./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- 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-e04fb08 [2022-11-16 11:57:26,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:57:26,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:57:26,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:57:26,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:57:26,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:57:26,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:57:26,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:57:26,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:57:26,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:57:26,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:57:26,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:57:26,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:57:26,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:57:26,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:57:26,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:57:26,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:57:26,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:57:26,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:57:26,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:57:26,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:57:26,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:57:26,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:57:26,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:57:26,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:57:26,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:57:26,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:57:26,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:57:26,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:57:26,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:57:26,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:57:26,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:57:26,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:57:26,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:57:26,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:57:26,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:57:26,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:57:26,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:57:26,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:57:26,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:57:26,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:57:26,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:57:26,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:57:26,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:57:26,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:57:26,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:57:26,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:57:26,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:57:26,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:57:26,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:57:26,401 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:57:26,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:57:26,401 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:57:26,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:57:26,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:57:26,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:57:26,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:57:26,403 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:57:26,403 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:57:26,403 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:57:26,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:57:26,404 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:57:26,404 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:57:26,404 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:57:26,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:57:26,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:57:26,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:57:26,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:26,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:57:26,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:57:26,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:57:26,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:57:26,407 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_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-11-16 11:57:26,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:57:26,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:57:26,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:57:26,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:57:26,818 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:57:26,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-16 11:57:26,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/data/ddaa88825/ca9831077da349b087c2516511dfd2d9/FLAG191020a53 [2022-11-16 11:57:27,748 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:57:27,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-16 11:57:27,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/data/ddaa88825/ca9831077da349b087c2516511dfd2d9/FLAG191020a53 [2022-11-16 11:57:27,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/data/ddaa88825/ca9831077da349b087c2516511dfd2d9 [2022-11-16 11:57:27,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:57:27,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:57:27,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:27,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:57:27,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:57:27,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:27" (1/1) ... [2022-11-16 11:57:27,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72278526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:27, skipping insertion in model container [2022-11-16 11:57:27,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:27" (1/1) ... [2022-11-16 11:57:27,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:57:28,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:57:28,274 WARN L229 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_a12ca26d-3a34-4952-a81a-672387807dac/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-16 11:57:28,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:28,908 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:57:28,929 WARN L229 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_a12ca26d-3a34-4952-a81a-672387807dac/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-16 11:57:28,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:29,072 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:57:29,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29 WrapperNode [2022-11-16 11:57:29,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:29,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:29,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:57:29,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:57:29,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,169 INFO L138 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-11-16 11:57:29,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:29,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:57:29,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:57:29,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:57:29,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:57:29,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:57:29,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:57:29,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:57:29,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (1/1) ... [2022-11-16 11:57:29,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:29,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:29,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:29,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:57:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:57:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:57:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:57:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:57:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:57:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:57:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-11-16 11:57:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-11-16 11:57:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:57:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:57:29,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:57:29,361 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:57:29,650 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:57:29,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:57:30,026 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:57:30,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:57:30,036 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:57:30,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:30 BoogieIcfgContainer [2022-11-16 11:57:30,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:57:30,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:57:30,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:57:30,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:57:30,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:57:27" (1/3) ... [2022-11-16 11:57:30,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e9a986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:30, skipping insertion in model container [2022-11-16 11:57:30,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:29" (2/3) ... [2022-11-16 11:57:30,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e9a986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:30, skipping insertion in model container [2022-11-16 11:57:30,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:30" (3/3) ... [2022-11-16 11:57:30,061 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-11-16 11:57:30,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:57:30,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:57:30,091 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:57:30,178 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:57:30,224 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:57:30,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 105 transitions, 218 flow [2022-11-16 11:57:30,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 105 transitions, 218 flow [2022-11-16 11:57:30,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 105 transitions, 218 flow [2022-11-16 11:57:30,323 INFO L130 PetriNetUnfolder]: 7/104 cut-off events. [2022-11-16 11:57:30,324 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:57:30,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 7/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2022-11-16 11:57:30,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 798 [2022-11-16 11:57:36,109 INFO L134 LiptonReduction]: Checked pairs total: 1191 [2022-11-16 11:57:36,110 INFO L136 LiptonReduction]: Total number of compositions: 106 [2022-11-16 11:57:36,121 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 22 transitions, 52 flow [2022-11-16 11:57:36,140 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49 states, 43 states have (on average 2.116279069767442) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:36,173 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@4e8ffee7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:36,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 