./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN --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 3241bc7a4fb5fce7b9ee4eb3820005fca7c10e90159ff3c3ee85c2790d085281 --- 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-6b4ec56 [2022-11-20 12:46:57,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:46:57,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:46:58,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:46:58,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:46:58,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:46:58,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:46:58,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:46:58,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:46:58,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:46:58,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:46:58,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:46:58,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:46:58,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:46:58,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:46:58,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:46:58,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:46:58,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:46:58,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:46:58,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:46:58,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:46:58,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:46:58,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:46:58,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:46:58,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:46:58,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:46:58,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:46:58,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:46:58,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:46:58,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:46:58,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:46:58,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:46:58,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:46:58,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:46:58,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:46:58,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:46:58,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:46:58,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:46:58,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:46:58,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:46:58,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:46:58,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:46:58,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:46:58,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:46:58,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:46:58,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:46:58,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:46:58,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:46:58,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:46:58,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:46:58,126 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:46:58,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:46:58,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:46:58,127 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:46:58,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:46:58,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:46:58,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:46:58,129 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:46:58,129 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:46:58,129 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:46:58,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:46:58,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:46:58,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:46:58,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:46:58,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:46:58,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:46:58,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:46:58,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:46:58,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:46:58,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:46:58,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:46:58,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:46:58,134 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_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3241bc7a4fb5fce7b9ee4eb3820005fca7c10e90159ff3c3ee85c2790d085281 [2022-11-20 12:46:58,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:46:58,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:46:58,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:46:58,468 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:46:58,469 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:46:58,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2022-11-20 12:47:02,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:47:02,356 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:47:02,356 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2022-11-20 12:47:02,368 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/data/ab8160a5b/cd1883063a5b4ba3851e9ac9957ec73d/FLAG8228d7406 [2022-11-20 12:47:02,407 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/data/ab8160a5b/cd1883063a5b4ba3851e9ac9957ec73d [2022-11-20 12:47:02,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:47:02,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:47:02,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:02,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:47:02,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:47:02,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2357e55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02, skipping insertion in model container [2022-11-20 12:47:02,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:47:02,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:47:02,737 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_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1849,1862] [2022-11-20 12:47:02,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:02,760 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:47:02,797 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_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1849,1862] [2022-11-20 12:47:02,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:02,824 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:47:02,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02 WrapperNode [2022-11-20 12:47:02,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:02,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:02,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:47:02,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:47:02,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,896 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-20 12:47:02,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:02,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:47:02,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:47:02,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:47:02,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,939 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:47:02,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:47:02,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:47:02,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:47:02,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (1/1) ... [2022-11-20 12:47:02,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:47:02,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:03,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:03,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:47:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:47:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:47:03,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:47:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:47:03,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:47:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:47:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:47:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:47:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:47:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:47:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:47:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:47:03,075 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:47:03,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:47:03,230 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:47:03,554 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:47:03,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:47:03,568 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:47:03,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:03 BoogieIcfgContainer [2022-11-20 12:47:03,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:47:03,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:47:03,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:47:03,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:47:03,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:47:02" (1/3) ... [2022-11-20 12:47:03,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269d59e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:03, skipping insertion in model container [2022-11-20 12:47:03,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:02" (2/3) ... [2022-11-20 12:47:03,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269d59e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:03, skipping insertion in model container [2022-11-20 12:47:03,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:03" (3/3) ... [2022-11-20 12:47:03,582 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2022-11-20 12:47:03,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:47:03,632 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 12:47:03,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:47:03,756 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:47:03,801 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 12:47:03,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 93 transitions, 202 