 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 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 87 [2021-10-28 09:20:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:26,158 INFO L225 Difference]: With dead ends: 1102 [2021-10-28 09:20:26,158 INFO L226 Difference]: Without dead ends: 793 [2021-10-28 09:20:26,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=285, Invalid=417, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:20:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-10-28 09:20:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 439. [2021-10-28 09:20:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.17351598173516) internal successors, (514), 438 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 514 transitions. [2021-10-28 09:20:26,216 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 514 transitions. Word has length 87 [2021-10-28 09:20:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:26,217 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 514 transitions. [2021-10-28 09:20:26,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 514 transitions. [2021-10-28 09:20:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 09:20:26,226 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:26,226 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 22, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:26,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:26,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:26,452 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:26,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1856213775, now seen corresponding path program 2 times [2021-10-28 09:20:26,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:26,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583509977] [2021-10-28 09:20:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:26,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 458 proven. 210 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-10-28 09:20:26,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:26,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583509977] [2021-10-28 09:20:26,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583509977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:26,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953539161] [2021-10-28 09:20:26,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:26,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:26,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:26,694 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:26,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:20:27,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:27,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:27,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:20:27,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 458 proven. 210 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-10-28 09:20:27,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953539161] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:27,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:27,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-10-28 09:20:27,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689777673] [2021-10-28 09:20:27,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-28 09:20:27,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-28 09:20:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2021-10-28 09:20:27,692 INFO L87 Difference]: Start difference. First operand 439 states and 514 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:28,092 INFO L93 Difference]: Finished difference Result 1171 states and 1346 transitions. [2021-10-28 09:20:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:20:28,093 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 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 93 [2021-10-28 09:20:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:28,098 INFO L225 Difference]: With dead ends: 1171 [2021-10-28 09:20:28,099 INFO L226 Difference]: Without dead ends: 832 [2021-10-28 09:20:28,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2021-10-28 09:20:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-10-28 09:20:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 478. [2021-10-28 09:20:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.1719077568134173) internal successors, (559), 477 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 559 transitions. [2021-10-28 09:20:28,168 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 559 transitions. Word has length 93 [2021-10-28 09:20:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:28,169 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 559 transitions. [2021-10-28 09:20:28,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 559 transitions. [2021-10-28 09:20:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 09:20:28,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:28,172 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 24, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:28,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:28,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:28,391 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash -267019423, now seen corresponding path program 3 times [2021-10-28 09:20:28,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:28,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863802228] [2021-10-28 09:20:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:28,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 535 proven. 247 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-10-28 09:20:28,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:28,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863802228] [2021-10-28 09:20:28,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863802228] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:28,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152831539] [2021-10-28 09:20:28,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:20:28,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:28,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:28,644 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:28,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:20:29,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:20:29,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:29,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:20:29,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 37 proven. 541 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2021-10-28 09:20:30,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152831539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:30,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:30,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 24 [2021-10-28 09:20:30,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127772605] [2021-10-28 09:20:30,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-28 09:20:30,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-28 09:20:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:20:30,222 INFO L87 Difference]: Start difference. First operand 478 states and 559 transitions. Second operand has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:32,364 INFO L93 Difference]: Finished difference Result 2208 states and 2540 transitions. [2021-10-28 09:20:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-28 09:20:32,365 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 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 99 [2021-10-28 09:20:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:32,378 INFO L225 Difference]: With dead ends: 2208 [2021-10-28 09:20:32,378 INFO L226 Difference]: Without dead ends: 1839 [2021-10-28 09:20:32,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1574, Invalid=5908, Unknown=0, NotChecked=0, Total=7482 [2021-10-28 09:20:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-10-28 09:20:32,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 770. [2021-10-28 09:20:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.1716514954486346) internal successors, (901), 769 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 901 transitions. [2021-10-28 09:20:32,518 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 901 transitions. Word has length 99 [2021-10-28 09:20:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:32,518 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 901 transitions. [2021-10-28 09:20:32,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 901 transitions. [2021-10-28 09:20:32,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 09:20:32,522 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:32,522 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 24, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:32,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:32,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-28 09:20:32,748 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -111346257, now seen corresponding path program 1 times [2021-10-28 09:20:32,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:32,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830595578] [2021-10-28 09:20:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:32,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 49 proven. 861 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-28 09:20:33,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:33,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830595578] [2021-10-28 09:20:33,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830595578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:33,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032906296] [2021-10-28 09:20:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:33,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:33,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:33,024 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:33,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:20:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:20:33,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 618 proven. 287 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-10-28 09:20:34,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032906296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:34,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:34,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-10-28 09:20:34,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930747967] [2021-10-28 09:20:34,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-28 09:20:34,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-28 09:20:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:20:34,458 INFO L87 Difference]: Start difference. First operand 770 states and 901 transitions. Second operand has 33 states, 33 states have (on average 3.606060606060606) internal successors, (119), 32 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:35,008 INFO L93 Difference]: Finished difference Result 1968 states and 2264 transitions. [2021-10-28 09:20:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:20:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.606060606060606) internal successors, (119), 32 states have internal predecessors, (119), 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 105 [2021-10-28 09:20:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:35,018 INFO L225 Difference]: With dead ends: 1968 [2021-10-28 09:20:35,018 INFO L226 Difference]: Without dead ends: 1316 [2021-10-28 09:20:35,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:20:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-10-28 09:20:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 809. [2021-10-28 09:20:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.1707920792079207) internal successors, (946), 808 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 946 transitions. [2021-10-28 09:20:35,176 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 946 transitions. Word has length 105 [2021-10-28 09:20:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:35,177 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 946 transitions. [2021-10-28 09:20:35,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.606060606060606) internal successors, (119), 32 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 946 transitions. [2021-10-28 09:20:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-28 09:20:35,180 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:35,181 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 26, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:35,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:35,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-28 09:20:35,408 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:35,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 802849635, now seen corresponding path program 2 times [2021-10-28 09:20:35,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:35,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382992032] [2021-10-28 09:20:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:35,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 52 proven. 990 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-10-28 09:20:35,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:35,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382992032] [2021-10-28 09:20:35,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382992032] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:35,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999804182] [2021-10-28 09:20:35,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:35,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:35,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:35,716 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:35,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:20:36,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:36,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:36,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:20:36,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 707 proven. 330 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-10-28 09:20:37,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999804182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:37,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:37,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-28 09:20:37,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261654803] [2021-10-28 09:20:37,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-28 09:20:37,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-28 09:20:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 09:20:37,197 INFO L87 Difference]: Start difference. First operand 809 states and 946 transitions. Second operand has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 34 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:37,777 INFO L93 Difference]: Finished difference Result 2078 states and 2393 transitions. [2021-10-28 09:20:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:20:37,778 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 34 states have internal predecessors, (125), 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 111 [2021-10-28 09:20:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:37,788 INFO L225 Difference]: With dead ends: 2078 [2021-10-28 09:20:37,788 INFO L226 Difference]: Without dead ends: 1396 [2021-10-28 09:20:37,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 09:20:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-10-28 09:20:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 866. [2021-10-28 09:20:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.169942196531792) internal successors, (1012), 865 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1012 transitions. [2021-10-28 09:20:37,988 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1012 transitions. Word has length 111 [2021-10-28 09:20:37,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:37,988 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1012 transitions. [2021-10-28 09:20:37,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 34 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1012 transitions. [2021-10-28 09:20:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 09:20:37,992 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:37,993 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 28, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:38,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:38,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-28 09:20:38,208 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash -780287697, now seen corresponding path program 3 times [2021-10-28 09:20:38,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:38,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669141995] [2021-10-28 09:20:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:38,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 55 proven. 