11:57:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 43 states have (on average 2.116279069767442) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 11:57:36,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:36,184 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 11:57:36,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash 399, now seen corresponding path program 1 times [2022-11-16 11:57:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:36,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106436281] [2022-11-16 11:57:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:36,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:36,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:36,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106436281] [2022-11-16 11:57:36,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106436281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:36,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:36,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 11:57:36,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020695822] [2022-11-16 11:57:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:57:36,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:57:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:57:36,408 INFO L87 Difference]: Start difference. First operand has 49 states, 43 states have (on average 2.116279069767442) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:36,480 INFO L93 Difference]: Finished difference Result 46 states and 88 transitions. [2022-11-16 11:57:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:57:36,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-16 11:57:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:36,497 INFO L225 Difference]: With dead ends: 46 [2022-11-16 11:57:36,497 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 11:57:36,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:57:36,506 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:36,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:57:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 11:57:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-16 11:57:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 2.046511627906977) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2022-11-16 11:57:36,578 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 1 [2022-11-16 11:57:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:36,579 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2022-11-16 11:57:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2022-11-16 11:57:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 11:57:36,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:36,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 11:57:36,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:57:36,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash 12179461, now seen corresponding path program 1 times [2022-11-16 11:57:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:36,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354525529] [2022-11-16 11:57:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:36,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354525529] [2022-11-16 11:57:36,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354525529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:36,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:36,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:57:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897735240] [2022-11-16 11:57:36,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:36,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:57:36,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:36,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:57:36,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:57:36,815 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:36,906 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2022-11-16 11:57:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:57:36,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 11:57:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:36,915 INFO L225 Difference]: With dead ends: 64 [2022-11-16 11:57:36,915 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 11:57:36,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:57:36,918 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:36,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:57:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 11:57:36,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2022-11-16 11:57:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2022-11-16 11:57:36,929 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 4 [2022-11-16 11:57:36,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:36,930 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2022-11-16 11:57:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2022-11-16 11:57:36,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:57:36,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:36,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:36,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:57:36,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2060232627, now seen corresponding path program 1 times [2022-11-16 11:57:36,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:36,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988266725] [2022-11-16 11:57:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:36,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:37,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:37,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988266725] [2022-11-16 11:57:37,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988266725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:37,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:37,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:57:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514257150] [2022-11-16 11:57:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:57:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:57:37,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:57:37,052 INFO L87 Difference]: Start difference. First operand 52 states and 100 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:37,085 INFO L93 Difference]: Finished difference Result 46 states and 88 transitions. [2022-11-16 11:57:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:57:37,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-16 11:57:37,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:37,087 INFO L225 Difference]: With dead ends: 46 [2022-11-16 11:57:37,087 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 11:57:37,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:57:37,089 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:37,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:57:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 11:57:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-16 11:57:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2022-11-16 11:57:37,098 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 7 [2022-11-16 11:57:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:37,099 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2022-11-16 11:57:37,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2022-11-16 11:57:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:57:37,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:37,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:57:37,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2060232626, now seen corresponding path program 1 times [2022-11-16 11:57:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:37,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667624760] [2022-11-16 11:57:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:37,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:37,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667624760] [2022-11-16 11:57:37,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667624760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:37,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:37,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:57:37,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105936749] [2022-11-16 11:57:37,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:37,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:57:37,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:37,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:57:37,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:57:37,231 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:37,259 INFO L93 Difference]: Finished difference Result 40 states and 76 transitions. [2022-11-16 11:57:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:57:37,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-16 11:57:37,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:37,261 INFO L225 Difference]: With dead ends: 40 [2022-11-16 11:57:37,261 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 11:57:37,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:57:37,262 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:37,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:57:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 11:57:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-16 11:57:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 39 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2022-11-16 11:57:37,270 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 7 [2022-11-16 11:57:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:37,271 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2022-11-16 11:57:37,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2022-11-16 11:57:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:57:37,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:37,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:37,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:57:37,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1901133790, now seen corresponding path program 1 times [2022-11-16 11:57:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:37,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683459042] [2022-11-16 11:57:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:37,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683459042] [2022-11-16 11:57:37,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683459042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:37,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642423011] [2022-11-16 11:57:37,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:57:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:57:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:57:37,383 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:37,436 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2022-11-16 11:57:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:57:37,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:57:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:37,438 INFO L225 Difference]: With dead ends: 64 [2022-11-16 11:57:37,439 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 11:57:37,439 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 [2022-11-16 11:57:37,441 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:37,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:57:37,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 