flow [2022-11-20 12:47:03,825 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 93 transitions, 202 flow [2022-11-20 12:47:03,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 93 transitions, 202 flow [2022-11-20 12:47:03,900 INFO L130 PetriNetUnfolder]: 6/91 cut-off events. [2022-11-20 12:47:03,900 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:47:03,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 6/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-20 12:47:03,909 INFO L119 LiptonReduction]: Number of co-enabled transitions 348 [2022-11-20 12:47:08,135 INFO L134 LiptonReduction]: Checked pairs total: 477 [2022-11-20 12:47:08,136 INFO L136 LiptonReduction]: Total number of compositions: 94 [2022-11-20 12:47:08,146 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2022-11-20 12:47:08,164 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:08,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:47:08,192 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;@5686ea9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:47:08,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-20 12:47:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 12:47:08,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:08,202 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 12:47:08,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:08,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash 348, now seen corresponding path program 1 times [2022-11-20 12:47:08,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:08,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648207215] [2022-11-20 12:47:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:08,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:08,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648207215] [2022-11-20 12:47:08,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648207215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:08,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:08,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 12:47:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041047692] [2022-11-20 12:47:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:08,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:47:08,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:47:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:47:08,386 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:08,437 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2022-11-20 12:47:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:47:08,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 12:47:08,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:08,449 INFO L225 Difference]: With dead ends: 36 [2022-11-20 12:47:08,449 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 12:47:08,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:47:08,457 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:08,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 12:47:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 12:47:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2022-11-20 12:47:08,511 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2022-11-20 12:47:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:08,513 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2022-11-20 12:47:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2022-11-20 12:47:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:47:08,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:08,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:47:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:47:08,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 342536, now seen corresponding path program 1 times [2022-11-20 12:47:08,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:08,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599428776] [2022-11-20 12:47:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:08,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:08,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599428776] [2022-11-20 12:47:08,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599428776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:08,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:08,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:47:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141249987] [2022-11-20 12:47:08,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:47:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:47:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:47:08,690 INFO L87 Difference]: Start difference. First operand 36 states and 80 transitions. Second operand has 3 states, 2 states have (on average 1.5) 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) [2022-11-20 12:47:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:08,742 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2022-11-20 12:47:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:47:08,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2022-11-20 12:47:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:08,750 INFO L225 Difference]: With dead ends: 32 [2022-11-20 12:47:08,750 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 12:47:08,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:47:08,755 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:08,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 12:47:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 12:47:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2022-11-20 12:47:08,773 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2022-11-20 12:47:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:08,774 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2022-11-20 12:47:08,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2022-11-20 12:47:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2022-11-20 12:47:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:47:08,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:08,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:47:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:47:08,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash 342538, now seen corresponding path program 1 times [2022-11-20 12:47:08,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:08,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520918188] [2022-11-20 12:47:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:08,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:08,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520918188] [2022-11-20 12:47:08,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520918188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:08,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:08,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:47:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733161129] [2022-11-20 12:47:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:08,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:47:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:47:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:47:08,977 INFO L87 Difference]: Start difference. First operand 32 states and 72 transitions. Second operand has 3 states, 2 states have (on average 1.5) 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) [2022-11-20 12:47:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:09,006 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2022-11-20 12:47:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:47:09,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2022-11-20 12:47:09,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:09,007 INFO L225 Difference]: With dead ends: 28 [2022-11-20 12:47:09,007 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 12:47:09,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:47:09,009 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:09,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:09,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 12:47:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-20 12:47:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2022-11-20 12:47:09,015 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2022-11-20 12:47:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:09,016 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2022-11-20 12:47:09,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2022-11-20 12:47:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2022-11-20 12:47:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:47:09,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:09,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:47:09,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:47:09,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 329185253, now seen corresponding path program 1 times [2022-11-20 12:47:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:09,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238295069] [2022-11-20 12:47:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:09,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:09,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238295069] [2022-11-20 12:47:09,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238295069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:09,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:09,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:47:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064402538] [2022-11-20 12:47:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:47:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:47:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:09,189 INFO L87 Difference]: Start difference. First operand 28 states and 64 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:09,227 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2022-11-20 12:47:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:47:09,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:47:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:09,231 INFO L225 Difference]: With dead ends: 24 [2022-11-20 12:47:09,231 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 12:47:09,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:09,234 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:09,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 12:47:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 