1128 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-10-28 09:20:38,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:38,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669141995] [2021-10-28 09:20:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669141995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:38,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727668436] [2021-10-28 09:20:38,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:20:38,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:38,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:38,482 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:38,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:20:38,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:20:38,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:38,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:20:38,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 807 proven. 47 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2021-10-28 09:20:39,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727668436] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:39,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:39,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 25 [2021-10-28 09:20:39,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503280978] [2021-10-28 09:20:39,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:20:39,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:20:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:20:39,386 INFO L87 Difference]: Start difference. First operand 866 states and 1012 transitions. Second operand has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:41,331 INFO L93 Difference]: Finished difference Result 1933 states and 2278 transitions. [2021-10-28 09:20:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-28 09:20:41,332 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 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 117 [2021-10-28 09:20:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:41,339 INFO L225 Difference]: With dead ends: 1933 [2021-10-28 09:20:41,339 INFO L226 Difference]: Without dead ends: 1203 [2021-10-28 09:20:41,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1816, Invalid=4990, Unknown=0, NotChecked=0, Total=6806 [2021-10-28 09:20:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-28 09:20:41,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 794. [2021-10-28 09:20:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.1235813366960907) internal successors, (891), 793 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 891 transitions. [2021-10-28 09:20:41,453 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 891 transitions. Word has length 117 [2021-10-28 09:20:41,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:41,453 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 891 transitions. [2021-10-28 09:20:41,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 891 transitions. [2021-10-28 09:20:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-28 09:20:41,456 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:41,457 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 20, 14, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:41,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:41,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 09:20:41,672 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:41,673 INFO L85 PathProgramCache]: Analyzing trace with hash 838744801, now seen corresponding path program 1 times [2021-10-28 09:20:41,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:41,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830532221] [2021-10-28 09:20:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:41,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 984 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2021-10-28 09:20:41,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:41,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830532221] [2021-10-28 09:20:41,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830532221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:41,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:41,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:20:41,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147526443] [2021-10-28 09:20:41,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:20:41,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:20:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:20:41,754 INFO L87 Difference]: Start difference. First operand 794 states and 891 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:41,928 INFO L93 Difference]: Finished difference Result 1253 states and 1372 transitions. [2021-10-28 09:20:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:20:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 123 [2021-10-28 09:20:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:41,934 INFO L225 Difference]: With dead ends: 1253 [2021-10-28 09:20:41,934 INFO L226 Difference]: Without dead ends: 1051 [2021-10-28 09:20:41,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:20:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-10-28 09:20:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 803. [2021-10-28 09:20:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.125935162094763) internal successors, (903), 802 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 903 transitions. [2021-10-28 09:20:42,073 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 903 transitions. Word has length 123 [2021-10-28 09:20:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:42,073 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 903 transitions. [2021-10-28 09:20:42,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 903 transitions. [2021-10-28 09:20:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-28 09:20:42,076 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:42,077 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 19, 15, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:42,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 09:20:42,077 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1273355935, now seen corresponding path program 4 times [2021-10-28 09:20:42,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:42,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367394562] [2021-10-28 09:20:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:42,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 903 proven. 425 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-10-28 09:20:42,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:42,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367394562] [2021-10-28 09:20:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367394562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:42,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856069163] [2021-10-28 09:20:42,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:20:42,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:42,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:42,382 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:42,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:20:42,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:20:42,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:42,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:20:42,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 1033 proven. 206 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-28 09:20:43,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856069163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:43,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:43,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 30 [2021-10-28 09:20:43,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558771001] [2021-10-28 09:20:43,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-28 09:20:43,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-28 09:20:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:20:43,426 INFO L87 Difference]: Start difference. First operand 803 states and 903 transitions. Second operand has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 30 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:44,820 INFO L93 Difference]: Finished difference Result 1871 states and 2087 transitions. [2021-10-28 09:20:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-28 09:20:44,821 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 30 states have internal predecessors, (110), 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 123 [2021-10-28 09:20:44,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:44,826 INFO L225 Difference]: With dead ends: 1871 [2021-10-28 09:20:44,827 INFO L226 Difference]: Without dead ends: 1215 [2021-10-28 09:20:44,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1937, Invalid=5035, Unknown=0, NotChecked=0, Total=6972 [2021-10-28 09:20:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-10-28 09:20:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 793. [2021-10-28 09:20:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.1161616161616161) internal successors, (884), 792 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 884 transitions. [2021-10-28 09:20:44,939 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 884 transitions. Word has length 123 [2021-10-28 09:20:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:44,939 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 884 transitions. [2021-10-28 09:20:44,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 30 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 884 transitions. [2021-10-28 09:20:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-28 09:20:44,941 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:44,941 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 21, 15, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:44,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 09:20:45,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 09:20:45,156 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1151168365, now seen corresponding path program 5 times [2021-10-28 09:20:45,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:45,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714303829] [2021-10-28 09:20:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:45,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1010 proven. 477 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-10-28 09:20:45,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:45,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714303829] [2021-10-28 09:20:45,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714303829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:45,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174561551] [2021-10-28 09:20:45,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:20:45,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:45,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:45,458 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:45,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:20:46,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2021-10-28 09:20:46,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:46,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 09:20:46,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1257 proven. 451 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-10-28 09:20:47,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174561551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:47,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:47,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 45 [2021-10-28 09:20:47,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827483119] [2021-10-28 09:20:47,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-28 09:20:47,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-28 09:20:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1553, Unknown=0, NotChecked=0, Total=1980 [2021-10-28 09:20:47,166 INFO L87 Difference]: Start difference. First operand 793 states and 884 transitions. Second operand has 45 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 45 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:48,926 INFO L93 Difference]: Finished difference Result 1897 states and 2110 transitions. [2021-10-28 09:20:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-28 09:20:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 45 states have internal predecessors, (155), 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 129 [2021-10-28 09:20:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:48,933 INFO L225 Difference]: With dead ends: 1897 [2021-10-28 09:20:48,933 INFO L226 Difference]: Without dead ends: 1251 [2021-10-28 09:20:48,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2803 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2325, Invalid=7977, Unknown=0, NotChecked=0, Total=10302 [2021-10-28 09:20:48,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-10-28 09:20:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1003. [2021-10-28 09:20:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.1047904191616766) internal successors, (1107), 1002 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1107 transitions. [2021-10-28 09:20:49,069 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1107 transitions. Word has length 129 [2021-10-28 09:20:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:49,070 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1107 transitions. [2021-10-28 09:20:49,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 45 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1107 transitions. [2021-10-28 09:20:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-28 09:20:49,073 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:49,073 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 23, 15, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:49,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-28 09:20:49,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:49,276 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash 244793185, now seen corresponding path program 6 times [2021-10-28 09:20:49,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:49,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016443890] [2021-10-28 09:20:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:49,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 1123 proven. 532 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-10-28 09:20:49,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:49,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016443890] [2021-10-28 09:20:49,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016443890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:49,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149653919] [2021-10-28 09:20:49,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:20:49,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:49,644 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:49,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:20:50,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-28 09:20:50,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:50,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:20:50,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 247 proven. 