./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a --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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- 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-b5237d8 [2022-11-21 16:27:29,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:27:29,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:27:29,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:27:29,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:27:29,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:27:29,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:27:29,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:27:29,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:27:29,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:27:29,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:27:29,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:27:29,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:27:29,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:27:29,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:27:29,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:27:29,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:27:29,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:27:29,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:27:29,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:27:29,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:27:29,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:27:29,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:27:29,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:27:29,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:27:29,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:27:29,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:27:29,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:27:29,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:27:29,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:27:29,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:27:29,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:27:29,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:27:29,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:27:29,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:27:29,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:27:29,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:27:29,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:27:29,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:27:29,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:27:29,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:27:29,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:27:29,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:27:29,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:27:29,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:27:29,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:27:29,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:27:29,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:27:29,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:27:29,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:27:29,765 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:27:29,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:27:29,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:27:29,770 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:27:29,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:27:29,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:27:29,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:27:29,771 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:27:29,771 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:27:29,771 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:27:29,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:27:29,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:27:29,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:27:29,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:27:29,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:27:29,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:27:29,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:27:29,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:27:29,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:27:29,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:27:29,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:27:29,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:27:29,775 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_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2022-11-21 16:27:30,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:27:30,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:27:30,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:27:30,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:27:30,205 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:27:30,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-11-21 16:27:33,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:27:33,969 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:27:33,970 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-11-21 16:27:33,992 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/data/532b9dab1/0d4e7b0dacc54635b15f57b5369d3134/FLAG3bfa6c8d1 [2022-11-21 16:27:34,010 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/data/532b9dab1/0d4e7b0dacc54635b15f57b5369d3134 [2022-11-21 16:27:34,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:27:34,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:27:34,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:27:34,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:27:34,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:27:34,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:34,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9158847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34, skipping insertion in model container [2022-11-21 16:27:34,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:34,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:27:34,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:27:34,751 WARN L237 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_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-11-21 16:27:34,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:27:34,842 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:27:34,908 WARN L237 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_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-11-21 16:27:34,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:27:34,987 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:27:34,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34 WrapperNode [2022-11-21 16:27:34,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:27:34,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:27:34,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:27:34,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:27:34,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,056 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 247 [2022-11-21 16:27:35,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:27:35,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:27:35,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:27:35,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:27:35,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:27:35,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:27:35,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:27:35,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:27:35,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (1/1) ... [2022-11-21 16:27:35,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:27:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:27:35,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:27:35,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:27:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:27:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:27:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:27:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:27:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:27:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:27:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 16:27:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 16:27:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:27:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:27:35,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:27:35,206 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:27:35,385 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:27:35,392 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:27:36,035 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:27:36,048 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:27:36,048 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-21 16:27:36,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:27:36 BoogieIcfgContainer [2022-11-21 16:27:36,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:27:36,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:27:36,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:27:36,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:27:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:27:34" (1/3) ... [2022-11-21 16:27:36,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24321e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:27:36, skipping insertion in model container [2022-11-21 16:27:36,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:34" (2/3) ... [2022-11-21 16:27:36,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24321e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:27:36, skipping insertion in model container [2022-11-21 16:27:36,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:27:36" (3/3) ... [2022-11-21 16:27:36,064 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2022-11-21 16:27:36,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:27:36,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-11-21 16:27:36,089 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:27:36,310 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 16:27:36,362 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 16:27:36,382 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 293 transitions, 594 flow [2022-11-21 16:27:36,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 293 transitions, 594 flow [2022-11-21 16:27:36,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 293 transitions, 594 flow [2022-11-21 16:27:36,598 INFO L130 PetriNetUnfolder]: 73/459 cut-off events. [2022-11-21 16:27:36,599 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 16:27:36,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 459 events. 