12:47:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2022-11-20 12:47:09,247 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2022-11-20 12:47:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:09,249 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2022-11-20 12:47:09,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2022-11-20 12:47:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:47:09,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:09,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:47:09,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:47:09,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash 329185254, now seen corresponding path program 1 times [2022-11-20 12:47:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:09,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063820122] [2022-11-20 12:47:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:09,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:09,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:09,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063820122] [2022-11-20 12:47:09,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063820122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:09,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:09,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:47:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526774014] [2022-11-20 12:47:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:09,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:47:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:47:09,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:09,452 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:09,490 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2022-11-20 12:47:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:47:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:47:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:09,495 INFO L225 Difference]: With dead ends: 20 [2022-11-20 12:47:09,495 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 12:47:09,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:09,500 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:09,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 12:47:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 12:47:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2022-11-20 12:47:09,512 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2022-11-20 12:47:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:09,512 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2022-11-20 12:47:09,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,513 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2022-11-20 12:47:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:47:09,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:09,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:09,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:47:09,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash -223186105, now seen corresponding path program 1 times [2022-11-20 12:47:09,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:09,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64016128] [2022-11-20 12:47:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:09,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:09,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64016128] [2022-11-20 12:47:09,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64016128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:09,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:09,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:47:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948722927] [2022-11-20 12:47:09,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:09,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:47:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:47:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:47:09,701 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:09,748 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2022-11-20 12:47:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:47:09,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 12:47:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:09,751 INFO L225 Difference]: With dead ends: 37 [2022-11-20 12:47:09,751 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 12:47:09,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:47:09,752 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:09,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 12:47:09,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 12:47:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2022-11-20 12:47:09,758 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2022-11-20 12:47:09,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:09,759 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2022-11-20 12:47:09,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2022-11-20 12:47:09,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:47:09,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:09,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:47:09,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash 323247030, now seen corresponding path program 1 times [2022-11-20 12:47:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:09,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404990141] [2022-11-20 12:47:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404990141] [2022-11-20 12:47:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404990141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887407714] [2022-11-20 12:47:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:09,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:09,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:09,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:09,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:47:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:09,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:47:09,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:10,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:10,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887407714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:10,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:10,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-20 12:47:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112502727] [2022-11-20 12:47:10,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:10,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:10,417 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:10,565 INFO L93 Difference]: Finished difference Result 46 states and 91 transitions. [2022-11-20 12:47:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:47:10,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:47:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:10,567 INFO L225 Difference]: With dead ends: 46 [2022-11-20 12:47:10,567 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 12:47:10,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:47:10,568 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:10,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:47:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 12:47:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2022-11-20 12:47:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2022-11-20 12:47:10,572 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 12 [2022-11-20 12:47:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:10,572 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2022-11-20 12:47:10,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2022-11-20 12:47:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:47:10,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:10,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:10,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:47:10,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:47:10,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash 105245017, now seen corresponding path program 1 times [2022-11-20 12:47:10,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:10,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065410738] [2022-11-20 12:47:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:10,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:10,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065410738] [2022-11-20 12:47:10,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065410738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:10,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:10,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:47:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027476431] [2022-11-20 12:47:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:47:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:47:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:10,958 INFO L87 Difference]: Start difference. First operand 32 states and 72 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:11,042 INFO L93 Difference]: Finished difference Result 38 states and 75 transitions. [2022-11-20 12:47:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:47:11,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:47:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:11,043 INFO L225 Difference]: With dead ends: 38 [2022-11-20 12:47:11,043 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 12:47:11,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:47:11,044 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:11,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:47:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 12:47:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 12:47:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 63 transitions. [2022-11-20 12:47:11,048 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 63 transitions. Word has length 12 [2022-11-20 12:47:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:11,049 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 63 transitions. [2022-11-20 12:47:11,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 63 transitions. [2022-11-20 