1141 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2021-10-28 09:20:51,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149653919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:51,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:51,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9] total 30 [2021-10-28 09:20:51,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010910112] [2021-10-28 09:20:51,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-28 09:20:51,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:51,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-28 09:20:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:20:51,899 INFO L87 Difference]: Start difference. First operand 1003 states and 1107 transitions. Second operand has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:55,075 INFO L93 Difference]: Finished difference Result 2162 states and 2408 transitions. [2021-10-28 09:20:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-28 09:20:55,076 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 states have internal predecessors, (111), 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 135 [2021-10-28 09:20:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:55,081 INFO L225 Difference]: With dead ends: 2162 [2021-10-28 09:20:55,081 INFO L226 Difference]: Without dead ends: 1354 [2021-10-28 09:20:55,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5858 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3764, Invalid=14326, Unknown=0, NotChecked=0, Total=18090 [2021-10-28 09:20:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-10-28 09:20:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1117. [2021-10-28 09:20:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.1155913978494623) internal successors, (1245), 1116 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1245 transitions. [2021-10-28 09:20:55,218 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1245 transitions. Word has length 135 [2021-10-28 09:20:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:55,218 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 1245 transitions. [2021-10-28 09:20:55,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 30 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1245 transitions. [2021-10-28 09:20:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-28 09:20:55,221 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:55,222 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 38, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:55,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-28 09:20:55,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-28 09:20:55,440 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash 525616749, now seen corresponding path program 1 times [2021-10-28 09:20:55,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:20:55,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511759052] [2021-10-28 09:20:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:55,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:20:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 0 proven. 1858 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-10-28 09:20:56,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:20:56,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511759052] [2021-10-28 09:20:56,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511759052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:56,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206303096] [2021-10-28 09:20:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:56,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:56,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:56,186 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:56,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 09:20:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:56,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 09:20:56,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 0 proven. 1838 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-10-28 09:20:59,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206303096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:20:59,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:20:59,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 54 [2021-10-28 09:20:59,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004320207] [2021-10-28 09:20:59,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-28 09:20:59,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:20:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-28 09:20:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2359, Unknown=0, NotChecked=0, Total=2970 [2021-10-28 09:20:59,440 INFO L87 Difference]: Start difference. First operand 1117 states and 1245 transitions. Second operand has 55 states, 55 states have (on average 3.018181818181818) internal successors, (166), 54 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:03,500 INFO L93 Difference]: Finished difference Result 1938 states and 2125 transitions. [2021-10-28 09:21:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-28 09:21:03,501 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.018181818181818) internal successors, (166), 54 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-10-28 09:21:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:03,507 INFO L225 Difference]: With dead ends: 1938 [2021-10-28 09:21:03,507 INFO L226 Difference]: Without dead ends: 1790 [2021-10-28 09:21:03,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5804 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2911, Invalid=16271, Unknown=0, NotChecked=0, Total=19182 [2021-10-28 09:21:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-10-28 09:21:03,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1421. [2021-10-28 09:21:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.1119718309859155) internal successors, (1579), 1420 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1579 transitions. [2021-10-28 09:21:03,652 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1579 transitions. Word has length 141 [2021-10-28 09:21:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:03,653 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 1579 transitions. [2021-10-28 09:21:03,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.018181818181818) internal successors, (166), 54 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:03,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1579 transitions. [2021-10-28 09:21:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-28 09:21:03,656 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:03,656 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 39, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:03,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:21:03,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:03,876 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:03,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 714830123, now seen corresponding path program 2 times [2021-10-28 09:21:03,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:03,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806969475] [2021-10-28 09:21:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:03,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 587 proven. 1841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:21:04,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:04,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806969475] [2021-10-28 09:21:04,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806969475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:04,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763965840] [2021-10-28 09:21:04,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:21:04,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:04,596 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:04,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 09:21:05,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:21:05,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:05,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:21:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 86 proven. 1752 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-10-28 09:21:06,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763965840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:06,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:06,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 23] total 64 [2021-10-28 09:21:06,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491229198] [2021-10-28 09:21:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-28 09:21:06,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-28 09:21:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=3105, Unknown=0, NotChecked=0, Total=4032 [2021-10-28 09:21:06,414 INFO L87 Difference]: Start difference. First operand 1421 states and 1579 transitions. Second operand has 64 states, 64 states have (on average 3.328125) internal successors, (213), 64 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:08,610 INFO L93 Difference]: Finished difference Result 2544 states and 2842 transitions. [2021-10-28 09:21:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-28 09:21:08,611 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.328125) internal successors, (213), 64 states have internal predecessors, (213), 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 141 [2021-10-28 09:21:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:08,618 INFO L225 Difference]: With dead ends: 2544 [2021-10-28 09:21:08,618 INFO L226 Difference]: Without dead ends: 1654 [2021-10-28 09:21:08,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3100, Invalid=12400, Unknown=0, NotChecked=0, Total=15500 [2021-10-28 09:21:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-10-28 09:21:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1640. [2021-10-28 09:21:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 1.0835875533862112) internal successors, (1776), 1639 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 1776 transitions. [2021-10-28 09:21:08,781 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 1776 transitions. Word has length 141 [2021-10-28 09:21:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:08,781 INFO L470 AbstractCegarLoop]: Abstraction has 1640 states and 1776 transitions. [2021-10-28 09:21:08,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.328125) internal successors, (213), 64 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 1776 transitions. [2021-10-28 09:21:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-28 09:21:08,785 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:08,785 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:08,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:21:09,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:09,012 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:09,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2094903851, now seen corresponding path program 1 times [2021-10-28 09:21:09,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:09,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23292811] [2021-10-28 09:21:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:09,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 2 proven. 1246 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2021-10-28 09:21:09,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:09,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23292811] [2021-10-28 09:21:09,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23292811] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:09,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333235399] [2021-10-28 09:21:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:09,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:09,120 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:09,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 09:21:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:10,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:21:10,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 2 proven. 1246 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2021-10-28 09:21:11,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333235399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:11,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:11,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 09:21:11,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151474181] [2021-10-28 09:21:11,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:21:11,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:21:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:21:11,002 INFO L87 Difference]: Start difference. First operand 1640 states and 1776 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:11,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:11,140 INFO L93 Difference]: Finished difference Result 1796 states and 1938 transitions. [2021-10-28 09:21:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:21:11,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 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 141 [2021-10-28 09:21:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:11,147 INFO L225 Difference]: With dead ends: 1796 [2021-10-28 09:21:11,147 INFO L226 Difference]: Without dead ends: 1720 [2021-10-28 09:21:11,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:21:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2021-10-28 09:21:11,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1714. [2021-10-28 09:21:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.0817279626386456) internal successors, (1853), 1713 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 1853 transitions. [2021-10-28 09:21:11,332 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 1853 transitions. Word has length 141 [2021-10-28 09:21:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:11,333 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 1853 transitions. [2021-10-28 09:21:11,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 1853 transitions. [2021-10-28 09:21:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-10-28 09:21:11,336 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:11,336 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 40, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:11,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-28 09:21:11,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-28 09:21:11,551 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash 574504483, now seen corresponding path program 7 times [2021-10-28 09:21:11,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:11,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36097295] [2021-10-28 09:21:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:11,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 701 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:21:12,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:12,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36097295] [2021-10-28 09:21:12,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36097295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:12,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137757137] [2021-10-28 09:21:12,176 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:21:12,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:12,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:12,178 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:12,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 09:21:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:13,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 09:21:13,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 797 proven. 1751 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:21:14,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137757137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:14,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:14,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 65 [2021-10-28 09:21:14,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221766129] [2021-10-28 09:21:14,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-28 09:21:14,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-28 09:21:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2021-10-28 09:21:14,390 INFO L87 Difference]: Start difference. First operand 1714 states and 1853 transitions. Second operand has 65 states, 65 states have (on average 3.230769230769231) internal successors, (210), 65 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:16,560 INFO L93 Difference]: Finished difference Result 2006 states and 2163 transitions. [2021-10-28 09:21:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-10-28 09:21:16,561 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.230769230769231) internal successors, (210), 65 states have internal predecessors, (210), 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 144 [2021-10-28 09:21:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:16,567 INFO L225 Difference]: With dead ends: 2006 [2021-10-28 09:21:16,567 INFO L226 Difference]: Without dead ends: 1701 [2021-10-28 09:21:16,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7016 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5539, Invalid=19583, Unknown=0, NotChecked=0, Total=25122 [2021-10-28 09:21:16,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2021-10-28 09:21:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1566. [2021-10-28 09:21:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 1.0830670926517572) internal successors, (1695), 1565 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1695 transitions. [2021-10-28 09:21:16,747 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1695 transitions. Word has length 144 [2021-10-28 09:21:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:16,748 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 1695 transitions. [2021-10-28 09:21:16,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.230769230769231) internal successors, (210), 65 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1695 transitions. [2021-10-28 09:21:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-10-28 09:21:16,751 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:16,751 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 40, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:16,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:21:16,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-28 09:21:16,972 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1051056613, now seen corresponding path program 3 times [2021-10-28 09:21:16,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:16,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429725291] [2021-10-28 09:21:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:16,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 721 proven. 