73/459 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2382 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2022-11-21 16:27:36,642 INFO L119 LiptonReduction]: Number of co-enabled transitions 27864 [2022-11-21 16:27:45,046 INFO L134 LiptonReduction]: Checked pairs total: 57555 [2022-11-21 16:27:45,047 INFO L136 LiptonReduction]: Total number of compositions: 289 [2022-11-21 16:27:45,061 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 134 transitions, 276 flow [2022-11-21 16:27:45,212 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1950 states, 1563 states have (on average 3.3544465770953296) internal successors, (5243), 1949 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:45,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:27:45,254 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;@3a814e49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:27:45,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-21 16:27:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 1950 states, 1563 states have (on average 3.3544465770953296) internal successors, (5243), 1949 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:27:45,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:45,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:27:45,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-21 16:27:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1154427, now seen corresponding path program 1 times [2022-11-21 16:27:45,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:45,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79331733] [2022-11-21 16:27:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:45,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:45,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:45,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79331733] [2022-11-21 16:27:45,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79331733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:27:45,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:27:45,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:27:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755687265] [2022-11-21 16:27:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:27:45,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:27:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:27:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:27:45,693 INFO L87 Difference]: Start difference. First operand has 1950 states, 1563 states have (on average 3.3544465770953296) internal successors, (5243), 1949 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:45,983 INFO L93 Difference]: Finished difference Result 1597 states and 3252 transitions. [2022-11-21 16:27:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:27:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-21 16:27:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:46,022 INFO L225 Difference]: With dead ends: 1597 [2022-11-21 16:27:46,023 INFO L226 Difference]: Without dead ends: 1595 [2022-11-21 16:27:46,024 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 [2022-11-21 16:27:46,034 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:46,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:27:46,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2022-11-21 16:27:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1595. [2022-11-21 16:27:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1358 states have (on average 2.3924889543446244) internal successors, (3249), 1594 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 3249 transitions. [2022-11-21 16:27:46,190 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 3249 transitions. Word has length 3 [2022-11-21 16:27:46,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:46,190 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 3249 transitions. [2022-11-21 16:27:46,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 3249 transitions. [2022-11-21 16:27:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:27:46,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:46,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:27:46,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:27:46,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-21 16:27:46,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 35807126, now seen corresponding path program 1 times [2022-11-21 16:27:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613343375] [2022-11-21 16:27:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:46,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:46,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613343375] [2022-11-21 16:27:46,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613343375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:27:46,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629041132] [2022-11-21 16:27:46,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:46,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:27:46,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:27:46,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:27:46,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:27:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:46,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:27:46,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:27:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:46,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:27:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:46,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629041132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:27:46,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:27:46,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-21 16:27:46,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8491977] [2022-11-21 16:27:46,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:27:46,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:27:46,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:46,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:27:46,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:27:46,544 INFO L87 Difference]: Start difference. First operand 1595 states and 3249 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:46,934 INFO L93 Difference]: Finished difference Result 1598 states and 3252 transitions. [2022-11-21 16:27:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:27:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-21 16:27:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:46,947 INFO L225 Difference]: With dead ends: 1598 [2022-11-21 16:27:46,948 INFO L226 Difference]: Without dead ends: 1598 [2022-11-21 16:27:46,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:27:46,956 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:46,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:27:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-11-21 16:27:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2022-11-21 16:27:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1361 states have (on average 2.3894195444526085) internal successors, (3252), 1597 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 3252 transitions. [2022-11-21 16:27:47,025 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 3252 transitions. Word has length 4 [2022-11-21 16:27:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:47,026 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 3252 transitions. [2022-11-21 16:27:47,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 3252 transitions. [2022-11-21 16:27:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:27:47,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:47,027 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-21 16:27:47,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:27:47,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 16:27:47,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-21 16:27:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:47,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1597951035, now seen corresponding path program 2 times [2022-11-21 16:27:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:47,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928170290] [2022-11-21 16:27:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:47,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:27:47,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:47,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928170290] [2022-11-21 16:27:47,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928170290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:27:47,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:27:47,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:27:47,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232712101] [2022-11-21 16:27:47,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:27:47,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:27:47,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:47,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:27:47,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:27:47,373 INFO L87 Difference]: Start difference. First operand 1598 states and 3252 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) [2022-11-21 16:27:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:47,614 INFO L93 Difference]: Finished difference Result 1542 states and 3140 transitions. [2022-11-21 