11:57:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2022-11-16 11:57:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2022-11-16 11:57:37,450 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 11 [2022-11-16 11:57:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:37,451 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2022-11-16 11:57:37,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2022-11-16 11:57:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:57:37,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:37,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:37,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:57:37,454 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash -783356264, now seen corresponding path program 1 times [2022-11-16 11:57:37,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:37,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311602744] [2022-11-16 11:57:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:37,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:37,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311602744] [2022-11-16 11:57:37,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311602744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:37,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512310268] [2022-11-16 11:57:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:37,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:37,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:37,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:57:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:57:37,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:37,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:37,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512310268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:37,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:37,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-16 11:57:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536458497] [2022-11-16 11:57:37,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:37,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:57:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:57:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:57:37,959 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:38,320 INFO L93 Difference]: Finished difference Result 214 states and 424 transitions. [2022-11-16 11:57:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:57:38,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:57:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:38,323 INFO L225 Difference]: With dead ends: 214 [2022-11-16 11:57:38,323 INFO L226 Difference]: Without dead ends: 214 [2022-11-16 11:57:38,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:57:38,325 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:38,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 0 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:57:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-16 11:57:38,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 169. [2022-11-16 11:57:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.9880952380952381) internal successors, (334), 168 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 334 transitions. [2022-11-16 11:57:38,358 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 334 transitions. Word has length 15 [2022-11-16 11:57:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:38,363 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 334 transitions. [2022-11-16 11:57:38,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 334 transitions. [2022-11-16 11:57:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 11:57:38,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:38,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:38,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:38,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:38,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:38,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash 276953124, now seen corresponding path program 2 times [2022-11-16 11:57:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:38,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305698019] [2022-11-16 11:57:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:38,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:57:38,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305698019] [2022-11-16 11:57:38,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305698019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:38,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125273693] [2022-11-16 11:57:38,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:57:38,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:38,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:38,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:57:39,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:57:39,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:57:39,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:57:39,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:57:39,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:57:39,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125273693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:39,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:39,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-16 11:57:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211669521] [2022-11-16 11:57:39,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:39,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:57:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:39,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:57:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:57:39,403 INFO L87 Difference]: Start difference. First operand 169 states and 334 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:39,690 INFO L93 Difference]: Finished difference Result 367 states and 730 transitions. [2022-11-16 11:57:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:57:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-16 11:57:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:39,694 INFO L225 Difference]: With dead ends: 367 [2022-11-16 11:57:39,694 INFO L226 Difference]: Without dead ends: 367 [2022-11-16 11:57:39,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:57:39,695 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 134 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:39,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:57:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-16 11:57:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-11-16 11:57:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.994535519125683) internal successors, (730), 366 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 730 transitions. [2022-11-16 11:57:39,757 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 730 transitions. Word has length 28 [2022-11-16 11:57:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:39,759 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 730 transitions. [2022-11-16 11:57:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 730 transitions. [2022-11-16 11:57:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 11:57:39,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:39,767 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:39,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:39,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:39,968 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1368845340, now seen corresponding path program 3 times [2022-11-16 11:57:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:39,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810596562] [2022-11-16 11:57:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:39,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:57:40,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:40,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810596562] [2022-11-16 11:57:40,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810596562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:40,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312801313] [2022-11-16 11:57:40,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:57:40,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:40,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:40,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:40,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:57:40,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:57:40,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:57:40,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:40,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-16 11:57:40,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-16 11:57:40,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312801313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:40,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:40,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-11-16 11:57:40,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674739795] [2022-11-16 11:57:40,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:40,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:57:40,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:40,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:57:40,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:57:40,805 INFO L87 Difference]: Start difference. First operand 367 states and 730 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:43,079 INFO L93 Difference]: Finished difference Result 1030 states and 2056 transitions. [2022-11-16 11:57:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-16 11:57:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-16 11:57:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:43,087 INFO L225 Difference]: With dead ends: 1030 [2022-11-16 11:57:43,087 INFO L226 Difference]: Without dead ends: 1030 [2022-11-16 11:57:43,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2184, Invalid=4956, Unknown=0, NotChecked=0, Total=7140 [2022-11-16 11:57:43,092 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 980 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:43,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 0 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:57:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-16 11:57:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 976. [2022-11-16 11:57:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 1.9979487179487179) internal successors, (1948), 975 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1948 transitions. [2022-11-16 11:57:43,149 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1948 transitions. Word has length 46 [2022-11-16 11:57:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:43,150 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1948 transitions. [2022-11-16 11:57:43,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1948 transitions. [2022-11-16 11:57:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:57:43,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:43,155 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:43,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:57:43,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:43,362 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash -727339270, now seen corresponding path program 4 times [2022-11-16 