1238 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-10-28 09:21:17,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:17,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429725291] [2021-10-28 09:21:17,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429725291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:17,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169827536] [2021-10-28 09:21:17,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:21:17,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:17,336 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:17,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 09:21:18,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:21:18,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:18,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:21:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 1350 proven. 20 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2021-10-28 09:21:19,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169827536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:19,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:19,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 4] total 26 [2021-10-28 09:21:19,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075602327] [2021-10-28 09:21:19,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 09:21:19,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 09:21:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=410, Unknown=0, NotChecked=0, Total=650 [2021-10-28 09:21:19,215 INFO L87 Difference]: Start difference. First operand 1566 states and 1695 transitions. Second operand has 26 states, 26 states have (on average 4.153846153846154) internal successors, (108), 26 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:21,060 INFO L93 Difference]: Finished difference Result 2515 states and 2719 transitions. [2021-10-28 09:21:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-28 09:21:21,060 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.153846153846154) internal successors, (108), 26 states have internal predecessors, (108), 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 144 [2021-10-28 09:21:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:21,065 INFO L225 Difference]: With dead ends: 2515 [2021-10-28 09:21:21,065 INFO L226 Difference]: Without dead ends: 1151 [2021-10-28 09:21:21,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2361 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3000, Invalid=8130, Unknown=0, NotChecked=0, Total=11130 [2021-10-28 09:21:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-10-28 09:21:21,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1145. [2021-10-28 09:21:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1144 states have (on average 1.06993006993007) internal successors, (1224), 1144 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1224 transitions. [2021-10-28 09:21:21,197 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1224 transitions. Word has length 144 [2021-10-28 09:21:21,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:21,198 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 1224 transitions. [2021-10-28 09:21:21,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.153846153846154) internal successors, (108), 26 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1224 transitions. [2021-10-28 09:21:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-10-28 09:21:21,202 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:21,202 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 57, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:21,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-28 09:21:21,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 09:21:21,416 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash -668312775, now seen corresponding path program 4 times [2021-10-28 09:21:21,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:21,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453234857] [2021-10-28 09:21:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:21,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 61 proven. 4267 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2021-10-28 09:21:22,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:22,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453234857] [2021-10-28 09:21:22,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453234857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:22,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240981129] [2021-10-28 09:21:22,273 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:21:22,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:22,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:22,274 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:22,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 09:21:23,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:21:23,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:23,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-28 09:21:23,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 532 proven. 4392 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-10-28 09:21:27,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240981129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:27,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:27,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 50] total 75 [2021-10-28 09:21:27,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045893941] [2021-10-28 09:21:27,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-28 09:21:27,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-28 09:21:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=4458, Unknown=0, NotChecked=0, Total=5550 [2021-10-28 09:21:27,211 INFO L87 Difference]: Start difference. First operand 1145 states and 1224 transitions. Second operand has 75 states, 75 states have (on average 3.2133333333333334) internal successors, (241), 75 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:31,101 INFO L93 Difference]: Finished difference Result 1676 states and 1791 transitions. [2021-10-28 09:21:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-28 09:21:31,102 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.2133333333333334) internal successors, (241), 75 states have internal predecessors, (241), 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 209 [2021-10-28 09:21:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:31,105 INFO L225 Difference]: With dead ends: 1676 [2021-10-28 09:21:31,105 INFO L226 Difference]: Without dead ends: 768 [2021-10-28 09:21:31,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10117 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4357, Invalid=23699, Unknown=0, NotChecked=0, Total=28056 [2021-10-28 09:21:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-10-28 09:21:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 346. [2021-10-28 09:21:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.0231884057971015) internal successors, (353), 345 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 353 transitions. [2021-10-28 09:21:31,134 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 353 transitions. Word has length 209 [2021-10-28 09:21:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:31,134 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 353 transitions. [2021-10-28 09:21:31,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.2133333333333334) internal successors, (241), 75 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 353 transitions. [2021-10-28 09:21:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-10-28 09:21:31,135 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:31,136 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:31,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:21:31,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 09:21:31,352 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2084159889, now seen corresponding path program 2 times [2021-10-28 09:21:31,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:31,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122605917] [2021-10-28 09:21:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:31,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 4 proven. 3740 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2021-10-28 09:21:31,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:31,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122605917] [2021-10-28 09:21:31,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122605917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:31,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066528451] [2021-10-28 09:21:31,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:21:31,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:31,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:31,472 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:31,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 09:21:32,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:21:32,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:32,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:21:32,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 4 proven. 3740 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2021-10-28 09:21:34,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066528451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:34,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:34,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-28 09:21:34,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858527107] [2021-10-28 09:21:34,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:21:34,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:21:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:21:34,278 INFO L87 Difference]: Start difference. First operand 346 states and 353 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:34,344 INFO L93 Difference]: Finished difference Result 484 states and 495 transitions. [2021-10-28 09:21:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:21:34,344 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 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 209 [2021-10-28 09:21:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:34,347 INFO L225 Difference]: With dead ends: 484 [2021-10-28 09:21:34,347 INFO L226 Difference]: Without dead ends: 414 [2021-10-28 09:21:34,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:21:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-10-28 09:21:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2021-10-28 09:21:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.0217917675544794) internal successors, (422), 413 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 422 transitions. [2021-10-28 09:21:34,378 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 422 transitions. Word has length 209 [2021-10-28 09:21:34,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:34,378 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 422 transitions. [2021-10-28 09:21:34,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:34,378 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 422 transitions. [2021-10-28 09:21:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-10-28 09:21:34,379 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:34,380 INFO L513 BasicCegarLoop]: trace histogram [80, 80, 80, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:34,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-28 09:21:34,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-28 09:21:34,580 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:34,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1255336115, now seen corresponding path program 3 times [2021-10-28 09:21:34,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:34,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812147210] [2021-10-28 09:21:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:34,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 6 proven. 7482 refuted. 0 times theorem prover too weak. 2360 trivial. 0 not checked. [2021-10-28 09:21:34,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:34,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812147210] [2021-10-28 09:21:34,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812147210] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:34,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962637552] [2021-10-28 09:21:34,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:21:34,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:34,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:34,720 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:34,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 09:21:36,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-10-28 09:21:36,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:36,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:21:36,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 6 proven. 7482 refuted. 0 times theorem prover too weak. 2360 trivial. 0 not checked. [2021-10-28 09:21:38,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962637552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:38,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:38,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-28 09:21:38,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662974473] [2021-10-28 09:21:38,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:21:38,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:38,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:21:38,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:21:38,546 INFO L87 Difference]: Start difference. First operand 414 states and 422 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:38,642 INFO L93 Difference]: Finished difference Result 552 states and 564 transitions. [2021-10-28 09:21:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:21:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 12 states have internal predecessors, (92), 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 277 [2021-10-28 09:21:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:38,645 INFO L225 Difference]: With dead ends: 552 [2021-10-28 09:21:38,645 INFO L226 Difference]: Without dead ends: 482 [2021-10-28 09:21:38,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:21:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-28 09:21:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-10-28 09:21:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.0207900207900207) internal successors, (491), 481 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 491 transitions. [2021-10-28 09:21:38,673 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 491 transitions. Word has length 277 [2021-10-28 09:21:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:38,674 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 491 transitions. [2021-10-28 09:21:38,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 491 transitions. [2021-10-28 09:21:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-10-28 09:21:38,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:38,677 INFO L513 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:38,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-28 09:21:38,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:38,878 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1898663689, now seen corresponding path program 4 times [2021-10-28 09:21:38,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:38,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50997835] [2021-10-28 09:21:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:38,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15430 backedges. 8 proven. 12472 refuted. 0 times theorem prover too weak. 2950 trivial. 0 not checked. [2021-10-28 09:21:39,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:39,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50997835] [2021-10-28 09:21:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50997835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:39,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588279514] [2021-10-28 09:21:39,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:21:39,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:39,063 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:39,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 09:21:41,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:21:41,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:41,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 09:21:41,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15430 backedges. 540 proven. 12530 refuted. 0 times theorem prover too weak. 2360 trivial. 0 not checked. [2021-10-28 09:21:43,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588279514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:43,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:43,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 29] total 36 [2021-10-28 09:21:43,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443009810] [2021-10-28 09:21:43,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-28 09:21:43,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-28 09:21:43,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 09:21:43,908 INFO L87 Difference]: Start difference. First operand 482 states and 491 transitions. Second operand has 36 states, 36 states have (on average 4.833333333333333) internal successors, (174), 36 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:44,543 INFO L93 Difference]: Finished difference Result 621 states and 634 transitions. [2021-10-28 09:21:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-28 09:21:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.833333333333333) internal successors, (174), 36 states have internal predecessors, (174), 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 345 [2021-10-28 09:21:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:44,549 INFO L225 Difference]: With dead ends: 621 [2021-10-28 09:21:44,549 INFO L226 Difference]: Without dead ends: 551 [2021-10-28 09:21:44,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1064, Invalid=2016, Unknown=0, NotChecked=0, Total=3080 [2021-10-28 09:21:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-10-28 09:21:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 550. [2021-10-28 09:21:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 1.0200364298724955) internal successors, (560), 549 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 560 transitions. [2021-10-28 09:21:44,646 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 560 transitions. Word has length 345 [2021-10-28 09:21:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:44,648 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 560 transitions. [2021-10-28 09:21:44,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.833333333333333) internal successors, (174), 36 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 560 transitions. [2021-10-28 09:21:44,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-10-28 09:21:44,651 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:44,651 INFO L513 BasicCegarLoop]: trace histogram [120, 120, 120, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:44,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:21:44,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-28 09:21:44,867 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash 874288955, now seen corresponding path program 5 times [2021-10-28 09:21:44,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:44,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171865821] [2021-10-28 09:21:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:44,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 10 proven. 18710 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2021-10-28 09:21:45,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:45,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171865821] [2021-10-28 09:21:45,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171865821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:45,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960453387] [2021-10-28 09:21:45,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:21:45,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:45,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:45,095 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:45,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 09:21:47,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2021-10-28 09:21:47,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:47,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 09:21:47,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 580 proven. 18730 refuted. 0 times theorem prover too weak. 2950 trivial. 0 not checked. [2021-10-28 09:21:50,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960453387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:50,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:50,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 31] total 39 [2021-10-28 09:21:50,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683515004] [2021-10-28 09:21:50,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-28 09:21:50,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-28 09:21:50,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1089, Unknown=0, NotChecked=0, Total=1482 [2021-10-28 09:21:50,423 INFO L87 Difference]: Start difference. First operand 550 states and 560 transitions. Second operand has 39 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 39 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:51,378 INFO L93 Difference]: Finished difference Result 689 states and 703 transitions. [2021-10-28 09:21:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-28 09:21:51,378 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 39 states have internal predecessors, (196), 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 413 [2021-10-28 09:21:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:51,382 INFO L225 Difference]: With dead ends: 689 [2021-10-28 09:21:51,382 INFO L226 Difference]: Without dead ends: 619 [2021-10-28 09:21:51,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2182, Invalid=4138, Unknown=0, NotChecked=0, Total=6320 [2021-10-28 09:21:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-10-28 09:21:51,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 618. [2021-10-28 09:21:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.019448946515397) internal successors, (629), 617 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 629 transitions. [2021-10-28 09:21:51,418 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 629 transitions. Word has length 413 [2021-10-28 09:21:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:51,419 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 629 transitions. [2021-10-28 09:21:51,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 39 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:51,419 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 629 transitions. [2021-10-28 09:21:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-10-28 09:21:51,421 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:51,422 INFO L513 BasicCegarLoop]: trace histogram [140, 140, 140, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:51,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-28 09:21:51,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-28 09:21:51,622 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2038719617, now seen corresponding path program 6 times [2021-10-28 09:21:51,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:51,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091682557] [2021-10-28 09:21:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:51,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30338 backedges. 12 proven. 26196 refuted. 0 times theorem prover too weak. 4130 trivial. 0 not checked. [2021-10-28 09:21:51,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:51,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091682557] [2021-10-28 09:21:51,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091682557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:51,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590812336] [2021-10-28 09:21:51,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:21:51,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:51,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:51,870 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:51,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 09:21:54,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 65 check-sat command(s) [2021-10-28 09:21:54,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:21:54,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:21:54,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:21:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30338 backedges. 12 proven. 26196 refuted. 0 times theorem prover too weak. 4130 trivial. 0 not checked. [2021-10-28 09:21:58,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590812336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:58,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:21:58,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-28 09:21:58,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626474658] [2021-10-28 09:21:58,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:21:58,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:21:58,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:21:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:21:58,014 INFO L87 Difference]: Start difference. First operand 618 states and 629 transitions. Second operand has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 18 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:21:58,194 INFO L93 Difference]: Finished difference Result 756 states and 771 transitions. [2021-10-28 09:21:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:21:58,195 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 18 states have internal predecessors, (158), 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 481 [2021-10-28 09:21:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:21:58,199 INFO L225 Difference]: With dead ends: 756 [2021-10-28 09:21:58,199 INFO L226 Difference]: Without dead ends: 686 [2021-10-28 09:21:58,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:21:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-10-28 09:21:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2021-10-28 09:21:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 1.018978102189781) internal successors, (698), 685 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 698 transitions. [2021-10-28 09:21:58,251 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 698 transitions. Word has length 481 [2021-10-28 09:21:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:21:58,252 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 698 transitions. [2021-10-28 09:21:58,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 18 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:21:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 698 transitions. [2021-10-28 09:21:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-10-28 09:21:58,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:21:58,259 INFO L513 BasicCegarLoop]: trace histogram [160, 160, 160, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:21:58,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:21:58,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:58,460 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:21:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:21:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2034417091, now seen corresponding path program 7 times [2021-10-28 09:21:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:21:58,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006916572] [2021-10-28 09:21:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:21:58,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:21:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:21:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 39664 backedges. 14 proven. 34930 refuted. 0 times theorem prover too weak. 4720 trivial. 0 not checked. [2021-10-28 09:21:58,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:21:58,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006916572] [2021-10-28 09:21:58,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006916572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:21:58,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509841903] [2021-10-28 09:21:58,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:21:58,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:21:58,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:21:58,797 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:21:58,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 09:22:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:01,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:22:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 39664 backedges. 14 proven. 34930 refuted. 0 times theorem prover too weak. 4720 trivial. 0 not checked. [2021-10-28 09:22:04,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509841903] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:04,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:22:04,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-28 09:22:04,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637854804] [2021-10-28 09:22:04,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:22:04,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:22:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:22:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:22:04,845 INFO L87 Difference]: Start difference. First operand 686 states and 698 transitions. Second operand has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 20 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:05,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:05,040 INFO L93 Difference]: Finished difference Result 824 states and 840 transitions. [2021-10-28 09:22:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:22:05,041 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 20 states have internal predecessors, (180), 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 549 [2021-10-28 09:22:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:05,046 INFO L225 Difference]: With dead ends: 824 [2021-10-28 09:22:05,046 INFO L226 Difference]: Without dead ends: 754 [2021-10-28 09:22:05,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:22:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-10-28 09:22:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-10-28 09:22:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.0185922974767596) internal successors, (767), 753 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 767 transitions. [2021-10-28 09:22:05,092 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 767 transitions. Word has length 549 [2021-10-28 09:22:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:05,092 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 767 transitions. [2021-10-28 09:22:05,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 20 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 767 transitions. [2021-10-28 09:22:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-10-28 09:22:05,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:05,097 INFO L513 BasicCegarLoop]: trace histogram [180, 180, 180, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:05,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-28 09:22:05,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-28 09:22:05,298 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash -415039993, now seen corresponding path program 8 times [2021-10-28 09:22:05,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:22:05,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893792724] [2021-10-28 09:22:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:05,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:22:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 50238 backedges. 16 proven. 44912 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2021-10-28 09:22:05,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:22:05,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893792724] [2021-10-28 09:22:05,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893792724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:05,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586586701] [2021-10-28 09:22:05,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:22:05,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:05,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:22:05,691 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:22:05,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 09:22:08,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:22:08,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:22:08,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:22:08,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 50238 backedges. 16 proven. 44912 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2021-10-28 09:22:12,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586586701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:12,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:22:12,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-28 09:22:12,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870325749] [2021-10-28 09:22:12,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:22:12,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:22:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:22:12,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:22:12,836 INFO L87 Difference]: Start difference. First operand 754 states and 767 transitions. Second operand has 23 states, 23 states have (on average 8.782608695652174) internal successors, (202), 22 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:12,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:12,997 INFO L93 Difference]: Finished difference Result 892 states and 909 transitions. [2021-10-28 09:22:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:22:12,998 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.782608695652174) internal successors, (202), 22 states have internal predecessors, (202), 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 617 [2021-10-28 09:22:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:13,001 INFO L225 Difference]: With dead ends: 892 [2021-10-28 09:22:13,001 INFO L226 Difference]: Without dead ends: 822 [2021-10-28 09:22:13,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:22:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-10-28 09:22:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2021-10-28 09:22:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.0182704019488429) internal successors, (836), 821 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 836 transitions. [2021-10-28 09:22:13,048 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 836 transitions. Word has length 617 [2021-10-28 09:22:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:13,049 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 836 transitions. [2021-10-28 09:22:13,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.782608695652174) internal successors, (202), 22 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 836 transitions. [2021-10-28 09:22:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2021-10-28 09:22:13,052 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:13,053 INFO L513 BasicCegarLoop]: trace histogram [200, 200, 200, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:13,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-28 09:22:13,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-28 09:22:13,254 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash -758293429, now seen corresponding path program 9 times [2021-10-28 09:22:13,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:22:13,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015243007] [2021-10-28 09:22:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:13,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:22:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 62060 backedges. 18 proven. 56142 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2021-10-28 09:22:13,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:22:13,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015243007] [2021-10-28 09:22:13,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015243007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:13,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763343762] [2021-10-28 09:22:13,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:22:13,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:22:13,705 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:22:13,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-28 09:22:17,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2021-10-28 09:22:17,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:22:17,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:22:17,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 62060 backedges. 18 proven. 56142 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2021-10-28 09:22:22,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763343762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:22,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:22:22,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-10-28 09:22:22,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406158325] [2021-10-28 09:22:22,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:22:22,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:22:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:22:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=355, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:22:22,297 INFO L87 Difference]: Start difference. First operand 822 states and 836 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 24 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:22,453 INFO L93 Difference]: Finished difference Result 960 states and 978 transitions. [2021-10-28 09:22:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:22:22,453 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 24 states have internal predecessors, (224), 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 685 [2021-10-28 09:22:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:22,456 INFO L225 Difference]: With dead ends: 960 [2021-10-28 09:22:22,456 INFO L226 Difference]: Without dead ends: 890 [2021-10-28 09:22:22,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=355, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:22:22,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-10-28 09:22:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2021-10-28 09:22:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.0179977502812148) internal successors, (905), 889 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 905 transitions. [2021-10-28 09:22:22,535 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 905 transitions. Word has length 685 [2021-10-28 09:22:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:22,535 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 905 transitions. [2021-10-28 09:22:22,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 24 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 905 transitions. [2021-10-28 09:22:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2021-10-28 09:22:22,540 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:22,540 INFO L513 BasicCegarLoop]: trace histogram [220, 220, 220, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:22,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:22:22,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:22,744 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1515005809, now seen corresponding path program 10 times [2021-10-28 09:22:22,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:22:22,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795064467] [2021-10-28 09:22:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:22,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:22:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 75130 backedges. 20 proven. 68620 refuted. 0 times theorem prover too weak. 6490 trivial. 0 not checked. [2021-10-28 09:22:23,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:22:23,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795064467] [2021-10-28 09:22:23,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795064467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:23,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911841692] [2021-10-28 09:22:23,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:22:23,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:23,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:22:23,188 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:22:23,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 09:22:27,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:22:27,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:22:27,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-28 09:22:27,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 75130 backedges. 552 proven. 68678 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2021-10-28 09:22:33,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911841692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:33,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:22:33,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 35] total 48 [2021-10-28 09:22:33,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123191474] [2021-10-28 09:22:33,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-28 09:22:33,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:22:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-28 09:22:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=1717, Unknown=0, NotChecked=0, Total=2256 [2021-10-28 09:22:33,222 INFO L87 Difference]: Start difference. First operand 890 states and 905 transitions. Second operand has 48 states, 48 states have (on average 6.375) internal successors, (306), 48 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:33,767 INFO L93 Difference]: Finished difference Result 1029 states and 1048 transitions. [2021-10-28 09:22:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-28 09:22:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.375) internal successors, (306), 48 states have internal predecessors, (306), 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 753 [2021-10-28 09:22:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:33,769 INFO L225 Difference]: With dead ends: 1029 [2021-10-28 09:22:33,770 INFO L226 Difference]: Without dead ends: 959 [2021-10-28 09:22:33,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1499, Invalid=3057, Unknown=0, NotChecked=0, Total=4556 [2021-10-28 09:22:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-10-28 09:22:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 958. [2021-10-28 09:22:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.0177638453500522) internal successors, (974), 957 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 974 transitions. [2021-10-28 09:22:33,818 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 974 transitions. Word has length 753 [2021-10-28 09:22:33,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:33,819 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 974 transitions. [2021-10-28 09:22:33,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.375) internal successors, (306), 48 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 974 transitions. [2021-10-28 09:22:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2021-10-28 09:22:33,826 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:33,827 INFO L513 BasicCegarLoop]: trace histogram [240, 240, 240, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:33,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:22:34,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:34,040 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:34,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1900311251, now seen corresponding path program 11 times [2021-10-28 09:22:34,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:22:34,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432437082] [2021-10-28 09:22:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:34,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:22:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 89448 backedges. 22 proven. 82346 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2021-10-28 09:22:34,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:22:34,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432437082] [2021-10-28 09:22:34,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432437082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:34,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229576040] [2021-10-28 09:22:34,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:22:34,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:34,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:22:34,860 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:22:34,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-28 09:22:40,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 110 check-sat command(s) [2021-10-28 09:22:40,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:22:40,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 09:22:40,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 89448 backedges. 592 proven. 82366 refuted. 0 times theorem prover too weak. 6490 trivial. 0 not checked. [2021-10-28 09:22:45,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229576040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:45,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:22:45,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 37] total 51 [2021-10-28 09:22:45,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109330909] [2021-10-28 09:22:45,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-28 09:22:45,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:22:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-28 09:22:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=1944, Unknown=0, NotChecked=0, Total=2550 [2021-10-28 09:22:45,368 INFO L87 Difference]: Start difference. First operand 958 states and 974 transitions. Second operand has 51 states, 51 states have (on average 6.431372549019608) internal successors, (328), 51 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:46,302 INFO L93 Difference]: Finished difference Result 1097 states and 1117 transitions. [2021-10-28 09:22:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-28 09:22:46,303 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.431372549019608) internal successors, (328), 51 states have internal predecessors, (328), 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 821 [2021-10-28 09:22:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:46,305 INFO L225 Difference]: With dead ends: 1097 [2021-10-28 09:22:46,305 INFO L226 Difference]: Without dead ends: 1027 [2021-10-28 09:22:46,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2887, Invalid=5485, Unknown=0, NotChecked=0, Total=8372 [2021-10-28 09:22:46,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-10-28 09:22:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1026. [2021-10-28 09:22:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1025 states have (on average 1.0175609756097561) internal successors, (1043), 1025 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1043 transitions. [2021-10-28 09:22:46,380 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1043 transitions. Word has length 821 [2021-10-28 09:22:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:46,381 INFO L470 AbstractCegarLoop]: Abstraction has 1026 states and 1043 transitions. [2021-10-28 09:22:46,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.431372549019608) internal successors, (328), 51 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1043 transitions. [2021-10-28 09:22:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2021-10-28 09:22:46,391 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:46,392 INFO L513 BasicCegarLoop]: trace histogram [260, 260, 260, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:46,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:22:46,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:46,618 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash 777202455, now seen corresponding path program 12 times [2021-10-28 09:22:46,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:22:46,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881909819] [2021-10-28 09:22:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:46,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:22:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 105014 backedges. 24 proven. 97320 refuted. 0 times theorem prover too weak. 7670 trivial. 0 not checked. [2021-10-28 09:22:47,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:22:47,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881909819] [2021-10-28 09:22:47,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881909819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:47,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947778521] [2021-10-28 09:22:47,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:22:47,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:47,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:22:47,109 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:22:47,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-28 09:22:52,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 131 check-sat command(s) [2021-10-28 09:22:52,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:22:52,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:22:52,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 105014 backedges. 24 proven. 97320 refuted. 0 times theorem prover too weak. 7670 trivial. 0 not checked. [2021-10-28 09:22:57,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947778521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:57,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:22:57,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2021-10-28 09:22:57,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32591863] [2021-10-28 09:22:57,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-28 09:22:57,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:22:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-28 09:22:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=556, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:22:57,450 INFO L87 Difference]: Start difference. First operand 1026 states and 1043 transitions. Second operand has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:57,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:57,630 INFO L93 Difference]: Finished difference Result 1164 states and 1185 transitions. [2021-10-28 09:22:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:22:57,631 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 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 889 [2021-10-28 09:22:57,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:57,634 INFO L225 Difference]: With dead ends: 1164 [2021-10-28 09:22:57,634 INFO L226 Difference]: Without dead ends: 1094 [2021-10-28 09:22:57,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=374, Invalid=556, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:22:57,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-10-28 09:22:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1094. [2021-10-28 09:22:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 1.0173833485818846) internal successors, (1112), 1093 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1112 transitions. [2021-10-28 09:22:57,705 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1112 transitions. Word has length 889 [2021-10-28 09:22:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:57,706 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1112 transitions. [2021-10-28 09:22:57,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1112 transitions. [2021-10-28 09:22:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2021-10-28 09:22:57,712 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:57,712 INFO L513 BasicCegarLoop]: trace histogram [280, 280, 280, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:57,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-28 09:22:57,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-28 09:22:57,913 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash -47185573, now seen corresponding path program 13 times [2021-10-28 09:22:57,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:22:57,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955173116] [2021-10-28 09:22:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:57,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:22:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 121828 backedges. 26 proven. 113542 refuted. 0 times theorem prover too weak. 8260 trivial. 0 not checked. [2021-10-28 09:22:58,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:22:58,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955173116] [2021-10-28 09:22:58,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955173116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:22:58,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064474511] [2021-10-28 09:22:58,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:22:58,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:22:58,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:22:58,604 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:22:58,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-28 09:23:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:03,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:23:03,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 121828 backedges. 26 proven. 113542 refuted. 0 times theorem prover too weak. 8260 trivial. 0 not checked. [2021-10-28 09:23:08,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064474511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:08,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:23:08,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-10-28 09:23:08,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487033839] [2021-10-28 09:23:08,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-28 09:23:08,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:08,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-28 09:23:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:23:08,984 INFO L87 Difference]: Start difference. First operand 1094 states and 1112 transitions. Second operand has 33 states, 33 states have (on average 9.454545454545455) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:09,221 INFO L93 Difference]: Finished difference Result 1232 states and 1254 transitions. [2021-10-28 09:23:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:23:09,221 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.454545454545455) internal successors, (312), 32 states have internal predecessors, (312), 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 957 [2021-10-28 09:23:09,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:09,224 INFO L225 Difference]: With dead ends: 1232 [2021-10-28 09:23:09,224 INFO L226 Difference]: Without dead ends: 1162 [2021-10-28 09:23:09,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:23:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-10-28 09:23:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2021-10-28 09:23:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.0172265288544358) internal successors, (1181), 1161 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1181 transitions. [2021-10-28 09:23:09,279 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1181 transitions. Word has length 957 [2021-10-28 09:23:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:09,280 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1181 transitions. [2021-10-28 09:23:09,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.454545454545455) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1181 transitions. [2021-10-28 09:23:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2021-10-28 09:23:09,289 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:09,289 INFO L513 BasicCegarLoop]: trace histogram [300, 300, 300, 15, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:09,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-28 09:23:09,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-28 09:23:09,490 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:09,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1705768351, now seen corresponding path program 14 times [2021-10-28 09:23:09,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:09,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881810905] [2021-10-28 09:23:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:09,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 139890 backedges. 28 proven. 131012 refuted. 0 times theorem prover too weak. 8850 trivial. 0 not checked. [2021-10-28 09:23:10,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:10,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881810905] [2021-10-28 09:23:10,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881810905] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:10,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601123828] [2021-10-28 09:23:10,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:23:10,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:10,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:10,224 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:10,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-28 09:23:15,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:23:15,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:23:15,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:23:15,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 139890 backedges. 28 proven. 131012 refuted. 0 times theorem prover too weak. 8850 trivial. 0 not checked. [2021-10-28 09:23:22,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601123828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:22,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:23:22,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-28 09:23:22,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940498787] [2021-10-28 09:23:22,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-28 09:23:22,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-28 09:23:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 09:23:22,115 INFO L87 Difference]: Start difference. First operand 1162 states and 1181 transitions. Second operand has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 34 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:22,317 INFO L93 Difference]: Finished difference Result 1300 states and 1323 transitions. [2021-10-28 09:23:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:23:22,317 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 34 states have internal predecessors, (334), 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 1025 [2021-10-28 09:23:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:22,319 INFO L225 Difference]: With dead ends: 1300 [2021-10-28 09:23:22,319 INFO L226 Difference]: Without dead ends: 1230 [2021-10-28 09:23:22,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 09:23:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-10-28 09:23:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2021-10-28 09:23:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 1.017087062652563) internal successors, (1250), 1229 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1250 transitions. [2021-10-28 09:23:22,376 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1250 transitions. Word has length 1025 [2021-10-28 09:23:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:22,377 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1250 transitions. [2021-10-28 09:23:22,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 34 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1250 transitions. [2021-10-28 09:23:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2021-10-28 09:23:22,384 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:22,384 INFO L513 BasicCegarLoop]: trace histogram [320, 320, 320, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:22,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:22,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-28 09:23:22,585 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1760032797, now seen corresponding path program 15 times [2021-10-28 09:23:22,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:22,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066120653] [2021-10-28 09:23:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:22,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 159200 backedges. 30 proven. 149730 refuted. 0 times theorem prover too weak. 9440 trivial. 0 not checked. [2021-10-28 09:23:23,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:23,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066120653] [2021-10-28 09:23:23,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066120653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:23,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528307137] [2021-10-28 09:23:23,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:23:23,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:23,416 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:23,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-28 09:23:30,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 134 check-sat command(s) [2021-10-28 09:23:30,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:23:30,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:23:30,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 159200 backedges. 30 proven. 149730 refuted. 0 times theorem prover too weak. 9440 trivial. 0 not checked. [2021-10-28 09:23:36,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528307137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:36,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:23:36,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2021-10-28 09:23:36,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486090460] [2021-10-28 09:23:36,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-28 09:23:36,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-28 09:23:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=802, Unknown=0, NotChecked=0, Total=1332 [2021-10-28 09:23:36,886 INFO L87 Difference]: Start difference. First operand 1230 states and 1250 transitions. Second operand has 37 states, 37 states have (on average 9.621621621621621) internal successors, (356), 36 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:37,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:37,095 INFO L93 Difference]: Finished difference Result 1368 states and 1392 transitions. [2021-10-28 09:23:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:23:37,095 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 9.621621621621621) internal successors, (356), 36 states have internal predecessors, (356), 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 1093 [2021-10-28 09:23:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:37,099 INFO L225 Difference]: With dead ends: 1368 [2021-10-28 09:23:37,099 INFO L226 Difference]: Without dead ends: 1298 [2021-10-28 09:23:37,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=530, Invalid=802, Unknown=0, NotChecked=0, Total=1332 [2021-10-28 09:23:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-10-28 09:23:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2021-10-28 09:23:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 1.0169622205088666) internal successors, (1319), 1297 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1319 transitions. [2021-10-28 09:23:37,167 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1319 transitions. Word has length 1093 [2021-10-28 09:23:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:37,168 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1319 transitions. [2021-10-28 09:23:37,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.621621621621621) internal successors, (356), 36 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1319 transitions. [2021-10-28 09:23:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2021-10-28 09:23:37,182 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:37,182 INFO L513 BasicCegarLoop]: trace histogram [340, 340, 340, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:37,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-28 09:23:37,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:37,383 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:37,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1471858649, now seen corresponding path program 16 times [2021-10-28 09:23:37,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:37,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813452391] [2021-10-28 09:23:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:37,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 179758 backedges. 32 proven. 169696 refuted. 0 times theorem prover too weak. 10030 trivial. 0 not checked. [2021-10-28 09:23:38,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:38,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813452391] [2021-10-28 09:23:38,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813452391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:38,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320213310] [2021-10-28 09:23:38,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:23:38,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:38,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:38,064 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:38,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 09:23:44,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:23:44,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:23:44,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-28 09:23:44,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 179758 backedges. 564 proven. 169754 refuted. 0 times theorem prover too weak. 9440 trivial. 0 not checked. [2021-10-28 09:23:52,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320213310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:52,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:23:52,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 41] total 60 [2021-10-28 09:23:52,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698658288] [2021-10-28 09:23:52,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-28 09:23:52,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:52,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-28 09:23:52,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2698, Unknown=0, NotChecked=0, Total=3540 [2021-10-28 09:23:52,579 INFO L87 Difference]: Start difference. First operand 1298 states and 1319 transitions. Second operand has 60 states, 60 states have (on average 7.3) internal successors, (438), 60 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:53,145 INFO L93 Difference]: Finished difference Result 1437 states and 1462 transitions. [2021-10-28 09:23:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-28 09:23:53,145 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 7.3) internal successors, (438), 60 states have internal predecessors, (438), 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 1161 [2021-10-28 09:23:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:53,147 INFO L225 Difference]: With dead ends: 1437 [2021-10-28 09:23:53,147 INFO L226 Difference]: Without dead ends: 1367 [2021-10-28 09:23:53,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1122 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2042, Invalid=4278, Unknown=0, NotChecked=0, Total=6320 [2021-10-28 09:23:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-10-28 09:23:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1366. [2021-10-28 09:23:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 1.0168498168498168) internal successors, (1388), 1365 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1388 transitions. [2021-10-28 09:23:53,211 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1388 transitions. Word has length 1161 [2021-10-28 09:23:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:53,211 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 1388 transitions. [2021-10-28 09:23:53,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 7.3) internal successors, (438), 60 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1388 transitions. [2021-10-28 09:23:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2021-10-28 09:23:53,220 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:53,220 INFO L513 BasicCegarLoop]: trace histogram [360, 360, 360, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:53,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:53,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:53,421 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash -679180693, now seen corresponding path program 17 times [2021-10-28 09:23:53,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:53,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031433361] [2021-10-28 09:23:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:53,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 201564 backedges. 34 proven. 190910 refuted. 0 times theorem prover too weak. 10620 trivial. 0 not checked. [2021-10-28 09:23:54,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:54,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031433361] [2021-10-28 09:23:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031433361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:54,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904917328] [2021-10-28 09:23:54,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:23:54,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:54,545 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:54,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-28 09:24:03,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 156 check-sat command(s) [2021-10-28 09:24:03,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:24:03,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 09:24:03,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:24:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 201564 backedges. 604 proven. 190930 refuted. 0 times theorem prover too weak. 10030 trivial. 0 not checked. [2021-10-28 09:24:10,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904917328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:24:10,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:24:10,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 43] total 63 [2021-10-28 09:24:10,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416787255] [2021-10-28 09:24:10,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-28 09:24:10,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-28 09:24:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=891, Invalid=3015, Unknown=0, NotChecked=0, Total=3906 [2021-10-28 09:24:10,726 INFO L87 Difference]: Start difference. First operand 1366 states and 1388 transitions. Second operand has 63 states, 63 states have (on average 7.301587301587301) internal successors, (460), 63 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:12,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:12,124 INFO L93 Difference]: Finished difference Result 1505 states and 1531 transitions. [2021-10-28 09:24:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-28 09:24:12,125 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 7.301587301587301) internal successors, (460), 63 states have internal predecessors, (460), 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 1229 [2021-10-28 09:24:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:12,127 INFO L225 Difference]: With dead ends: 1505 [2021-10-28 09:24:12,127 INFO L226 Difference]: Without dead ends: 1435 [2021-10-28 09:24:12,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5366, Invalid=10134, Unknown=0, NotChecked=0, Total=15500 [2021-10-28 09:24:12,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2021-10-28 09:24:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1434. [2021-10-28 09:24:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 1.0167480809490579) internal successors, (1457), 1433 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1457 transitions. [2021-10-28 09:24:12,187 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1457 transitions. Word has length 1229 [2021-10-28 09:24:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:12,188 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 1457 transitions. [2021-10-28 09:24:12,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 7.301587301587301) internal successors, (460), 63 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1457 transitions. [2021-10-28 09:24:12,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2021-10-28 09:24:12,196 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:12,197 INFO L513 BasicCegarLoop]: trace histogram [380, 380, 380, 19, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:12,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:24:12,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-10-28 09:24:12,397 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash -895028561, now seen corresponding path program 18 times [2021-10-28 09:24:12,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:12,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376806643] [2021-10-28 09:24:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:12,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 224618 backedges. 36 proven. 213372 refuted. 0 times theorem prover too weak. 11210 trivial. 0 not checked. [2021-10-28 09:24:13,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:13,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376806643] [2021-10-28 09:24:13,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376806643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:24:13,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535745966] [2021-10-28 09:24:13,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:24:13,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:24:13,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:24:13,237 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:24:13,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-28 09:24:22,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2021-10-28 09:24:22,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:24:22,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:24:22,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:24:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 224618 backedges. 36 proven. 213372 refuted. 0 times theorem prover too weak. 11210 trivial. 0 not checked. [2021-10-28 09:24:29,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535745966] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:24:29,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:24:29,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2021-10-28 09:24:29,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577655382] [2021-10-28 09:24:29,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-28 09:24:29,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-28 09:24:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=1093, Unknown=0, NotChecked=0, Total=1806 [2021-10-28 09:24:29,506 INFO L87 Difference]: Start difference. First operand 1434 states and 1457 transitions. Second operand has 43 states, 43 states have (on average 9.813953488372093) internal successors, (422), 42 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:29,723 INFO L93 Difference]: Finished difference Result 1572 states and 1599 transitions. [2021-10-28 09:24:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 09:24:29,724 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 9.813953488372093) internal successors, (422), 42 states have internal predecessors, (422), 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 1297 [2021-10-28 09:24:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:29,726 INFO L225 Difference]: With dead ends: 1572 [2021-10-28 09:24:29,726 INFO L226 Difference]: Without dead ends: 1502 [2021-10-28 09:24:29,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=713, Invalid=1093, Unknown=0, NotChecked=0, Total=1806 [2021-10-28 09:24:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-10-28 09:24:29,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1502. [2021-10-28 09:24:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 1.016655562958028) internal successors, (1526), 1501 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1526 transitions. [2021-10-28 09:24:29,788 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1526 transitions. Word has length 1297 [2021-10-28 09:24:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:29,788 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 1526 transitions. [2021-10-28 09:24:29,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 9.813953488372093) internal successors, (422), 42 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1526 transitions. [2021-10-28 09:24:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2021-10-28 09:24:29,797 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:29,798 INFO L513 BasicCegarLoop]: trace histogram [400, 400, 400, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:29,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-28 09:24:29,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:24:29,998 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash -822248205, now seen corresponding path program 19 times [2021-10-28 09:24:29,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:29,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497778325] [2021-10-28 09:24:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:29,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:24:30,605 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:24:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:24:31,222 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:24:31,223 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:24:31,228 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:24:31,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-28 09:24:31,235 INFO L731 BasicCegarLoop]: Path program histogram: [19, 7, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:31,240 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:24:31,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:24:31 BoogieIcfgContainer [2021-10-28 09:24:31,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:24:31,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:24:31,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:24:31,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:24:31,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:20:08" (3/4) ... [2021-10-28 09:24:31,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:24:32,146 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:24:32,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:24:32,148 INFO L168 Benchmark]: Toolchain (without parser) took 264572.73 ms. Allocated memory was 83.9 MB in the beginning and 2.3 GB in the end (delta: 2.2 GB). Free memory was 45.1 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-10-28 09:24:32,148 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:24:32,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.60 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 44.9 MB in the beginning and 80.8 MB in the end (delta: -35.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:32,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.02 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 79.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:32,149 INFO L168 Benchmark]: Boogie Preprocessor took 27.30 ms. Allocated memory is still 104.9 MB. Free memory was 79.3 MB in the beginning and 78.3 MB in the end (delta: 948.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:24:32,150 INFO L168 Benchmark]: RCFGBuilder took 369.86 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 68.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:32,150 INFO L168 Benchmark]: TraceAbstraction took 263348.40 ms. Allocated memory was 104.9 MB in the beginning and 2.3 GB in the end (delta: 2.2 GB). Free memory was 67.8 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.0 GB. Max. memory is 16.1 GB. [2021-10-28 09:24:32,150 INFO L168 Benchmark]: Witness Printer took 462.36 ms. Allocated memory is still 2.3 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Peak memory consumption was 86.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:32,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.60 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 44.9 MB in the beginning and 80.8 MB in the end (delta: -35.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.02 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 79.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.30 ms. Allocated memory is still 104.9 MB. Free memory was 79.3 MB in the beginning and 78.3 MB in the end (delta: 948.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 369.86 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 68.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 263348.40 ms. Allocated memory was 104.9 MB in the beginning and 2.3 GB in the end (delta: 2.2 GB). Free memory was 67.8 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.0 GB. Max. memory is 16.1 GB. * Witness Printer took 462.36 ms. Allocated memory is still 2.3 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Peak memory consumption was 86.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L9] int last ; [L18] int SIZE = 20; VAL [last=0, SIZE=20] [L20] last = __VERIFIER_nondet_int() [L6] COND FALSE !(!cond) VAL [last=22, SIZE=20] [L22] int a=0,b=0,c=0,st=0,d=0; VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND TRUE d == SIZE [L38] a = 0 [L39] b = 1 VAL [last=22, SIZE=20] [L11] COND TRUE !(cond) VAL [last=22, SIZE=20] [L12] reach_error() VAL [last=22, SIZE=20] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 262.8s, OverallIterations: 55, TraceHistogramMax: 400, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.1s, AutomataDifference: 37.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 756 SDtfs, 11102 SDslu, 3334 SDs, 0 SdLazy, 15137 SolverSat, 1694 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16863 GetRequests, 14566 SyntacticMatches, 2 SemanticMatches, 2295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60073 ImplicationChecksByTransitivity, 37.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1714occurred in iteration=34, InterpolantAutomatonStates: 1514, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 54 MinimizatonAttempts, 6839 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 10.3s SatisfiabilityAnalysisTime, 115.8s InterpolantComputationTime, 31971 NumberOfCodeBlocks, 30611 NumberOfCodeBlocksAsserted, 1089 NumberOfCheckSat, 30506 ConstructedInterpolants, 0 QuantifiedInterpolants, 178480 SizeOfPredicates, 133 NumberOfNonLiveVariables, 23583 ConjunctsInSsa, 800 ConjunctsInUnsatCore, 100 InterpolantComputations, 12 PerfectInterpolantSequences, 253176/3128819 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:24:32,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a45f7c9-f716-4d2e-a6b4-7ac2f31b0db2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...