16:27:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:27:47,616 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 7 [2022-11-21 16:27:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:47,624 INFO L225 Difference]: With dead ends: 1542 [2022-11-21 16:27:47,624 INFO L226 Difference]: Without dead ends: 1542 [2022-11-21 16:27:47,625 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 [2022-11-21 16:27:47,628 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 86 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:47,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 15 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:27:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-11-21 16:27:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2022-11-21 16:27:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1327 states have (on average 2.3662396382818387) internal successors, (3140), 1541 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 3140 transitions. [2022-11-21 16:27:47,693 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 3140 transitions. Word has length 7 [2022-11-21 16:27:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:47,694 INFO L495 AbstractCegarLoop]: Abstraction has 1542 states and 3140 transitions. [2022-11-21 16:27:47,694 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) [2022-11-21 16:27:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 3140 transitions. [2022-11-21 16:27:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:27:47,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:47,697 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-21 16:27:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:27:47,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-21 16:27:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1597951037, now seen corresponding path program 1 times [2022-11-21 16:27:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:47,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923885210] [2022-11-21 16:27:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:47,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923885210] [2022-11-21 16:27:47,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923885210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:27:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323377561] [2022-11-21 16:27:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:47,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:27:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:27:47,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:27:47,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:27:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:48,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:27:48,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:27:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:48,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:27:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:48,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323377561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:27:48,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:27:48,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-21 16:27:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576918139] [2022-11-21 16:27:48,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:27:48,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:27:48,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:27:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:27:48,153 INFO L87 Difference]: Start difference. First operand 1542 states and 3140 transitions. Second operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:48,379 INFO L93 Difference]: Finished difference Result 1548 states and 3146 transitions. [2022-11-21 16:27:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:27:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 16:27:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:48,389 INFO L225 Difference]: With dead ends: 1548 [2022-11-21 16:27:48,389 INFO L226 Difference]: Without dead ends: 1548 [2022-11-21 16:27:48,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:27:48,391 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:48,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:27:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2022-11-21 16:27:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2022-11-21 16:27:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1333 states have (on average 2.3600900225056263) internal successors, (3146), 1547 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 3146 transitions. [2022-11-21 16:27:48,443 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 3146 transitions. Word has length 7 [2022-11-21 16:27:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:48,444 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 3146 transitions. [2022-11-21 16:27:48,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 3146 transitions. [2022-11-21 16:27:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:27:48,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:48,445 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1] [2022-11-21 16:27:48,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:27:48,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:27:48,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-21 16:27:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash 528842333, now seen corresponding path program 2 times [2022-11-21 16:27:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:48,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143181732] [2022-11-21 16:27:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:27:48,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:48,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143181732] [2022-11-21 16:27:48,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143181732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:27:48,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:27:48,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:27:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125861853] [2022-11-21 16:27:48,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:27:48,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:27:48,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:48,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:27:48,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:27:48,918 INFO L87 Difference]: Start difference. First operand 1548 states and 3146 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) [2022-11-21 16:27:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:49,164 INFO L93 Difference]: Finished difference Result 1502 states and 3096 transitions. [2022-11-21 16:27:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:27:49,165 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 13 [2022-11-21 16:27:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:49,176 INFO L225 Difference]: With dead ends: 1502 [2022-11-21 16:27:49,176 INFO L226 Difference]: Without dead ends: 1502 [2022-11-21 16:27:49,177 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 [2022-11-21 16:27:49,178 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:49,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 33 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:27:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-11-21 16:27:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1502. [2022-11-21 16:27:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1302 states have (on average 2.377880184331797) internal successors, (3096), 1501 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 3096 transitions. [2022-11-21 16:27:49,244 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 3096 transitions. Word has length 13 [2022-11-21 16:27:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:49,245 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 3096 transitions. [2022-11-21 16:27:49,245 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) [2022-11-21 16:27:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 3096 transitions. [2022-11-21 16:27:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 16:27:49,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:49,248 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-11-21 16:27:49,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:27:49,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-21 16:27:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 802719467, now seen corresponding path program 1 times [2022-11-21 16:27:49,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:49,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304797486] [2022-11-21 16:27:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:49,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:27:49,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:49,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304797486] [2022-11-21 16:27:49,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304797486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:27:49,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072829416] [2022-11-21 16:27:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:27:49,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:27:49,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:27:49,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:27:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:49,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:27:49,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:27:49,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 16:27:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:27:49,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:27:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:27:49,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072829416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:27:49,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:27:49,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-21 16:27:49,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149935495] [2022-11-21 16:27:49,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:27:49,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:27:49,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:49,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:27:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:27:49,827 INFO L87 Difference]: Start difference. First operand 1502 states and 3096 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:50,000 INFO L93 Difference]: Finished difference Result 122 states and 208 transitions. [2022-11-21 16:27:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:27:50,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 16 [2022-11-21 16:27:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:50,002 INFO L225 Difference]: With dead ends: 122 [2022-11-21 16:27:50,002 INFO L226 Difference]: Without dead ends: 122 [2022-11-21 16:27:50,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:27:50,003 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:50,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 45 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:27:50,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-21 16:27:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-21 16:27:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 112 states have (on average 1.8571428571428572) internal successors, (208), 121 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 208 transitions. [2022-11-21 16:27:50,009 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 208 transitions. Word has length 16 [2022-11-21 16:27:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:50,009 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 208 transitions. [2022-11-21 16:27:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 208 transitions. [2022-11-21 16:27:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:27:50,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:50,010 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-21 16:27:50,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:27:50,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:27:50,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2022-11-21 16:27:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:50,217 INFO L85 PathProgramCache]: Analyzing trace with hash -885499484, now seen corresponding path program 1 times [2022-11-21 16:27:50,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:50,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800297419] [2022-11-21 16:27:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:50,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:27:50,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:27:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:27:50,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:27:50,320 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:27:50,321 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2022-11-21 16:27:50,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2022-11-21 16:27:50,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2022-11-21 16:27:50,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2022-11-21 16:27:50,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2022-11-21 16:27:50,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2022-11-21 16:27:50,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2022-11-21 16:27:50,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2022-11-21 16:27:50,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2022-11-21 16:27:50,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2022-11-21 16:27:50,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2022-11-21 16:27:50,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (38 of 50 remaining) [2022-11-21 16:27:50,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2022-11-21 16:27:50,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2022-11-21 16:27:50,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2022-11-21 16:27:50,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2022-11-21 16:27:50,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2022-11-21 16:27:50,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2022-11-21 16:27:50,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2022-11-21 16:27:50,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2022-11-21 16:27:50,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (29 of 50 remaining) [2022-11-21 16:27:50,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2022-11-21 16:27:50,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2022-11-21 16:27:50,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2022-11-21 16:27:50,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2022-11-21 16:27:50,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2022-11-21 16:27:50,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2022-11-21 16:27:50,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2022-11-21 16:27:50,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2022-11-21 16:27:50,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2022-11-21 16:27:50,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2022-11-21 16:27:50,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2022-11-21 16:27:50,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2022-11-21 16:27:50,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2022-11-21 16:27:50,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2022-11-21 16:27:50,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2022-11-21 16:27:50,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2022-11-21 16:27:50,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2022-11-21 16:27:50,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2022-11-21 16:27:50,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2022-11-21 16:27:50,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2022-11-21 16:27:50,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2022-11-21 16:27:50,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2022-11-21 16:27:50,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2022-11-21 16:27:50,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2022-11-21 16:27:50,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2022-11-21 16:27:50,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2022-11-21 16:27:50,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2022-11-21 16:27:50,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2022-11-21 16:27:50,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2022-11-21 16:27:50,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:27:50,352 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-11-21 16:27:50,355 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:27:50,355 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 16:27:50,419 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:27:50,425 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 16:27:50,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 376 transitions, 770 flow [2022-11-21 16:27:50,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 376 transitions, 770 flow [2022-11-21 16:27:50,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 376 transitions, 770 flow [2022-11-21 16:27:50,658 INFO L130 PetriNetUnfolder]: 118/738 cut-off events. [2022-11-21 16:27:50,658 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 16:27:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 738 events. 118/738 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4232 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 461. Up to 12 conditions per place. [2022-11-21 16:27:50,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 70632 [2022-11-21 16:28:00,031 INFO L134 LiptonReduction]: Checked pairs total: 147743 [2022-11-21 16:28:00,032 INFO L136 LiptonReduction]: Total number of compositions: 366 [2022-11-21 16:28:00,033 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 179 transitions, 376 flow [2022-11-21 16:28:02,522 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57747 states, 53016 states have (on average 4.450411196619888) internal successors, (235943), 57746 states have internal predecessors, (235943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:02,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:28:02,533 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;@3a814e49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:28:02,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-21 16:28:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 57747 states, 53016 states have (on average 4.450411196619888) internal successors, (235943), 57746 states have internal predecessors, (235943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:28:02,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:02,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:28:02,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:02,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1972118, now seen corresponding path program 1 times [2022-11-21 16:28:02,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:02,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726504247] [2022-11-21 16:28:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:02,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:02,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:02,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726504247] [2022-11-21 16:28:02,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726504247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:02,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:02,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:28:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879567843] [2022-11-21 16:28:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:02,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:28:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:28:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:28:03,025 INFO L87 Difference]: Start difference. First operand has 57747 states, 53016 states have (on average 4.450411196619888) internal successors, (235943), 57746 states have internal