./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_reverse_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro --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 cce6de3c48d80c64796d0d47269c605ab237c0f177720038579dfa7efd061db0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:29:26,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:29:26,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:29:26,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:29:26,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:29:26,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:29:26,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:29:26,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:29:26,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:29:26,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:29:26,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:29:26,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:29:26,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:29:26,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:29:26,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:29:26,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:29:26,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:29:26,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:29:26,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:29:26,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:29:26,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:29:26,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:29:26,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:29:26,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:29:26,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:29:26,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:29:26,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:29:26,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:29:26,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:29:26,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:29:26,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:29:26,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:29:26,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:29:26,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:29:26,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:29:26,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:29:26,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:29:26,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:29:26,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:29:26,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:29:26,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:29:26,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:29:26,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:29:26,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:29:26,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:29:26,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:29:26,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:29:26,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:29:26,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:29:26,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:29:26,177 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:29:26,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:29:26,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:29:26,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:29:26,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:29:26,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:29:26,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:29:26,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:29:26,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:29:26,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:29:26,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:29:26,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:29:26,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:29:26,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:29:26,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:29:26,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:29:26,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:29:26,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:29:26,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:29:26,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:29:26,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:29:26,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:29:26,183 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:29:26,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:29:26,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:29:26,184 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_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cce6de3c48d80c64796d0d47269c605ab237c0f177720038579dfa7efd061db0 [2022-11-18 18:29:26,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:29:26,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:29:26,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:29:26,584 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:29:26,585 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:29:26,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-examples/standard_reverse_ground.i [2022-11-18 18:29:26,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/data/d45fe569c/9a7b42c43d3f493f839a51b3a7a8f225/FLAG460afc4ba [2022-11-18 18:29:27,165 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:29:27,166 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/sv-benchmarks/c/array-examples/standard_reverse_ground.i [2022-11-18 18:29:27,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/data/d45fe569c/9a7b42c43d3f493f839a51b3a7a8f225/FLAG460afc4ba [2022-11-18 18:29:27,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/data/d45fe569c/9a7b42c43d3f493f839a51b3a7a8f225 [2022-11-18 18:29:27,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:29:27,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:29:27,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:29:27,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:29:27,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:29:27,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:27,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27fa7656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27, skipping insertion in model container [2022-11-18 18:29:27,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:27,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:29:27,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:29:27,892 WARN L234 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_7e001572-8f90-4b25-b90e-5242e26dac1e/sv-benchmarks/c/array-examples/standard_reverse_ground.i[816,829] [2022-11-18 18:29:27,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:29:27,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:29:27,936 WARN L234 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_7e001572-8f90-4b25-b90e-5242e26dac1e/sv-benchmarks/c/array-examples/standard_reverse_ground.i[816,829] [2022-11-18 18:29:27,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:29:27,961 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:29:27,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27 WrapperNode [2022-11-18 18:29:27,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:29:27,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:29:27,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:29:27,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:29:27,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:27,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,014 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-11-18 18:29:28,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:29:28,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:29:28,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:29:28,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:29:28,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:29:28,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:29:28,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:29:28,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:29:28,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (1/1) ... [2022-11-18 18:29:28,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:29:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:28,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:29:28,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:29:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:29:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:29:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:29:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:29:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:29:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:29:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:29:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:29:28,242 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:29:28,244 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:29:28,404 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:29:28,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:29:28,412 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 18:29:28,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:29:28 BoogieIcfgContainer [2022-11-18 18:29:28,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:29:28,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:29:28,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:29:28,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:29:28,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:29:27" (1/3) ... [2022-11-18 18:29:28,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a29883e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:29:28, skipping insertion in model container [2022-11-18 18:29:28,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:27" (2/3) ... [2022-11-18 18:29:28,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a29883e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:29:28, skipping insertion in model container [2022-11-18 18:29:28,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:29:28" (3/3) ... [2022-11-18 18:29:28,426 