11:57:43,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:43,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841720298] [2022-11-16 11:57:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:43,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:57:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:44,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841720298] [2022-11-16 11:57:44,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841720298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:44,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299537022] [2022-11-16 11:57:44,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:57:44,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:44,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:44,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:44,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:57:44,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:57:44,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:57:44,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:57:44,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:57:44,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:57:44,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299537022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:44,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:44,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2022-11-16 11:57:44,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492772995] [2022-11-16 11:57:44,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:44,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:57:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:44,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:57:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:57:44,923 INFO L87 Difference]: Start difference. First operand 976 states and 1948 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:45,322 INFO L93 Difference]: Finished difference Result 1705 states and 3406 transitions. [2022-11-16 11:57:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:57:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 0 states have call successors, (0), 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 65 [2022-11-16 11:57:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:45,332 INFO L225 Difference]: With dead ends: 1705 [2022-11-16 11:57:45,333 INFO L226 Difference]: Without dead ends: 1705 [2022-11-16 11:57:45,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:57:45,334 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 328 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:45,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 0 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:57:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-11-16 11:57:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1705. [2022-11-16 11:57:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.9988262910798122) internal successors, (3406), 1704 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 3406 transitions. [2022-11-16 11:57:45,416 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 3406 transitions. Word has length 65 [2022-11-16 11:57:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:45,417 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 3406 transitions. [2022-11-16 11:57:45,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 3406 transitions. [2022-11-16 11:57:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:57:45,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:45,432 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:45,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:45,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:45,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash -326081780, now seen corresponding path program 5 times [2022-11-16 11:57:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:45,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070044028] [2022-11-16 11:57:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:45,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-16 11:57:46,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:46,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070044028] [2022-11-16 11:57:46,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070044028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:46,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222607309] [2022-11-16 11:57:46,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:57:46,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:46,018 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:46,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:57:46,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-11-16 11:57:46,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:57:46,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:57:46,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-16 11:57:46,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-16 11:57:46,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222607309] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:46,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:46,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-11-16 11:57:46,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397090167] [2022-11-16 11:57:46,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:46,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:57:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:57:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:57:46,660 INFO L87 Difference]: Start difference. First operand 1705 states and 3406 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:46,949 INFO L93 Difference]: Finished difference Result 3721 states and 7438 transitions. [2022-11-16 11:57:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:57:46,950 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 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 92 [2022-11-16 11:57:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:46,968 INFO L225 Difference]: With dead ends: 3721 [2022-11-16 11:57:46,968 INFO L226 Difference]: Without dead ends: 3721 [2022-11-16 11:57:46,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:57:46,969 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 182 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:46,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 0 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:57:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2022-11-16 11:57:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721. [2022-11-16 11:57:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 1.999462365591398) internal successors, (7438), 3720 states have internal predecessors, (7438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 7438 transitions. [2022-11-16 11:57:47,091 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 7438 transitions. Word has length 92 [2022-11-16 11:57:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:47,092 INFO L495 AbstractCegarLoop]: Abstraction has 3721 states and 7438 transitions. [2022-11-16 11:57:47,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 7438 transitions. [2022-11-16 11:57:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 11:57:47,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:47,102 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:47,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:47,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:47,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:47,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1032697052, now seen corresponding path program 6 times [2022-11-16 11:57:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:47,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043256483] [2022-11-16 11:57:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 20 proven. 378 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-16 11:57:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043256483] [2022-11-16 11:57:48,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043256483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970476206] [2022-11-16 11:57:48,164 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:57:48,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:48,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:48,168 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:48,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:57:49,070 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-16 11:57:49,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:57:49,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:57:49,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 20 proven. 378 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-16 11:57:49,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 20 proven. 378 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-16 11:57:49,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970476206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:49,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:49,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:57:49,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002208519] [2022-11-16 11:57:49,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:49,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:57:49,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:57:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:57:49,635 INFO L87 Difference]: Start difference. First operand 3721 states and 7438 transitions. Second operand has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:50,012 INFO L93 Difference]: Finished difference Result 5233 states and 10462 transitions. [2022-11-16 11:57:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:57:50,013 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-16 11:57:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:50,035 INFO L225 Difference]: With dead ends: 5233 [2022-11-16 11:57:50,036 INFO L226 Difference]: Without dead ends: 5233 [2022-11-16 11:57:50,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 232 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:57:50,037 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 345 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:50,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 0 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:57:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-11-16 11:57:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 5233. [2022-11-16 11:57:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.9996177370030581) internal successors, (10462), 5232 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 10462 transitions. [2022-11-16 11:57:50,216 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 10462 transitions. Word has length 124 [2022-11-16 11:57:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:50,216 INFO L495 AbstractCegarLoop]: Abstraction has 5233 states and 10462 transitions. [2022-11-16 11:57:50,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 10462 transitions. [2022-11-16 11:57:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 11:57:50,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:50,234 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:50,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:50,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:50,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:57:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash 25088056, now seen corresponding path program 7 times [2022-11-16 11:57:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:50,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832568762] [2022-11-16 11:57:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832568762] [2022-11-16 11:57:57,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832568762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41072412] [2022-11-16 11:57:57,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:57:57,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:57,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:57,395 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:57,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:57:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:57,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 11:57:57,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:58,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:59,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41072412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:59,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:59,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 11:57:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742150443] [2022-11-16 11:57:59,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:59,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 11:57:59,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:59,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 11:57:59,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 11:57:59,266 INFO L87 Difference]: Start difference. First operand 5233 states and 10462 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:13,273 INFO L93 Difference]: Finished difference Result 34250 states and 68495 transitions. [2022-11-16 11:59:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2022-11-16 11:59:13,274 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 11:59:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:13,454 INFO L225 Difference]: With dead ends: 34250 [2022-11-16 11:59:13,454 INFO L226 Difference]: Without dead ends: 34248 [2022-11-16 11:59:13,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 290 SyntacticMatches, 4 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26335 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1043, Invalid=84513, Unknown=0, NotChecked=0, Total=85556 [2022-11-16 11:59:13,474 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1619 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 124726 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 124726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:13,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 0 Invalid, 124993 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [267 Valid, 124726 Invalid, 0 Unknown, 0 Unchecked, 61.8s Time] [2022-11-16 11:59:13,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34248 states. [2022-11-16 11:59:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34248 to 5485. [2022-11-16 11:59:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 2.014040846097739) internal successors, (11045), 5484 states have internal predecessors, (11045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 11045 transitions. [2022-11-16 11:59:13,956 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 11045 transitions. Word has length 148 [2022-11-16 11:59:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:13,957 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 11045 transitions. [2022-11-16 11:59:13,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 11045 transitions. [2022-11-16 11:59:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 11:59:13,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:13,972 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:13,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:14,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:59:14,179 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:59:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -493453964, now seen corresponding path program 8 times [2022-11-16 11:59:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:14,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638140272] [2022-11-16 11:59:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2022-11-16 11:59:14,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:14,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638140272] [2022-11-16 11:59:14,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638140272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:14,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:14,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:14,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057286813] [2022-11-16 11:59:14,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:14,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:59:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:14,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:59:14,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:59:14,626 INFO L87 Difference]: Start difference. First operand 5485 states and 11045 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:14,671 INFO L93 Difference]: Finished difference Result 2945 states and 3782 transitions. [2022-11-16 11:59:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:59:14,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-11-16 11:59:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:14,680 INFO L225 Difference]: With dead ends: 2945 [2022-11-16 11:59:14,680 INFO L226 Difference]: Without dead ends: 2945 [2022-11-16 11:59:14,680 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 [2022-11-16 11:59:14,681 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:14,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:59:14,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-11-16 11:59:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2924. [2022-11-16 11:59:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2923 states have (on average 1.2863496407800206) internal successors, (3760), 2923 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3760 transitions. [2022-11-16 11:59:14,744 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3760 transitions. Word has length 148 [2022-11-16 11:59:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:14,744 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 3760 transitions. [2022-11-16 11:59:14,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3760 transitions. [2022-11-16 11:59:14,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 11:59:14,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:14,752 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:14,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:59:14,753 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 11:59:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash -954207024, now seen corresponding path program 9 times [2022-11-16 11:59:14,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:14,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295931078] [2022-11-16 11:59:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:14,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:20,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:20,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295931078] [2022-11-16 11:59:20,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295931078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:59:20,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824150880] [2022-11-16 11:59:20,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:59:20,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:20,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:20,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:20,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:59:21,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-11-16 11:59:21,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:59:21,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 11:59:21,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:22,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:22,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824150880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:22,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:59:22,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 11:59:22,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050257692] [2022-11-16 11:59:22,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:22,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 11:59:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 11:59:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 11:59:22,952 INFO L87 Difference]: Start difference. First operand 2924 states and 3760 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:24,941 INFO L93 Difference]: Finished difference Result 15394 states and 22571 transitions. [2022-11-16 12:00:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 291 states. [2022-11-16 12:00:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:00:24,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:24,985 INFO L225 Difference]: With dead ends: 15394 [2022-11-16 12:00:24,985 INFO L226 Difference]: Without dead ends: 15392 [2022-11-16 12:00:24,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26106 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1039, Invalid=83933, Unknown=0, NotChecked=0, Total=84972 [2022-11-16 12:00:24,995 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1399 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101462 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 101501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 101462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:24,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 0 Invalid, 101501 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [39 Valid, 101462 Invalid, 0 Unknown, 0 Unchecked, 50.2s Time] [2022-11-16 12:00:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15392 states. [2022-11-16 12:00:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15392 to 3003. [2022-11-16 12:00:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 1.2864756828780812) internal successors, (3862), 3002 states have internal predecessors, (3862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 3862 transitions. [2022-11-16 12:00:25,182 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 3862 transitions. Word has length 148 [2022-11-16 12:00:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:25,182 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 3862 transitions. [2022-11-16 12:00:25,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 3862 transitions. [2022-11-16 12:00:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:00:25,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:25,192 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:25,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:00:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:00:25,403 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:00:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -381703790, now seen corresponding path program 10 times [2022-11-16 12:00:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:25,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561062607] [2022-11-16 12:00:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:31,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:31,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561062607] [2022-11-16 12:00:31,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561062607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:31,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33171907] [2022-11-16 12:00:31,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:00:31,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:31,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:31,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:31,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:00:34,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:00:34,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:34,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:00:34,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:34,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:35,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33171907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:35,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:00:35,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:00:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495313195] [2022-11-16 12:00:35,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:35,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:00:35,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:35,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:00:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:00:35,750 INFO L87 Difference]: Start difference. First operand 3003 states and 3862 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:32,466 INFO L93 Difference]: Finished difference Result 15068 states and 22075 transitions. [2022-11-16 12:01:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2022-11-16 12:01:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:01:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:32,493 INFO L225 Difference]: With dead ends: 15068 [2022-11-16 12:01:32,493 INFO L226 Difference]: Without dead ends: 15066 [2022-11-16 12:01:32,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25651 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1031, Invalid=82779, Unknown=0, NotChecked=0, Total=83810 [2022-11-16 12:01:32,499 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1379 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 100440 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 100440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:32,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 0 Invalid, 100478 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [38 Valid, 100440 Invalid, 0 Unknown, 0 Unchecked, 46.1s Time] [2022-11-16 12:01:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15066 states. [2022-11-16 12:01:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15066 to 3005. [2022-11-16 12:01:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 3004 states have (on average 1.2862849533954728) internal successors, (3864), 3004 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 3864 transitions. [2022-11-16 12:01:32,665 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 3864 transitions. Word has length 148 [2022-11-16 12:01:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:32,666 INFO L495 AbstractCegarLoop]: Abstraction has 3005 states and 3864 transitions. [2022-11-16 12:01:32,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 3864 transitions. [2022-11-16 12:01:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:01:32,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:32,674 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:32,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:01:32,884 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:01:32,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1748280506, now seen corresponding path program 11 times [2022-11-16 12:01:32,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:32,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156739331] [2022-11-16 12:01:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:32,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:38,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:38,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156739331] [2022-11-16 12:01:38,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156739331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248522807] [2022-11-16 12:01:38,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:01:38,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:38,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:38,197 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:38,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:01:38,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-16 12:01:38,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:01:38,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:01:38,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:39,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:40,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248522807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:40,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:40,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:01:40,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444013098] [2022-11-16 12:01:40,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:40,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:01:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:40,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:01:40,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:01:40,282 INFO L87 Difference]: Start difference. First operand 3005 states and 3864 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:39,052 INFO L93 Difference]: Finished difference Result 14973 states and 21933 transitions. [2022-11-16 12:02:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2022-11-16 12:02:39,053 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:02:39,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:39,077 INFO L225 Difference]: With dead ends: 14973 [2022-11-16 12:02:39,077 INFO L226 Difference]: Without dead ends: 14971 [2022-11-16 12:02:39,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25200 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=1023, Invalid=81633, Unknown=0, NotChecked=0, Total=82656 [2022-11-16 12:02:39,081 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1369 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99720 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 99720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:39,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 0 Invalid, 99758 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [38 Valid, 99720 Invalid, 0 Unknown, 0 Unchecked, 47.6s Time] [2022-11-16 12:02:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14971 states. [2022-11-16 12:02:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14971 to 3007. [2022-11-16 12:02:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.2860944777112442) internal successors, (3866), 3006 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 3866 transitions. [2022-11-16 12:02:39,239 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 3866 transitions. Word has length 148 [2022-11-16 12:02:39,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:39,240 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 3866 transitions. [2022-11-16 12:02:39,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 3866 transitions. [2022-11-16 12:02:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:02:39,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:39,249 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:39,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:02:39,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:02:39,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:02:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:39,465 INFO L85 PathProgramCache]: Analyzing trace with hash -788589830, now seen corresponding path program 12 times [2022-11-16 12:02:39,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:39,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896138297] [2022-11-16 12:02:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:44,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896138297] [2022-11-16 12:02:44,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896138297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:02:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100758392] [2022-11-16 12:02:44,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:02:44,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:02:44,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:02:44,496 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:02:44,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:02:45,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-16 12:02:45,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:02:45,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:02:45,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:02:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:46,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:02:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:46,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100758392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:02:46,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:02:46,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:02:46,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588642858] [2022-11-16 12:02:46,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:02:46,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:02:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:46,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:02:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:02:46,851 INFO L87 Difference]: Start difference. First operand 3007 states and 3866 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:46,445 INFO L93 Difference]: Finished difference Result 14884 states and 21800 transitions. [2022-11-16 12:03:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-11-16 12:03:46,448 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:03:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:46,480 INFO L225 Difference]: With dead ends: 14884 [2022-11-16 12:03:46,480 INFO L226 Difference]: Without dead ends: 14882 [2022-11-16 12:03:46,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24753 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1015, Invalid=80495, Unknown=0, NotChecked=0, Total=81510 [2022-11-16 12:03:46,486 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1359 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98999 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 98999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:46,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 0 Invalid, 99037 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [38 Valid, 98999 Invalid, 0 Unknown, 0 Unchecked, 48.3s Time] [2022-11-16 12:03:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14882 states. [2022-11-16 12:03:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14882 to 3009. [2022-11-16 12:03:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 3008 states have (on average 1.2859042553191489) internal successors, (3868), 3008 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 3868 transitions. [2022-11-16 12:03:46,640 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 3868 transitions. Word has length 148 [2022-11-16 12:03:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:46,640 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 3868 transitions. [2022-11-16 12:03:46,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 3868 transitions. [2022-11-16 12:03:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:03:46,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:46,649 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:46,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:46,866 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:03:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1432866990, now seen corresponding path program 13 times [2022-11-16 12:03:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528986275] [2022-11-16 12:03:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:46,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:51,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:51,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528986275] [2022-11-16 12:03:51,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528986275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:51,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635472813] [2022-11-16 12:03:51,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:03:51,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:51,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:51,286 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:51,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:03:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:51,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:03:51,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:52,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:03:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:53,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635472813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:03:53,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:03:53,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:03:53,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743581628] [2022-11-16 12:03:53,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:03:53,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:03:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:03:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:03:53,129 INFO L87 Difference]: Start difference. First operand 3009 states and 3868 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:52,646 INFO L93 Difference]: Finished difference Result 14801 states and 21676 transitions. [2022-11-16 12:04:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2022-11-16 12:04:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:04:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:52,674 INFO L225 Difference]: With dead ends: 14801 [2022-11-16 12:04:52,674 INFO L226 Difference]: Without dead ends: 14799 [2022-11-16 12:04:52,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24310 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1007, Invalid=79365, Unknown=0, NotChecked=0, Total=80372 [2022-11-16 12:04:52,680 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1349 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98278 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 98278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:52,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 0 Invalid, 98316 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [38 Valid, 98278 Invalid, 0 Unknown, 0 Unchecked, 48.4s Time] [2022-11-16 12:04:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14799 states. [2022-11-16 12:04:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14799 to 3011. [2022-11-16 12:04:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 3010 states have (on average 1.2857142857142858) internal successors, (3870), 3010 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3870 transitions. [2022-11-16 12:04:52,832 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3870 transitions. Word has length 148 [2022-11-16 12:04:52,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:52,833 INFO L495 AbstractCegarLoop]: Abstraction has 3011 states and 3870 transitions. [2022-11-16 12:04:52,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3870 transitions. [2022-11-16 12:04:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:04:52,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:52,842 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:52,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:53,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:04:53,059 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:04:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash -686648222, now seen corresponding path program 14 times [2022-11-16 12:04:53,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:53,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333859024] [2022-11-16 12:04:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:53,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:57,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333859024] [2022-11-16 12:04:57,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333859024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:57,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740833772] [2022-11-16 12:04:57,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:04:57,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:57,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:57,500 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:57,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:04:57,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:04:57,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:04:57,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:04:57,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:58,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:59,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740833772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:59,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:59,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:04:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548698770] [2022-11-16 12:04:59,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:04:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:04:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:04:59,342 INFO L87 Difference]: Start difference. First operand 3011 states and 3870 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:57,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:57,828 INFO L93 Difference]: Finished difference Result 14724 states and 21561 transitions. [2022-11-16 12:05:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-11-16 12:05:57,829 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:05:57,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:57,849 INFO L225 Difference]: With dead ends: 14724 [2022-11-16 12:05:57,849 INFO L226 Difference]: Without dead ends: 14722 [2022-11-16 12:05:57,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23871 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=999, Invalid=78243, Unknown=0, NotChecked=0, Total=79242 [2022-11-16 12:05:57,853 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1339 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97557 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 97557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:57,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 0 Invalid, 97595 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [38 Valid, 97557 Invalid, 0 Unknown, 0 Unchecked, 47.6s Time] [2022-11-16 12:05:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14722 states. [2022-11-16 12:05:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14722 to 3013. [2022-11-16 12:05:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 1.2855245683930943) internal successors, (3872), 3012 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3872 transitions. [2022-11-16 12:05:58,047 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3872 transitions. Word has length 148 [2022-11-16 12:05:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:58,048 INFO L495 AbstractCegarLoop]: Abstraction has 3013 states and 3872 transitions. [2022-11-16 12:05:58,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3872 transitions. [2022-11-16 12:05:58,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:05:58,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:58,056 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:58,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:58,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:58,266 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:05:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash 965500438, now seen corresponding path program 15 times [2022-11-16 12:05:58,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:58,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546476146] [2022-11-16 12:05:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:58,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:02,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:02,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546476146] [2022-11-16 12:06:02,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546476146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:02,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29789983] [2022-11-16 12:06:02,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:06:02,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:02,863 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:02,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:06:03,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-16 12:06:03,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:03,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:06:03,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:04,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29789983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:05,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:05,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:06:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688151682] [2022-11-16 12:06:05,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:05,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:06:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:06:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:06:05,379 INFO L87 Difference]: Start difference. First operand 3013 states and 3872 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:03,787 INFO L93 Difference]: Finished difference Result 14653 states and 21455 transitions. [2022-11-16 12:07:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2022-11-16 12:07:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:07:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:03,807 INFO L225 Difference]: With dead ends: 14653 [2022-11-16 12:07:03,807 INFO L226 Difference]: Without dead ends: 14651 [2022-11-16 12:07:03,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23436 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=991, Invalid=77129, Unknown=0, NotChecked=0, Total=78120 [2022-11-16 12:07:03,811 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96836 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 96836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:03,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 0 Invalid, 96874 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [38 Valid, 96836 Invalid, 0 Unknown, 0 Unchecked, 47.5s Time] [2022-11-16 12:07:03,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14651 states. [2022-11-16 12:07:03,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14651 to 3015. [2022-11-16 12:07:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 3014 states have (on average 1.285335102853351) internal successors, (3874), 3014 states have internal predecessors, (3874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3874 transitions. [2022-11-16 12:07:03,946 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3874 transitions. Word has length 148 [2022-11-16 12:07:03,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:03,946 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 3874 transitions. [2022-11-16 12:07:03,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3874 transitions. [2022-11-16 12:07:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:07:03,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:03,955 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:03,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:04,166 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:07:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash -773706294, now seen corresponding path program 16 times [2022-11-16 12:07:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:04,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483677488] [2022-11-16 12:07:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:08,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:08,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483677488] [2022-11-16 12:07:08,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483677488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:08,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558374857] [2022-11-16 12:07:08,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:07:08,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:08,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:08,710 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:08,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:07:11,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:07:11,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:11,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:07:11,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:12,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:13,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558374857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:13,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:13,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:07:13,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503078644] [2022-11-16 12:07:13,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:13,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:07:13,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:13,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:07:13,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:07:13,222 INFO L87 Difference]: Start difference. First operand 3015 states and 3874 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:12,093 INFO L93 Difference]: Finished difference Result 14588 states and 21358 transitions. [2022-11-16 12:08:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2022-11-16 12:08:12,093 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:08:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:12,114 INFO L225 Difference]: With dead ends: 14588 [2022-11-16 12:08:12,114 INFO L226 Difference]: Without dead ends: 14586 [2022-11-16 12:08:12,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23005 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=983, Invalid=76023, Unknown=0, NotChecked=0, Total=77006 [2022-11-16 12:08:12,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1319 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96115 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 96115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:12,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 0 Invalid, 96153 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [38 Valid, 96115 Invalid, 0 Unknown, 0 Unchecked, 47.8s Time] [2022-11-16 12:08:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14586 states. [2022-11-16 12:08:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14586 to 3017. [2022-11-16 12:08:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 3016 states have (on average 1.2851458885941645) internal successors, (3876), 3016 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 3876 transitions. [2022-11-16 12:08:12,242 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 3876 transitions. Word has length 148 [2022-11-16 12:08:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:12,243 INFO L495 AbstractCegarLoop]: Abstraction has 3017 states and 3876 transitions. [2022-11-16 12:08:12,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 3876 transitions. [2022-11-16 12:08:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:08:12,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:12,254 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:12,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:12,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:12,465 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:08:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1499397250, now seen corresponding path program 17 times [2022-11-16 12:08:12,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:12,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441799676] [2022-11-16 12:08:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:12,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:16,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441799676] [2022-11-16 12:08:16,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441799676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108395730] [2022-11-16 12:08:16,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:08:16,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:16,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:16,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:08:17,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-16 12:08:17,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:17,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:08:17,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:18,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:18,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108395730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:18,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:08:18,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:08:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791858179] [2022-11-16 12:08:18,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:18,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:08:18,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:18,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:08:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:08:18,752 INFO L87 Difference]: Start difference. First operand 3017 states and 3876 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:10,597 INFO L93 Difference]: Finished difference Result 14529 states and 21270 transitions. [2022-11-16 12:09:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2022-11-16 12:09:10,598 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-16 12:09:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:10,618 INFO L225 Difference]: With dead ends: 14529 [2022-11-16 12:09:10,618 INFO L226 Difference]: Without dead ends: 14527 [2022-11-16 12:09:10,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 288 SyntacticMatches, 6 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22578 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=975, Invalid=74925, Unknown=0, NotChecked=0, Total=75900 [2022-11-16 12:09:10,622 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1309 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 95394 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 95394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:10,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 0 Invalid, 95432 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [38 Valid, 95394 Invalid, 0 Unknown, 0 Unchecked, 42.2s Time] [2022-11-16 12:09:10,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14527 states. [2022-11-16 12:09:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14527 to 3019. [2022-11-16 12:09:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3018 states have (on average 1.284956925115971) internal successors, (3878), 3018 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3878 transitions. [2022-11-16 12:09:10,720 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3878 transitions. Word has length 148 [2022-11-16 12:09:10,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:10,721 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 3878 transitions. [2022-11-16 12:09:10,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3878 transitions. [2022-11-16 12:09:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:09:10,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:10,730 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:10,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:10,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:09:10,940 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:09:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1344938190, now seen corresponding path program 18 times [2022-11-16 12:09:10,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:10,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477621996] [2022-11-16 12:09:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:10,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:15,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:15,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477621996] [2022-11-16 12:09:15,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477621996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:15,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552247985] [2022-11-16 12:09:15,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:09:15,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:15,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:15,120 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:15,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12ca26d-3a34-4952-a81a-672387807dac/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:09:16,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-16 12:09:16,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:16,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 168 conjunts are in the unsatisfiable core [2022-11-16 12:09:16,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:16,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:17,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552247985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:17,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:17,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-11-16 12:09:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304575062] [2022-11-16 12:09:17,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:17,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-16 12:09:17,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-16 12:09:17,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 12:09:17,467 INFO L87 Difference]: Start difference. First operand 3019 states and 3878 transitions. Second operand has 63 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)