predecessors, (235943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:04,358 INFO L93 Difference]: Finished difference Result 44150 states and 135294 transitions. [2022-11-21 16:28:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:28:04,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-21 16:28:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:04,854 INFO L225 Difference]: With dead ends: 44150 [2022-11-21 16:28:04,854 INFO L226 Difference]: Without dead ends: 44146 [2022-11-21 16:28:04,854 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 [2022-11-21 16:28:04,855 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:04,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:28:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44146 states. [2022-11-21 16:28:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44146 to 44146. [2022-11-21 16:28:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44146 states, 41691 states have (on average 3.244968938140126) internal successors, (135286), 44145 states have internal predecessors, (135286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44146 states to 44146 states and 135286 transitions. [2022-11-21 16:28:07,372 INFO L78 Accepts]: Start accepts. Automaton has 44146 states and 135286 transitions. Word has length 3 [2022-11-21 16:28:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:07,373 INFO L495 AbstractCegarLoop]: Abstraction has 44146 states and 135286 transitions. [2022-11-21 16:28:07,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 44146 states and 135286 transitions. [2022-11-21 16:28:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:28:07,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:07,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:28:07,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:28:07,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash 61157225, now seen corresponding path program 1 times [2022-11-21 16:28:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:07,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112922852] [2022-11-21 16:28:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:07,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:07,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:07,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112922852] [2022-11-21 16:28:07,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112922852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:28:07,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898777026] [2022-11-21 16:28:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:07,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:28:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:28:07,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:28:07,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:28:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:07,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:28:07,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:28:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:07,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:28:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898777026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:28:07,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:28:07,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-21 16:28:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56505960] [2022-11-21 16:28:07,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:28:07,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:28:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:28:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:28:07,745 INFO L87 Difference]: Start difference. First operand 44146 states and 135286 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-11-21 16:28:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:08,406 INFO L93 Difference]: Finished difference Result 44149 states and 135289 transitions. [2022-11-21 16:28:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:28:08,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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 4 [2022-11-21 16:28:08,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:08,704 INFO L225 Difference]: With dead ends: 44149 [2022-11-21 16:28:08,704 INFO L226 Difference]: Without dead ends: 44149 [2022-11-21 16:28:08,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:28:08,706 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:08,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:28:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44149 states. [2022-11-21 16:28:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44149 to 44149. [2022-11-21 16:28:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44149 states, 41694 states have (on average 3.24480740634144) internal successors, (135289), 44148 states have internal predecessors, (135289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44149 states to 44149 states and 135289 transitions. [2022-11-21 16:28:11,012 INFO L78 Accepts]: Start accepts. Automaton has 44149 states and 135289 transitions. Word has length 4 [2022-11-21 16:28:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:11,012 INFO L495 AbstractCegarLoop]: Abstraction has 44149 states and 135289 transitions. [2022-11-21 16:28:11,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-11-21 16:28:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 44149 states and 135289 transitions. [2022-11-21 16:28:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:28:11,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:11,013 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-21 16:28:11,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:28:11,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 16:28:11,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash 890172502, now seen corresponding path program 2 times [2022-11-21 16:28:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725789637] [2022-11-21 16:28:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:28:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725789637] [2022-11-21 16:28:11,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725789637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:11,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:11,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:28:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441677410] [2022-11-21 16:28:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:11,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:28:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:28:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:28:11,283 INFO L87 Difference]: Start difference. First operand 44149 states and 135289 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) [2022-11-21 16:28:12,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:12,213 INFO L93 Difference]: Finished difference Result 42608 states and 130640 transitions. [2022-11-21 16:28:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:28:12,214 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 7 [2022-11-21 16:28:12,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:12,572 INFO L225 Difference]: With dead ends: 42608 [2022-11-21 16:28:12,572 INFO L226 Difference]: Without dead ends: 42608 [2022-11-21 16:28:12,573 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 [2022-11-21 16:28:12,575 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 118 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:12,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 27 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:28:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42608 states. [2022-11-21 16:28:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42608 to 42608. [2022-11-21 16:28:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42608 states, 40385 states have (on average 3.2348644298625726) internal successors, (130640), 42607 states have internal predecessors, (130640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42608 states to 42608 states and 130640 transitions. [2022-11-21 16:28:14,312 INFO L78 Accepts]: Start accepts. Automaton has 42608 states and 130640 transitions. Word has length 7 [2022-11-21 16:28:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:14,312 INFO L495 AbstractCegarLoop]: Abstraction has 42608 states and 130640 transitions. [2022-11-21 16:28:14,312 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) [2022-11-21 16:28:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 42608 states and 130640 transitions. [2022-11-21 16:28:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:28:14,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:14,313 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-21 16:28:14,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:28:14,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 890172504, now seen corresponding path program 1 times [2022-11-21 16:28:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:14,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926987508] [2022-11-21 16:28:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:14,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:14,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926987508] [2022-11-21 16:28:14,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926987508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:28:14,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199365254] [2022-11-21 16:28:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:14,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:28:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:28:14,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:28:14,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:28:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:14,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:28:14,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:28:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:14,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:28:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:14,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199365254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:28:14,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:28:14,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-21 