12:47:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:47:11,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:11,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:11,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:47:11,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash 668356827, now seen corresponding path program 2 times [2022-11-20 12:47:11,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:11,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963553494] [2022-11-20 12:47:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:11,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:11,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963553494] [2022-11-20 12:47:11,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963553494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126051660] [2022-11-20 12:47:11,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:47:11,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:11,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:11,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:11,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:47:11,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:47:11,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:47:11,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:47:11,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:11,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:11,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126051660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:11,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:11,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-20 12:47:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546183242] [2022-11-20 12:47:11,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:11,615 INFO L87 Difference]: Start difference. First operand 30 states and 63 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:11,771 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2022-11-20 12:47:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:47:11,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:47:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:11,772 INFO L225 Difference]: With dead ends: 34 [2022-11-20 12:47:11,773 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 12:47:11,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:47:11,773 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:11,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:47:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 12:47:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-20 12:47:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2022-11-20 12:47:11,777 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 12 [2022-11-20 12:47:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:11,778 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2022-11-20 12:47:11,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2022-11-20 12:47:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:47:11,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:11,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:11,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:11,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:11,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash -135196982, now seen corresponding path program 1 times [2022-11-20 12:47:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:11,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075560509] [2022-11-20 12:47:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:14,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075560509] [2022-11-20 12:47:14,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075560509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:14,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427169274] [2022-11-20 12:47:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:14,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:14,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:14,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:47:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:15,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:47:15,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:47:15,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:15,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427169274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:15,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:47:15,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 12:47:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151354520] [2022-11-20 12:47:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:47:15,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:47:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2022-11-20 12:47:15,874 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:15,920 INFO L93 Difference]: Finished difference Result 24 states and 47 transitions. [2022-11-20 12:47:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:47:15,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 12:47:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:15,921 INFO L225 Difference]: With dead ends: 24 [2022-11-20 12:47:15,922 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 12:47:15,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2022-11-20 12:47:15,923 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:15,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 12:47:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 12:47:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 47 transitions. [2022-11-20 12:47:15,927 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 47 transitions. Word has length 13 [2022-11-20 12:47:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:15,928 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 47 transitions. [2022-11-20 12:47:15,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 47 transitions. [2022-11-20 12:47:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:47:15,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:15,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:15,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:16,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:47:16,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:47:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1831218134, now seen corresponding path program 2 times [2022-11-20 12:47:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948558612] [2022-11-20 12:47:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:16,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948558612] [2022-11-20 12:47:16,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948558612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186963760] [2022-11-20 12:47:16,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:47:16,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:16,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:16,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:16,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:47:17,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:47:17,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:47:17,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:47:17,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:27,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:30,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186963760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:30,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:30,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-11-20 12:47:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288220839] [2022-11-20 12:47:30,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:30,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:47:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:47:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=137, Unknown=2, NotChecked=0, Total=210 [2022-11-20 12:47:30,428 INFO L87 Difference]: Start difference. First operand 24 states and 47 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:34,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:36,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:38,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:40,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:42,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:45,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:49,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:51,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:05,388 WARN L233 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 52 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:48:14,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:16,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:16,216 INFO L93 Difference]: Finished difference Result 143 states and 281 transitions. [2022-11-20 12:48:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:48:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2022-11-20 12:48:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:16,219 INFO L225 Difference]: With dead ends: 143 [2022-11-20 12:48:16,219 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 12:48:16,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=160, Invalid=389, Unknown=3, NotChecked=0, Total=552 [2022-11-20 12:48:16,220 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 27 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:16,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 283 Invalid, 8 Unknown, 0 Unchecked, 27.6s Time] [2022-11-20 12:48:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 12:48:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 46. [2022-11-20 12:48:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 45 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 119 transitions. [2022-11-20 12:48:16,237 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 119 transitions. Word has length 13 [2022-11-20 12:48:16,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:16,237 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 119 transitions. [2022-11-20 12:48:16,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 119 transitions. [2022-11-20 12:48:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:48:16,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:16,241 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:16,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:48:16,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:48:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:16,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2008630597, now