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2022-11-18 18:29:28,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:29:28,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:29:28,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:29:28,523 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29856603, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:29:28,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:29:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) 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) [2022-11-18 18:29:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:29:28,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:28,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:28,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2022-11-18 18:29:28,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:28,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693124785] [2022-11-18 18:29:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:28,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:28,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693124785] [2022-11-18 18:29:28,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693124785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:28,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:28,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891251329] [2022-11-18 18:29:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:28,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:29:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:29:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:28,945 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:29,030 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2022-11-18 18:29:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:29:29,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:29:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:29,057 INFO L225 Difference]: With dead ends: 36 [2022-11-18 18:29:29,057 INFO L226 Difference]: Without dead ends: 18 [2022-11-18 18:29:29,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:29,073 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:29,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:29:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-18 18:29:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-11-18 18:29:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2022-11-18 18:29:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-18 18:29:29,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-11-18 18:29:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:29,151 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-18 18:29:29,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-18 18:29:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:29:29,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:29,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:29,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:29:29,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:29,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:29,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054225, now seen corresponding path program 1 times [2022-11-18 18:29:29,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:29,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955264634] [2022-11-18 18:29:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:29,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:29,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955264634] [2022-11-18 18:29:29,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955264634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:29,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076663755] [2022-11-18 18:29:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:29,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:29,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:29,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:29,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:29:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:29,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:29:29,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:29,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:29,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076663755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:29,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:29,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-18 18:29:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524486514] [2022-11-18 18:29:29,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:29,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:29:29,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:29,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:29:29,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:29:29,653 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2022-11-18 18:29:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:29,730 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-11-18 18:29:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:29:29,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 13 [2022-11-18 18:29:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:29,733 INFO L225 Difference]: With dead ends: 39 [2022-11-18 18:29:29,733 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 18:29:29,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:29:29,735 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:29,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:29:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 18:29:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-18 18:29:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 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) [2022-11-18 18:29:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-11-18 18:29:29,753 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2022-11-18 18:29:29,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:29,753 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-11-18 18:29:29,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2022-11-18 18:29:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-11-18 18:29:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 18:29:29,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:29,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:29,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:29,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:29,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash -318070331, now seen corresponding path program 2 times [2022-11-18 18:29:29,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:29,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688042334] [2022-11-18 18:29:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:29,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:29:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:30,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688042334] [2022-11-18 18:29:30,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688042334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:30,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517802753] [2022-11-18 18:29:30,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:30,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:30,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:30,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:30,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:29:30,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:29:30,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:30,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:29:30,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:29:30,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:29:30,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517802753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:30,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:30,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 18:29:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199437931] [2022-11-18 18:29:30,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:29:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:29:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:29:30,566 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2022-11-18 18:29:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:30,725 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2022-11-18 18:29:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:29:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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 25 [2022-11-18 18:29:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:30,728 INFO L225 Difference]: With dead ends: 69 [2022-11-18 18:29:30,728 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 18:29:30,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:29:30,730 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:30,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 44 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:29:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 18:29:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 18:29:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2022-11-18 18:29:30,742 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 25 [2022-11-18 18:29:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:30,743 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2022-11-18 18:29:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2022-11-18 18:29:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2022-11-18 18:29:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 18:29:30,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:30,746 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:30,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:29:30,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:30,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:30,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash 407457837, now seen corresponding path program 3 times [2022-11-18 18:29:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:30,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715245836] [2022-11-18 18:29:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-18 18:29:31,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715245836] [2022-11-18 18:29:31,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715245836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205658846] [2022-11-18 18:29:31,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:29:31,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:31,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:31,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:31,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:29:31,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 18:29:31,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:31,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:29:31,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:31,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:29:32,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-18 18:29:32,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:29:32,454 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:29:32,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 23 [2022-11-18 18:29:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-18 18:29:32,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:32,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205658846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:32,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:29:32,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-18 18:29:32,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018269553] [2022-11-18 18:29:32,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:32,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:29:32,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:29:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:29:32,490 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:32,579 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2022-11-18 18:29:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:29:32,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 49 [2022-11-18 18:29:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:32,582 INFO L225 Difference]: With dead ends: 59 [2022-11-18 18:29:32,582 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 18:29:32,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:29:32,584 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:32,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 37 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-11-18 18:29:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 18:29:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-18 18:29:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2022-11-18 18:29:32,603 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 49 [2022-11-18 18:29:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:32,603 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2022-11-18 18:29:32,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2022-11-18 18:29:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 18:29:32,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:32,606 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:32,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:32,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670371, now seen corresponding path program 1 times [2022-11-18 18:29:32,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:32,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244596558] [2022-11-18 18:29:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-18 18:29:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:33,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244596558] [2022-11-18 18:29:33,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244596558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:33,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735707543] [2022-11-18 18:29:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:33,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:33,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:33,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:29:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:33,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:29:33,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-18 18:29:33,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-18 18:29:33,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735707543] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:33,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:33,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-18 18:29:33,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283638488] [2022-11-18 18:29:33,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:33,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:29:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:33,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:29:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:29:33,735 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:34,057 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2022-11-18 18:29:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:29:34,058 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 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 53 [2022-11-18 18:29:34,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:34,059 INFO L225 Difference]: With dead ends: 133 [2022-11-18 18:29:34,059 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 18:29:34,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:29:34,061 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 100 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:34,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 36 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:29:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 18:29:34,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-18 18:29:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2022-11-18 18:29:34,101 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 53 [2022-11-18 18:29:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:34,102 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2022-11-18 18:29:34,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2022-11-18 18:29:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 18:29:34,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:34,110 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:34,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:34,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:34,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:34,317 INFO L85 PathProgramCache]: Analyzing trace with hash -109773453, now seen corresponding path program 2 times [2022-11-18 18:29:34,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:34,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896890973] [2022-11-18 18:29:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:34,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-18 18:29:35,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:35,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896890973] [2022-11-18 18:29:35,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896890973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:35,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539009468] [2022-11-18 18:29:35,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:35,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:35,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:35,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:29:35,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:29:35,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:35,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:29:35,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-18 18:29:35,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-18 18:29:36,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539009468] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:36,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:36,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-18 18:29:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873947693] [2022-11-18 18:29:36,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:36,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 18:29:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 18:29:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 18:29:36,926 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:37,683 INFO L93 Difference]: Finished difference Result 253 states and 304 transitions. [2022-11-18 18:29:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 18:29:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 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 101 [2022-11-18 18:29:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:37,685 INFO L225 Difference]: With dead ends: 253 [2022-11-18 18:29:37,685 INFO L226 Difference]: Without dead ends: 198 [2022-11-18 18:29:37,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 18:29:37,687 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 223 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:37,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 36 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:29:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-18 18:29:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-18 18:29:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.015228426395939) internal successors, (200), 197 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2022-11-18 18:29:37,720 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 101 [2022-11-18 18:29:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:37,721 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2022-11-18 18:29:37,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2022-11-18 18:29:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-18 18:29:37,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:37,723 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:37,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:37,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:29:37,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash -645892333, now seen corresponding path program 3 times [2022-11-18 18:29:37,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:37,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181218896] [2022-11-18 18:29:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:37,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2022-11-18 18:29:41,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:41,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181218896] [2022-11-18 18:29:41,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181218896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:41,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594578112] [2022-11-18 18:29:41,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:29:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:41,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:41,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:29:42,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 18:29:42,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:42,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 18:29:42,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:42,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:29:42,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-18 18:29:43,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-11-18 18:29:44,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:29:44,305 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:29:44,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 23 [2022-11-18 18:29:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 178 proven. 