16:28:14,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389934750] [2022-11-21 16:28:14,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:28:14,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:28:14,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:28:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:28:14,613 INFO L87 Difference]: Start difference. First operand 42608 states and 130640 transitions. Second operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:15,278 INFO L93 Difference]: Finished difference Result 42614 states and 130646 transitions. [2022-11-21 16:28:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:28:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 16:28:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:15,499 INFO L225 Difference]: With dead ends: 42614 [2022-11-21 16:28:15,499 INFO L226 Difference]: Without dead ends: 42614 [2022-11-21 16:28:15,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:28:15,500 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:15,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:28:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42614 states. [2022-11-21 16:28:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42614 to 42614. [2022-11-21 16:28:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42614 states, 40391 states have (on average 3.2345324453467357) internal successors, (130646), 42613 states have internal predecessors, (130646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42614 states to 42614 states and 130646 transitions. [2022-11-21 16:28:17,647 INFO L78 Accepts]: Start accepts. Automaton has 42614 states and 130646 transitions. Word has length 7 [2022-11-21 16:28:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:17,648 INFO L495 AbstractCegarLoop]: Abstraction has 42614 states and 130646 transitions. [2022-11-21 16:28:17,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 42614 states and 130646 transitions. [2022-11-21 16:28:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:28:17,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:17,649 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1] [2022-11-21 16:28:17,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:28:17,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:28:17,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1974864760, now seen corresponding path program 2 times [2022-11-21 16:28:17,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:17,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696296661] [2022-11-21 16:28:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:17,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:17,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:17,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696296661] [2022-11-21 16:28:17,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696296661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:17,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:17,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:28:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799284483] [2022-11-21 16:28:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:28:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:28:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:28:17,981 INFO L87 Difference]: Start difference. First operand 42614 states and 130646 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) [2022-11-21 16:28:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:18,447 INFO L93 Difference]: Finished difference Result 42568 states and 130596 transitions. [2022-11-21 16:28:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:28:18,448 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 13 [2022-11-21 16:28:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:18,613 INFO L225 Difference]: With dead ends: 42568 [2022-11-21 16:28:18,613 INFO L226 Difference]: Without dead ends: 42568 [2022-11-21 16:28:18,613 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 [2022-11-21 16:28:18,614 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:18,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 48 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:28:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42568 states. [2022-11-21 16:28:20,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42568 to 42568. [2022-11-21 16:28:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42568 states, 40360 states have (on average 3.2357779980178396) internal successors, (130596), 42567 states have internal predecessors, (130596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42568 states to 42568 states and 130596 transitions. [2022-11-21 16:28:20,532 INFO L78 Accepts]: Start accepts. Automaton has 42568 states and 130596 transitions. Word has length 13 [2022-11-21 16:28:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:20,532 INFO L495 AbstractCegarLoop]: Abstraction has 42568 states and 130596 transitions. [2022-11-21 16:28:20,533 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) [2022-11-21 16:28:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 42568 states and 130596 transitions. [2022-11-21 16:28:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:28:20,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:20,534 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:20,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:28:20,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1328326506, now seen corresponding path program 1 times [2022-11-21 16:28:20,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:20,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273418317] [2022-11-21 16:28:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:20,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:20,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273418317] [2022-11-21 16:28:20,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273418317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:28:20,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384772256] [2022-11-21 16:28:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:20,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:28:20,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:28:20,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:28:20,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:28:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:20,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:28:20,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:28:20,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 16:28:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:20,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:28:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:21,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384772256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:28:21,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:28:21,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-21 16:28:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096059661] [2022-11-21 16:28:21,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:28:21,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:28:21,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:21,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:28:21,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:28:21,011 INFO L87 Difference]: Start difference. First operand 42568 states and 130596 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:21,353 INFO L93 Difference]: Finished difference Result 3767 states and 10711 transitions. [2022-11-21 16:28:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:28:21,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 16:28:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:21,366 INFO L225 Difference]: With dead ends: 3767 [2022-11-21 16:28:21,366 INFO L226 Difference]: Without dead ends: 3767 [2022-11-21 16:28:21,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:28:21,367 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 407 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:21,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 79 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:28:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2022-11-21 16:28:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3767. [2022-11-21 16:28:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3667 states have (on average 2.920916280338151) internal successors, (10711), 3766 states have internal predecessors, (10711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 10711 transitions. [2022-11-21 16:28:21,485 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 10711 transitions. Word has length 17 [2022-11-21 16:28:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:21,485 INFO L495 AbstractCegarLoop]: Abstraction has 3767 states and 10711 transitions. [2022-11-21 16:28:21,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 10711 transitions. [2022-11-21 16:28:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:28:21,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:21,487 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:21,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:28:21,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 16:28:21,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1754884436, now seen corresponding path program 1 times [2022-11-21 16:28:21,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:21,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19512081] [2022-11-21 16:28:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:21,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19512081] [2022-11-21 16:28:22,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19512081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:22,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:22,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:28:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679642282] [2022-11-21 16:28:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:28:22,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:22,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:28:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:28:22,498 INFO L87 Difference]: Start difference. First operand 3767 states and 10711 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:22,936 INFO L93 Difference]: Finished difference Result 7103 states and 20234 transitions. [2022-11-21 16:28:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:28:22,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-21 16:28:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:22,955 INFO L225 Difference]: With dead ends: 7103 [2022-11-21 16:28:22,955 INFO L226 Difference]: Without dead ends: 7103 [2022-11-21 16:28:22,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:28:22,956 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 403 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:22,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 54 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:28:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7103 states. [2022-11-21 16:28:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7103 to 5018. [2022-11-21 16:28:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 4918 states have (on average 2.978243188287922) internal successors, (14647), 5017 states have internal predecessors, (14647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 14647 transitions. [2022-11-21 16:28:23,100 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 14647 transitions. Word has length 18 [2022-11-21 16:28:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:23,101 INFO L495 AbstractCegarLoop]: Abstraction has 5018 states and 14647 transitions. [2022-11-21 16:28:23,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 14647 transitions. [2022-11-21 16:28:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 16:28:23,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:23,102 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:23,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:28:23,103 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1433154964, now seen corresponding path program 1 times [2022-11-21 16:28:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:23,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095793118] [2022-11-21 16:28:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:23,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:23,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095793118] [2022-11-21 16:28:23,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095793118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:23,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:23,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:28:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210628186] [2022-11-21 16:28:23,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:23,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:28:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:23,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:28:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:28:23,341 INFO L87 Difference]: Start difference. First operand 5018 states and 14647 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:23,709 INFO L93 Difference]: Finished difference Result 9848 states and 29059 transitions. [2022-11-21 16:28:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:28:23,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 16:28:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:23,736 INFO L225 Difference]: With dead ends: 9848 [2022-11-21 16:28:23,736 INFO L226 Difference]: Without dead ends: 9848 [2022-11-21 16:28:23,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:28:23,737 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 236 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:23,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 48 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:28:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9848 states. [2022-11-21 16:28:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9848 to 6377. [2022-11-21 16:28:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6377 states, 6277 states have (on average 3.0938346343794807) internal successors, (19420), 6376 states have internal predecessors, (19420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6377 states to 6377 states and 19420 transitions. [2022-11-21 16:28:23,967 INFO L78 Accepts]: Start accepts. Automaton has 6377 states and 19420 transitions. Word has length 19 [2022-11-21 16:28:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:23,967 INFO L495 AbstractCegarLoop]: Abstraction has 6377 states and 19420 transitions. [2022-11-21 16:28:23,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6377 states and 19420 transitions. [2022-11-21 16:28:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 16:28:23,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:23,969 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:23,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:28:23,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1433154490, now seen corresponding path program 1 times [2022-11-21 16:28:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:23,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931928524] [2022-11-21 16:28:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:24,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931928524] [2022-11-21 16:28:24,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931928524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:24,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:24,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:28:24,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830322462] [2022-11-21 16:28:24,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:24,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:28:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:28:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:28:24,153 INFO L87 Difference]: Start difference. First operand 6377 states and 19420 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:24,343 INFO L93 Difference]: Finished difference Result 5682 states and 17002 transitions. [2022-11-21 16:28:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:28:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 16:28:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:24,362 INFO L225 Difference]: With dead ends: 5682 [2022-11-21 16:28:24,363 INFO L226 Difference]: Without dead ends: 5682 [2022-11-21 16:28:24,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:28:24,364 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 222 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:24,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 22 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:28:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2022-11-21 16:28:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 5682. [2022-11-21 16:28:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5682 states, 5632 states have (on average 3.018821022727273) internal successors, (17002), 5681 states have internal predecessors, (17002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5682 states to 5682 states and 17002 transitions. [2022-11-21 16:28:24,514 INFO L78 Accepts]: Start accepts. Automaton has 5682 states and 17002 transitions. Word has length 19 [2022-11-21 16:28:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:24,515 INFO L495 AbstractCegarLoop]: Abstraction has 5682 states and 17002 transitions. [2022-11-21 16:28:24,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5682 states and 17002 transitions. [2022-11-21 16:28:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:28:24,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:24,517 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:24,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:28:24,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:24,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1732285877, now seen corresponding path program 1 times [2022-11-21 16:28:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:24,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434914672] [2022-11-21 16:28:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:24,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:24,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434914672] [2022-11-21 16:28:24,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434914672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:28:24,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607580367] [2022-11-21 16:28:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:24,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:28:24,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:28:24,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:28:24,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:28:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:25,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 16:28:25,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:28:25,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-21 16:28:25,219 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:28:25,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:28:25,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-21 16:28:25,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-21 16:28:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-21 16:28:25,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:28:35,401 WARN L837 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_419 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_419) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0)) is different from false [2022-11-21 16:28:35,424 WARN L837 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_419 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_419) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0)) is different from false [2022-11-21 16:28:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2022-11-21 16:28:35,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607580367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:28:35,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:28:35,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-11-21 16:28:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305619158] [2022-11-21 16:28:35,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:28:35,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:28:35,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:28:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=79, Unknown=6, NotChecked=38, Total=156 [2022-11-21 16:28:35,572 INFO L87 Difference]: Start difference. First operand 5682 states and 17002 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2022-11-21 16:28:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:38,161 INFO L93 Difference]: Finished difference Result 7233 states and 21108 transitions. [2022-11-21 16:28:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:28:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 22 [2022-11-21 16:28:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:38,187 INFO L225 Difference]: With dead ends: 7233 [2022-11-21 16:28:38,187 INFO L226 Difference]: Without dead ends: 7233 [2022-11-21 16:28:38,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=51, Invalid=106, Unknown=7, NotChecked=46, Total=210 [2022-11-21 16:28:38,188 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 268 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:38,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 106 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 443 Invalid, 0 Unknown, 177 Unchecked, 0.4s Time] [2022-11-21 16:28:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7233 states. [2022-11-21 16:28:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7233 to 5227. [2022-11-21 16:28:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5177 states have (on average 2.9636855321614837) internal successors, (15343), 5226 states have internal predecessors, (15343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 15343 transitions. [2022-11-21 16:28:38,337 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 15343 transitions. Word has length 22 [2022-11-21 16:28:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:38,337 INFO L495 AbstractCegarLoop]: Abstraction has 5227 states and 15343 transitions. [2022-11-21 16:28:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2022-11-21 16:28:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 15343 transitions. [2022-11-21 16:28:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:28:38,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:38,339 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-21 16:28:38,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:28:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbf681-9fa5-4513-b30d-cfef2b0d47a3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:28:38,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-21 16:28:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1390243518, now seen corresponding path program 1 times [2022-11-21 16:28:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:38,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590779798] [2022-11-21 16:28:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:38,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:28:38,569 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:28:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:28:38,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:28:38,596 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:28:38,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2022-11-21 16:28:38,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2022-11-21 16:28:38,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2022-11-21 16:28:38,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2022-11-21 16:28:38,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2022-11-21 16:28:38,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 61 remaining) [2022-11-21 16:28:38,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2022-11-21 16:28:38,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2022-11-21 16:28:38,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 61 remaining) [2022-11-21 16:28:38,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2022-11-21 16:28:38,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2022-11-21 16:28:38,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (49 of 61 remaining) [2022-11-21 16:28:38,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2022-11-21 16:28:38,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2022-11-21 16:28:38,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2022-11-21 16:28:38,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 61 remaining) [2022-11-21 16:28:38,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 61 remaining) [2022-11-21 16:28:38,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2022-11-21 16:28:38,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2022-11-21 16:28:38,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2022-11-21 16:28:38,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (40 of 61 remaining) [2022-11-21 16:28:38,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2022-11-21 16:28:38,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2022-11-21 16:28:38,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 61 remaining) [2022-11-21 16:28:38,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 61 remaining) [2022-11-21 16:28:38,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 61 remaining) [2022-11-21 16:28:38,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 61 remaining) [2022-11-21 16:28:38,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (33 of 61 remaining) [2022-11-21 16:28:38,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 61 remaining) [2022-11-21 16:28:38,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 61 remaining) [2022-11-21 16:28:38,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 61 remaining) [2022-11-21 16:28:38,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 61 remaining) [2022-11-21 16:28:38,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2022-11-21 16:28:38,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2022-11-21 16:28:38,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2022-11-21 16:28:38,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2022-11-21 16:28:38,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2022-11-21 16:28:38,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2022-11-21 16:28:38,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (22 of 61 remaining) [2022-11-21 16:28:38,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2022-11-21 16:28:38,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2022-11-21 16:28:38,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2022-11-21 16:28:38,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2022-11-21 16:28:38,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2022-11-21 16:28:38,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2022-11-21 16:28:38,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2022-11-21 16:28:38,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 61 remaining) [2022-11-21 16:28:38,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2022-11-21 16:28:38,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2022-11-21 16:28:38,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 61 remaining) [2022-11-21 16:28:38,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2022-11-21 16:28:38,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2022-11-21 16:28:38,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 61 remaining) [2022-11-21 16:28:38,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 61 remaining) [2022-11-21 16:28:38,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 61 remaining) [2022-11-21 16:28:38,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 61 remaining) [2022-11-21 16:28:38,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 61 remaining) [2022-11-21 16:28:38,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 61 remaining) [2022-11-21 16:28:38,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 61 remaining) [2022-11-21 16:28:38,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 61 remaining) [2022-11-21 16:28:38,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 61 remaining) [2022-11-21 16:28:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:28:38,611 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:38,611 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:28:38,611 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 16:28:38,664 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:28:38,668 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 16:28:38,668 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 459 transitions, 948 flow [2022-11-21 16:28:38,668 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 459 transitions, 948 flow [2022-11-21 16:28:38,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 459 transitions, 948 flow [2022-11-21 16:28:38,930 INFO L130 PetriNetUnfolder]: 168/1060 cut-off events. [2022-11-21 16:28:38,930 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 16:28:38,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 1060 events. 168/1060 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6435 event pairs, 1 based on Foata normal form. 0/735 useless extension candidates. Maximal degree in co-relation 746. Up to 16 conditions per place. [2022-11-21 16:28:39,032 INFO L119 LiptonReduction]: Number of co-enabled transitions 126360 [2022-11-21 16:28:49,082 INFO L134 LiptonReduction]: Checked pairs total: 276804 [2022-11-21 16:28:49,083 INFO L136 LiptonReduction]: Total number of compositions: 437 [2022-11-21 16:28:49,084 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 164 places, 223 transitions, 476 flow