seen corresponding path program 3 times [2022-11-20 12:48:16,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:16,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826463393] [2022-11-20 12:48:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:16,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826463393] [2022-11-20 12:48:16,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826463393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:16,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471518711] [2022-11-20 12:48:16,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:48:16,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:16,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:16,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:16,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:48:17,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:48:17,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:17,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:48:17,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:23,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:48:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:23,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471518711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:48:23,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:48:23,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 12 [2022-11-20 12:48:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667748483] [2022-11-20 12:48:23,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:48:23,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:48:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:48:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=121, Unknown=2, NotChecked=0, Total=156 [2022-11-20 12:48:23,715 INFO L87 Difference]: Start difference. First operand 46 states and 119 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:27,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:29,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:29,868 INFO L93 Difference]: Finished difference Result 97 states and 223 transitions. [2022-11-20 12:48:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:48:29,869 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 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 14 [2022-11-20 12:48:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:29,870 INFO L225 Difference]: With dead ends: 97 [2022-11-20 12:48:29,870 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 12:48:29,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=38, Invalid=142, Unknown=2, NotChecked=0, Total=182 [2022-11-20 12:48:29,871 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:29,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 248 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 12:48:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 12:48:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 54. [2022-11-20 12:48:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 53 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 145 transitions. [2022-11-20 12:48:29,879 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 145 transitions. Word has length 14 [2022-11-20 12:48:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:29,879 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 145 transitions. [2022-11-20 12:48:29,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 145 transitions. [2022-11-20 12:48:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:48:29,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:29,881 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:29,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:30,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:48:30,088 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:48:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash 665707192, now seen corresponding path program 4 times [2022-11-20 12:48:30,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:30,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850056685] [2022-11-20 12:48:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:30,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:30,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:30,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850056685] [2022-11-20 12:48:30,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850056685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:30,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006848639] [2022-11-20 12:48:30,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:48:30,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:30,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:30,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:30,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:48:31,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:48:31,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:31,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:48:31,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:41,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:49:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:49:22,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006848639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:49:22,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:49:22,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 14 [2022-11-20 12:49:22,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884227102] [2022-11-20 12:49:22,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:49:22,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:49:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:49:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:49:22,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=149, Unknown=12, NotChecked=0, Total=210 [2022-11-20 12:49:22,803 INFO L87 Difference]: Start difference. First operand 54 states and 145 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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) [2022-11-20 12:49:24,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:41,842 WARN L233 SmtUtils]: Spent 17.29s on a formula simplification. DAG size of input: 53 DAG size of output: 9 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:43,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:45,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:47,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:49:58,292 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 57 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:50:05,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:07,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:22,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:29,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:31,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:33,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:35,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:37,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:39,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:41,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:43,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:45,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:47,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:49,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:52,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:08,293 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 44 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:10,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:12,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:23,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:28,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:31,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:33,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:37,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:39,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:41,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:45,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:47,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:49,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:51,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:53,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:55,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:57,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:00,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:07,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:12,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:20,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:24,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:26,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:30,531 INFO L93 Difference]: Finished difference Result 257 states and 533 transitions. [2022-11-20 12:52:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:52:30,532 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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 14 [2022-11-20 12:52:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:30,534 INFO L225 Difference]: With dead ends: 257 [2022-11-20 12:52:30,535 INFO L226 Difference]: Without dead ends: 239 [2022-11-20 12:52:30,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 122.7s TimeCoverageRelationStatistics Valid=233, Invalid=856, Unknown=33, NotChecked=0, Total=1122 [2022-11-20 12:52:30,536 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 29 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:30,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 580 Invalid, 31 Unknown, 0 Unchecked, 90.9s Time] [2022-11-20 12:52:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-20 12:52:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 81. [2022-11-20 12:52:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 3.0625) internal successors, (245), 80 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:52:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 245 transitions. [2022-11-20 12:52:30,548 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 245 transitions. Word has length 14 [2022-11-20 12:52:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:30,548 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 245 transitions. [2022-11-20 