4 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-11-18 18:29:44,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:45,111 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:29:45,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 456 [2022-11-18 18:29:45,142 INFO L321 Elim1Store]: treesize reduction 31, result has 11.4 percent of original size [2022-11-18 18:29:45,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1338 treesize of output 1046 [2022-11-18 18:29:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-11-18 18:29:47,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594578112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:47,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:47,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 12, 12] total 69 [2022-11-18 18:29:47,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534250436] [2022-11-18 18:29:47,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:47,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-18 18:29:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-18 18:29:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1463, Invalid=3229, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 18:29:47,255 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 69 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:52,556 INFO L93 Difference]: Finished difference Result 316 states and 323 transitions. [2022-11-18 18:29:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 18:29:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 69 states have internal predecessors, (144), 0 states have call successors, (0), 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 197 [2022-11-18 18:29:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:52,559 INFO L225 Difference]: With dead ends: 316 [2022-11-18 18:29:52,559 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 18:29:52,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2596 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=4342, Invalid=10909, Unknown=1, NotChecked=0, Total=15252 [2022-11-18 18:29:52,567 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 216 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:52,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 103 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 163 Invalid, 0 Unknown, 150 Unchecked, 0.3s Time] [2022-11-18 18:29:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 18:29:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 204. [2022-11-18 18:29:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 203 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 206 transitions. [2022-11-18 18:29:52,622 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 206 transitions. Word has length 197 [2022-11-18 18:29:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:52,623 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 206 transitions. [2022-11-18 18:29:52,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 69 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 206 transitions. [2022-11-18 18:29:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-18 18:29:52,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:52,626 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:52,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:52,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:52,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:29:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash -239660601, now seen corresponding path program 4 times [2022-11-18 18:29:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:52,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021867396] [2022-11-18 18:29:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4333 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 2124 trivial. 0 not checked. [2022-11-18 18:29:55,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:55,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021867396] [2022-11-18 18:29:55,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021867396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:55,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374751078] [2022-11-18 18:29:55,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:29:55,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:55,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:55,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:55,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:29:56,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:29:56,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:56,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 18:29:56,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4333 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 2124 trivial. 0 not checked. [2022-11-18 18:29:56,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4333 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 2124 trivial. 0 not checked. [2022-11-18 18:30:00,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374751078] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:00,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:30:00,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 99 [2022-11-18 18:30:00,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668521588] [2022-11-18 18:30:00,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:00,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-11-18 18:30:00,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-11-18 18:30:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2022-11-18 18:30:00,111 INFO L87 Difference]: Start difference. First operand 204 states and 206 transitions. Second operand has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:02,188 INFO L93 Difference]: Finished difference Result 509 states and 611 transitions. [2022-11-18 18:30:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-11-18 18:30:02,190 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 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 203 [2022-11-18 18:30:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:02,194 INFO L225 Difference]: With dead ends: 509 [2022-11-18 18:30:02,194 INFO L226 Difference]: Without dead ends: 402 [2022-11-18 18:30:02,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2022-11-18 18:30:02,198 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 548 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:02,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 52 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 18:30:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-18 18:30:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2022-11-18 18:30:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.0074812967581048) internal successors, (404), 401 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 404 transitions. [2022-11-18 18:30:02,267 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 404 transitions. Word has length 203 [2022-11-18 18:30:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:02,267 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 404 transitions. [2022-11-18 18:30:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 404 transitions. [2022-11-18 18:30:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-18 18:30:02,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:02,276 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 96, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:02,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 18:30:02,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:02,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1887797439, now seen corresponding path program 5 times [2022-11-18 18:30:02,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:02,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9692695] [2022-11-18 18:30:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:02,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18440 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 9224 trivial. 0 not checked. [2022-11-18 18:30:12,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:12,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9692695] [2022-11-18 18:30:12,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9692695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:12,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69876831] [2022-11-18 18:30:12,653 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:30:12,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:12,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:12,654 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:12,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e001572-8f90-4b25-b90e-5242e26dac1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process