12:52:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 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) [2022-11-20 12:52:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 245 transitions. [2022-11-20 12:52:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:52:30,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:30,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:30,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:30,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:52:30,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 12:52:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:30,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1051801099, now seen corresponding path program 5 times [2022-11-20 12:52:30,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:52:30,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921851405] [2022-11-20 12:52:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:30,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:52:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:52:31,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:52:31,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921851405] [2022-11-20 12:52:31,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921851405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:52:31,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967721012] [2022-11-20 12:52:31,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:52:31,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:31,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:52:31,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:52:31,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:54:37,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-20 12:54:37,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:54:37,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:54:37,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:54:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:54:37,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:54:37,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967721012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:54:37,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:54:37,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 12:54:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418125003] [2022-11-20 12:54:37,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:54:37,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:54:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:54:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:54:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:54:37,268 INFO L87 Difference]: Start difference. First operand 81 states and 245 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:54:37,281 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2022-11-20 12:54:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:54:37,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 12:54:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:54:37,282 INFO L225 Difference]: With dead ends: 6 [2022-11-20 12:54:37,282 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:54:37,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:54:37,284 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:54:37,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:54:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:54:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:54:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:54:37,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-20 12:54:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:54:37,290 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:54:37,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:54:37,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:54:37,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-20 12:54:37,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-20 12:54:37,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-20 12:54:37,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-20 12:54:37,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-20 12:54:37,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-20 12:54:37,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-20 12:54:37,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-20 12:54:37,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-11-20 12:54:37,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-20 12:54:37,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-20 12:54:37,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-20 12:54:37,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:54:37,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:54:37,505 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:54:37,508 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:54:37,508 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:54:37,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:54:37 BasicIcfg [2022-11-20 12:54:37,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:54:37,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:54:37,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:54:37,512 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:54:37,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:03" (3/4) ... [2022-11-20 12:54:37,516 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:54:37,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:54:37,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:54:37,528 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 12:54:37,528 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:54:37,529 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:54:37,529 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:54:37,561 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:54:37,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:54:37,562 INFO L158 Benchmark]: Toolchain (without parser) took 455143.36ms. Allocated memory was 140.5MB in the beginning and 220.2MB in the end (delta: 79.7MB). Free memory was 99.2MB in the beginning and 179.5MB in the end (delta: -80.3MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2022-11-20 12:54:37,562 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:54:37,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.26ms. Allocated memory is still 140.5MB. Free memory was 98.9MB in the beginning and 88.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:54:37,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.89ms. Allocated memory is still 140.5MB. Free memory was 88.4MB in the beginning and 87.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:54:37,563 INFO L158 Benchmark]: Boogie Preprocessor took 57.40ms. Allocated memory is still 140.5MB. Free memory was 87.0MB in the beginning and 85.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:54:37,564 INFO L158 Benchmark]: RCFGBuilder took 614.55ms. Allocated memory is still 140.5MB. Free memory was 85.6MB in the beginning and 72.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:54:37,564 INFO L158 Benchmark]: TraceAbstraction took 453937.77ms. Allocated memory was 140.5MB in the beginning and 220.2MB in the end (delta: 79.7MB). Free memory was 72.0MB in the beginning and 182.4MB in the end (delta: -110.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:54:37,564 INFO L158 Benchmark]: Witness Printer took 50.07ms. Allocated memory is still 220.2MB. Free memory was 182.4MB in the beginning and 179.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:54:37,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.26ms. Allocated memory is still 140.5MB. Free memory was 98.9MB in the beginning and 88.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.89ms. Allocated memory is still 140.5MB. Free memory was 88.4MB in the beginning and 87.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.40ms. Allocated memory is still 140.5MB. Free memory was 87.0MB in the beginning and 85.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 614.55ms. Allocated memory is still 140.5MB. Free memory was 85.6MB in the beginning and 72.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 453937.77ms. Allocated memory was 140.5MB in the beginning and 220.2MB in the end (delta: 79.7MB). Free memory was 72.0MB in the beginning and 182.4MB in the end (delta: -110.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.07ms. Allocated memory is still 220.2MB. Free memory was 182.4MB in the beginning and 179.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 94 PlacesBefore, 30 PlacesAfterwards, 93 TransitionsBefore, 25 TransitionsAfterwards, 348 CoEnabledTransitionPairs, 7 FixpointIterations, 64 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 94 TotalNumberOfCompositions, 477 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 477, independent: 477, independent conditional: 0, independent unconditional: 477, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 226, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 226, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 477, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 226, unknown conditional: 0, unknown unconditional: 226] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 53]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 453.7s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 240.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 41 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 125.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 124.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1423 IncrementalHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 0 mSDtfsCounter, 1423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 116 SyntacticMatches, 11 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 161.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=13, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 282 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 129.0s SatisfiabilityAnalysisTime, 77.3s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 6370 SizeOfPredicates, 24 NumberOfNonLiveVariables, 860 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 18/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:54:37,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b3c4fac-632b-4ab0-bd65-d1d33bc7b183/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE