./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- 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 11:36:36,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:36:36,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:36:36,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:36:36,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:36:36,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:36:36,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:36:36,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:36:36,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:36:36,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:36:36,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:36:36,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:36:36,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:36:36,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:36:36,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:36:36,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:36:36,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:36:36,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:36:36,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:36:36,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:36:36,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:36:36,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:36:36,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:36:36,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:36:36,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:36:36,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:36:36,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:36:36,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:36:36,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:36:36,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:36:36,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:36:36,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:36:36,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:36:36,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:36:36,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:36:36,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:36:36,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:36:36,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:36:36,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:36:36,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:36:36,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:36:36,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:36:36,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:36:36,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:36:36,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:36:36,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:36:36,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:36:36,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:36:36,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:36:36,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:36:36,875 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:36:36,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:36:36,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:36:36,878 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:36:36,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:36:36,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:36:36,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:36:36,879 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:36:36,879 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:36:36,879 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:36:36,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:36:36,880 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:36:36,880 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:36:36,880 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:36:36,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:36:36,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:36:36,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:36:36,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:36:36,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:36:36,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:36:36,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:36:36,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:36:36,884 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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-11-20 11:36:37,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:36:37,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:36:37,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:36:37,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:36:37,287 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:36:37,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-20 11:36:40,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:36:41,123 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:36:41,132 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-20 11:36:41,148 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data/7b448c94a/441100ce4da1455a9840b3c4397e9d6e/FLAG4f2399ea6 [2022-11-20 11:36:41,162 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data/7b448c94a/441100ce4da1455a9840b3c4397e9d6e [2022-11-20 11:36:41,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:36:41,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:36:41,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:36:41,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:36:41,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:36:41,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:41,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afab7cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41, skipping insertion in model container [2022-11-20 11:36:41,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:41,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:36:41,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:36:41,802 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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-20 11:36:41,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:36:41,836 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:36:41,913 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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-20 11:36:41,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:36:41,990 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:36:41,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41 WrapperNode [2022-11-20 11:36:41,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:36:41,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:36:41,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:36:41,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:36:42,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,077 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-20 11:36:42,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:36:42,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:36:42,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:36:42,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:36:42,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:36:42,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:36:42,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:36:42,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:36:42,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (1/1) ... [2022-11-20 11:36:42,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:36:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:42,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:36:42,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:36:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:36:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:36:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:36:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:36:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:36:42,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:36:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:36:42,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:36:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:36:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:36:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:36:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:36:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:36:42,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:36:42,232 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 11:36:42,454 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:36:42,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:36:42,807 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:36:42,816 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:36:42,816 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:36:42,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:42 BoogieIcfgContainer [2022-11-20 11:36:42,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:36:42,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:36:42,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:36:42,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:36:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:41" (1/3) ... [2022-11-20 11:36:42,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d2606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:42, skipping insertion in model container [2022-11-20 11:36:42,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:41" (2/3) ... [2022-11-20 11:36:42,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d2606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:42, skipping insertion in model container [2022-11-20 11:36:42,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:42" (3/3) ... [2022-11-20 11:36:42,831 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-11-20 11:36:42,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:36:42,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 11:36:42,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:36:42,965 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:36:43,009 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:36:43,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 147 transitions, 310 flow [2022-11-20 11:36:43,027 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 147 transitions, 310 flow [2022-11-20 11:36:43,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 147 transitions, 310 flow [2022-11-20 11:36:43,137 INFO L130 PetriNetUnfolder]: 10/145 cut-off events. [2022-11-20 11:36:43,137 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:36:43,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 10/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 184 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2022-11-20 11:36:43,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2022-11-20 11:36:52,272 INFO L134 LiptonReduction]: Checked pairs total: 5290 [2022-11-20 11:36:52,272 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-11-20 11:36:52,281 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 42 transitions, 100 flow [2022-11-20 11:36:52,332 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 0 states have call successors, (0), 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 11:36:52,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:36:52,359 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;@4b640004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:36:52,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-20 11:36:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 0 states have call successors, (0), 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 11:36:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 11:36:52,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:52,369 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 11:36:52,370 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 11:36:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 565, now seen corresponding path program 1 times [2022-11-20 11:36:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:52,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092661284] [2022-11-20 11:36:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:52,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:52,497 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 11:36:52,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:52,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092661284] [2022-11-20 11:36:52,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092661284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:52,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:52,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 11:36:52,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999048796] [2022-11-20 11:36:52,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:52,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:36:52,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:36:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:36:52,534 INFO L87 Difference]: Start difference. First operand has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 0 states have call successors, (0), 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 11:36:52,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:52,648 INFO L93 Difference]: Finished difference Result 401 states and 1120 transitions. [2022-11-20 11:36:52,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:36:52,654 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 11:36:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:52,673 INFO L225 Difference]: With dead ends: 401 [2022-11-20 11:36:52,678 INFO L226 Difference]: Without dead ends: 401 [2022-11-20 11:36:52,679 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 11:36:52,685 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:52,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:52,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-20 11:36:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-11-20 11:36:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 393 states have (on average 2.849872773536896) internal successors, (1120), 400 states have internal predecessors, (1120), 0 states have call successors, (0), 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 11:36:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1120 transitions. [2022-11-20 11:36:52,793 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1120 transitions. Word has length 1 [2022-11-20 11:36:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:52,794 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 1120 transitions. [2022-11-20 11:36:52,794 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 11:36:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1120 transitions. [2022-11-20 11:36:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:36:52,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:52,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:36:52,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:36:52,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:36:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash 554562, now seen corresponding path program 1 times [2022-11-20 11:36:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:52,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494789414] [2022-11-20 11:36:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:53,082 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 11:36:53,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:53,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494789414] [2022-11-20 11:36:53,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494789414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:53,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:53,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:36:53,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435822685] [2022-11-20 11:36:53,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:36:53,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:36:53,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:36:53,086 INFO L87 Difference]: Start difference. First operand 401 states and 1120 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 11:36:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:53,134 INFO L93 Difference]: Finished difference Result 383 states and 1082 transitions. [2022-11-20 11:36:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:53,135 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 11:36:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:53,138 INFO L225 Difference]: With dead ends: 383 [2022-11-20 11:36:53,138 INFO L226 Difference]: Without dead ends: 383 [2022-11-20 11:36:53,139 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 11:36:53,140 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:53,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:36:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-20 11:36:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-11-20 11:36:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 377 states have (on average 2.870026525198939) internal successors, (1082), 382 states have internal predecessors, (1082), 0 states have call successors, (0), 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 11:36:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1082 transitions. [2022-11-20 11:36:53,156 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1082 transitions. Word has length 3 [2022-11-20 11:36:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:53,156 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 1082 transitions. [2022-11-20 11:36:53,157 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 11:36:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1082 transitions. [2022-11-20 11:36:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:36:53,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:53,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:36:53,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:36:53,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:36:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 554564, now seen corresponding path program 1 times [2022-11-20 11:36:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675271224] [2022-11-20 11:36:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:53,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:53,296 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 11:36:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:53,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675271224] [2022-11-20 11:36:53,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675271224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:53,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:53,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:36:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018943318] [2022-11-20 11:36:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:53,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:36:53,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:53,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:36:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:36:53,299 INFO L87 Difference]: Start difference. First operand 383 states and 1082 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 11:36:53,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:53,355 INFO L93 Difference]: Finished difference Result 365 states and 1044 transitions. [2022-11-20 11:36:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:53,356 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 11:36:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:53,363 INFO L225 Difference]: With dead ends: 365 [2022-11-20 11:36:53,363 INFO L226 Difference]: Without dead ends: 365 [2022-11-20 11:36:53,364 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 11:36:53,368 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:53,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:36:53,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-20 11:36:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-11-20 11:36:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 361 states have (on average 2.89196675900277) internal successors, (1044), 364 states have internal predecessors, (1044), 0 states have call successors, (0), 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 11:36:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 1044 transitions. [2022-11-20 11:36:53,392 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 1044 transitions. Word has length 3 [2022-11-20 11:36:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:53,392 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 1044 transitions. [2022-11-20 11:36:53,392 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 11:36:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 1044 transitions. [2022-11-20 11:36:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:36:53,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:53,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:36:53,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:36:53,394 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 11:36:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:53,395 INFO L85 PathProgramCache]: Analyzing trace with hash 532947510, now seen corresponding path program 1 times [2022-11-20 11:36:53,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:53,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822435056] [2022-11-20 11:36:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:53,579 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 11:36:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:53,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822435056] [2022-11-20 11:36:53,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822435056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:53,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:53,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:36:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594449771] [2022-11-20 11:36:53,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:53,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:36:53,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:36:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:36:53,582 INFO L87 Difference]: Start difference. First operand 365 states and 1044 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 11:36:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:53,636 INFO L93 Difference]: Finished difference Result 284 states and 783 transitions. [2022-11-20 11:36:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:53,636 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 11:36:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:53,638 INFO L225 Difference]: With dead ends: 284 [2022-11-20 11:36:53,639 INFO L226 Difference]: Without dead ends: 284 [2022-11-20 11:36:53,640 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 11:36:53,643 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:53,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:36:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-20 11:36:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-20 11:36:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 281 states have (on average 2.786476868327402) internal successors, (783), 283 states have internal predecessors, (783), 0 states have call successors, (0), 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 11:36:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 783 transitions. [2022-11-20 11:36:53,656 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 783 transitions. Word has length 5 [2022-11-20 11:36:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:53,657 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 783 transitions. [2022-11-20 11:36:53,658 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 11:36:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 783 transitions. [2022-11-20 11:36:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:36:53,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:53,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:36:53,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:36:53,659 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 11:36:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash 532947511, now seen corresponding path program 1 times [2022-11-20 11:36:53,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:53,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663220827] [2022-11-20 11:36:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:53,780 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 11:36:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:53,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663220827] [2022-11-20 11:36:53,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663220827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:53,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:53,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:36:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282688222] [2022-11-20 11:36:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:53,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:36:53,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:53,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:36:53,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:36:53,789 INFO L87 Difference]: Start difference. First operand 284 states and 783 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:36:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:53,834 INFO L93 Difference]: Finished difference Result 203 states and 522 transitions. [2022-11-20 11:36:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:36:53,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:53,843 INFO L225 Difference]: With dead ends: 203 [2022-11-20 11:36:53,843 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 11:36:53,844 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 11:36:53,845 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 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 11:36:53,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:36:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 11:36:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-20 11:36:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 2.5970149253731343) internal successors, (522), 202 states have internal predecessors, (522), 0 states have call successors, (0), 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 11:36:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 522 transitions. [2022-11-20 11:36:53,854 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 522 transitions. Word has length 5 [2022-11-20 11:36:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:53,855 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 522 transitions. [2022-11-20 11:36:53,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:36:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 522 transitions. [2022-11-20 11:36:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:36:53,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:53,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:53,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:36:53,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:36:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:53,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1360708155, now seen corresponding path program 1 times [2022-11-20 11:36:53,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:53,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091051875] [2022-11-20 11:36:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:53,986 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 11:36:53,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:53,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091051875] [2022-11-20 11:36:53,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091051875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:53,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:53,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:36:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054592962] [2022-11-20 11:36:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:53,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:36:53,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:36:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:36:53,990 INFO L87 Difference]: Start difference. First operand 203 states and 522 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:36:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:54,060 INFO L93 Difference]: Finished difference Result 343 states and 899 transitions. [2022-11-20 11:36:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:54,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:36:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:54,063 INFO L225 Difference]: With dead ends: 343 [2022-11-20 11:36:54,063 INFO L226 Difference]: Without dead ends: 343 [2022-11-20 11:36:54,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:36:54,064 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:54,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 22 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-20 11:36:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 223. [2022-11-20 11:36:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 2.5927601809954752) internal successors, (573), 222 states have internal predecessors, (573), 0 states have call successors, (0), 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 11:36:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 573 transitions. [2022-11-20 11:36:54,074 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 573 transitions. Word has length 13 [2022-11-20 11:36:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:54,074 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 573 transitions. [2022-11-20 11:36:54,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:36:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 573 transitions. [2022-11-20 11:36:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:36:54,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:54,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:54,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:36:54,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:36:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:54,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1289144917, now seen corresponding path program 1 times [2022-11-20 11:36:54,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:54,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524492326] [2022-11-20 11:36:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:54,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:54,158 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 11:36:54,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:54,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524492326] [2022-11-20 11:36:54,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524492326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:54,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049848209] [2022-11-20 11:36:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:54,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:54,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:54,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:54,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:36:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:54,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:36:54,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:36:54,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:36:54,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049848209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:54,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:36:54,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 11:36:54,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916978182] [2022-11-20 11:36:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:54,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:36:54,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:36:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:36:54,326 INFO L87 Difference]: Start difference. First operand 223 states and 573 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:54,391 INFO L93 Difference]: Finished difference Result 377 states and 987 transitions. [2022-11-20 11:36:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:36:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:54,394 INFO L225 Difference]: With dead ends: 377 [2022-11-20 11:36:54,394 INFO L226 Difference]: Without dead ends: 377 [2022-11-20 11:36:54,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:36:54,395 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:54,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-20 11:36:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 245. [2022-11-20 11:36:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 243 states have (on average 2.588477366255144) internal successors, (629), 244 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 629 transitions. [2022-11-20 11:36:54,420 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 629 transitions. Word has length 18 [2022-11-20 11:36:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:54,420 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 629 transitions. [2022-11-20 11:36:54,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 629 transitions. [2022-11-20 11:36:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:36:54,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:54,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:54,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:36:54,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:54,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:36:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash -588725545, now seen corresponding path program 1 times [2022-11-20 11:36:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:54,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959867218] [2022-11-20 11:36:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:36:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:54,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959867218] [2022-11-20 11:36:54,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959867218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:54,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811687852] [2022-11-20 11:36:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:54,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:54,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:54,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:54,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:36:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:54,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:36:54,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:36:54,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:36:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:36:54,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811687852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:36:54,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:36:54,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-20 11:36:54,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545364505] [2022-11-20 11:36:54,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:36:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:36:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:36:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:36:54,959 INFO L87 Difference]: Start difference. First operand 245 states and 629 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:55,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:55,095 INFO L93 Difference]: Finished difference Result 553 states and 1457 transitions. [2022-11-20 11:36:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:36:55,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 11:36:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:55,099 INFO L225 Difference]: With dead ends: 553 [2022-11-20 11:36:55,099 INFO L226 Difference]: Without dead ends: 553 [2022-11-20 11:36:55,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:36:55,102 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:55,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 48 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-20 11:36:55,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-11-20 11:36:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 551 states have (on average 2.644283121597096) internal successors, (1457), 552 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1457 transitions. [2022-11-20 11:36:55,123 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1457 transitions. Word has length 23 [2022-11-20 11:36:55,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:55,124 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 1457 transitions. [2022-11-20 11:36:55,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:55,124 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1457 transitions. [2022-11-20 11:36:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:36:55,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:55,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:55,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:55,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:55,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:36:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1745715561, now seen corresponding path program 2 times [2022-11-20 11:36:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:55,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575297953] [2022-11-20 11:36:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:55,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:36:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:55,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575297953] [2022-11-20 11:36:55,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575297953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:55,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731889728] [2022-11-20 11:36:55,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:36:55,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:55,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:55,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:55,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:36:55,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:36:55,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:36:55,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:36:55,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:36:56,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:36:56,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731889728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:56,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:36:56,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-20 11:36:56,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19905868] [2022-11-20 11:36:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:56,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:36:56,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:36:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:36:56,033 INFO L87 Difference]: Start difference. First operand 553 states and 1457 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 11:36:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:56,052 INFO L93 Difference]: Finished difference Result 1090 states and 2883 transitions. [2022-11-20 11:36:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:56,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 33 [2022-11-20 11:36:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:56,058 INFO L225 Difference]: With dead ends: 1090 [2022-11-20 11:36:56,059 INFO L226 Difference]: Without dead ends: 1090 [2022-11-20 11:36:56,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:36:56,060 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:56,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2022-11-20 11:36:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-11-20 11:36:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 882. [2022-11-20 11:36:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 880 states have (on average 2.6670454545454545) internal successors, (2347), 881 states have internal predecessors, (2347), 0 states have call successors, (0), 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 11:36:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2347 transitions. [2022-11-20 11:36:56,089 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2347 transitions. Word has length 33 [2022-11-20 11:36:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:56,089 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 2347 transitions. [2022-11-20 11:36:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 11:36:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2347 transitions. [2022-11-20 11:36:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:36:56,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:56,093 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:56,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:56,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:56,299 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 11:36:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1745715599, now seen corresponding path program 1 times [2022-11-20 11:36:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:56,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545705720] [2022-11-20 11:36:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:56,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:36:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545705720] [2022-11-20 11:36:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545705720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:56,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864432583] [2022-11-20 11:36:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:56,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:56,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:56,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:36:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:56,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:36:56,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:36:56,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:36:56,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864432583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:56,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:36:56,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-20 11:36:56,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300654105] [2022-11-20 11:36:56,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:56,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:36:56,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:56,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:36:56,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:36:56,587 INFO L87 Difference]: Start difference. First operand 882 states and 2347 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:56,822 INFO L93 Difference]: Finished difference Result 1353 states and 3613 transitions. [2022-11-20 11:36:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:36:56,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-20 11:36:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:56,831 INFO L225 Difference]: With dead ends: 1353 [2022-11-20 11:36:56,831 INFO L226 Difference]: Without dead ends: 1315 [2022-11-20 11:36:56,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:36:56,833 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 68 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:56,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 16 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:36:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-11-20 11:36:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1140. [2022-11-20 11:36:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 2.6898066783831283) internal successors, (3061), 1139 states have internal predecessors, (3061), 0 states have call successors, (0), 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 11:36:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 3061 transitions. [2022-11-20 11:36:56,896 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 3061 transitions. Word has length 33 [2022-11-20 11:36:56,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:56,897 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 3061 transitions. [2022-11-20 11:36:56,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 3061 transitions. [2022-11-20 11:36:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:36:56,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:56,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:56,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:57,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:36:57,110 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 11:36:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash 363316215, now seen corresponding path program 2 times [2022-11-20 11:36:57,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:57,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505799711] [2022-11-20 11:36:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:36:57,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:57,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505799711] [2022-11-20 11:36:57,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505799711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:57,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:57,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:36:57,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456708473] [2022-11-20 11:36:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:57,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:36:57,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:36:57,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:36:57,232 INFO L87 Difference]: Start difference. First operand 1140 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 11:36:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:57,298 INFO L93 Difference]: Finished difference Result 570 states and 1197 transitions. [2022-11-20 11:36:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:36:57,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 33 [2022-11-20 11:36:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:57,301 INFO L225 Difference]: With dead ends: 570 [2022-11-20 11:36:57,301 INFO L226 Difference]: Without dead ends: 570 [2022-11-20 11:36:57,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:36:57,302 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:57,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-11-20 11:36:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 500. [2022-11-20 11:36:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 498 states have (on average 2.110441767068273) internal successors, (1051), 499 states have internal predecessors, (1051), 0 states have call successors, (0), 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 11:36:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1051 transitions. [2022-11-20 11:36:57,317 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1051 transitions. Word has length 33 [2022-11-20 11:36:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:57,317 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 1051 transitions. [2022-11-20 11:36:57,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 11:36:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1051 transitions. [2022-11-20 11:36:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:36:57,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:57,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:57,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:36:57,320 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 11:36:57,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash -393028775, now seen corresponding path program 3 times [2022-11-20 11:36:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:57,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017011047] [2022-11-20 11:36:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:36:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:57,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017011047] [2022-11-20 11:36:57,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017011047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:57,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900274292] [2022-11-20 11:36:57,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:36:57,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:57,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:57,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:36:57,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 11:36:57,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:36:57,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:36:57,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:36:57,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:36:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:36:57,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900274292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:36:57,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:36:57,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-20 11:36:57,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759237366] [2022-11-20 11:36:57,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:36:57,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:36:57,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:57,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:36:57,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:36:57,664 INFO L87 Difference]: Start difference. First operand 500 states and 1051 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 11:36:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:57,766 INFO L93 Difference]: Finished difference Result 1040 states and 2119 transitions. [2022-11-20 11:36:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:36:57,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 33 [2022-11-20 11:36:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:57,771 INFO L225 Difference]: With dead ends: 1040 [2022-11-20 11:36:57,772 INFO L226 Difference]: Without dead ends: 1040 [2022-11-20 11:36:57,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:36:57,772 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:57,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 42 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-11-20 11:36:57,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1022. [2022-11-20 11:36:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1020 states have (on average 2.045098039215686) internal successors, (2086), 1021 states have internal predecessors, (2086), 0 states have call successors, (0), 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 11:36:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 2086 transitions. [2022-11-20 11:36:57,799 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 2086 transitions. Word has length 33 [2022-11-20 11:36:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:57,799 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 2086 transitions. [2022-11-20 11:36:57,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 11:36:57,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 2086 transitions. [2022-11-20 11:36:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:36:57,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:57,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:57,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:58,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:36:58,008 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 11:36:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1461419693, now seen corresponding path program 4 times [2022-11-20 11:36:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120037535] [2022-11-20 11:36:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:58,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:36:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:58,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120037535] [2022-11-20 11:36:58,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120037535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:58,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913817882] [2022-11-20 11:36:58,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:36:58,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:58,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:58,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:58,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:36:58,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:36:58,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:36:58,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:36:58,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:36:58,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:36:58,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913817882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:58,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:36:58,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-20 11:36:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238916357] [2022-11-20 11:36:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:58,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:36:58,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:36:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:36:58,514 INFO L87 Difference]: Start difference. First operand 1022 states and 2086 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 11:36:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:58,703 INFO L93 Difference]: Finished difference Result 1022 states and 2065 transitions. [2022-11-20 11:36:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:36:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 43 [2022-11-20 11:36:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:58,708 INFO L225 Difference]: With dead ends: 1022 [2022-11-20 11:36:58,708 INFO L226 Difference]: Without dead ends: 958 [2022-11-20 11:36:58,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:36:58,709 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 51 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:58,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 7 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:36:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-20 11:36:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 666. [2022-11-20 11:36:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 664 states have (on average 2.052710843373494) internal successors, (1363), 665 states have internal predecessors, (1363), 0 states have call successors, (0), 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 11:36:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1363 transitions. [2022-11-20 11:36:58,739 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1363 transitions. Word has length 43 [2022-11-20 11:36:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:58,739 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1363 transitions. [2022-11-20 11:36:58,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 11:36:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1363 transitions. [2022-11-20 11:36:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:36:58,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:58,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:58,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:58,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:36:58,949 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 11:36:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1172715623, now seen corresponding path program 5 times [2022-11-20 11:36:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:58,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747842922] [2022-11-20 11:36:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:36:59,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:36:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:36:59,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:36:59,112 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:36:59,113 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-20 11:36:59,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-20 11:36:59,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-20 11:36:59,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-20 11:36:59,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-20 11:36:59,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-20 11:36:59,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-20 11:36:59,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-20 11:36:59,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-20 11:36:59,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-20 11:36:59,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-20 11:36:59,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-20 11:36:59,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:36:59,120 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:59,125 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:36:59,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:36:59,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:36:59 BasicIcfg [2022-11-20 11:36:59,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:36:59,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:36:59,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:36:59,210 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:36:59,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:42" (3/4) ... [2022-11-20 11:36:59,213 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:36:59,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:36:59,214 INFO L158 Benchmark]: Toolchain (without parser) took 18048.24ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 143.7MB in the beginning and 129.7MB in the end (delta: 14.0MB). Peak memory consumption was 97.9MB. Max. memory is 16.1GB. [2022-11-20 11:36:59,214 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 117.4MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:36:59,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 824.73ms. Allocated memory is still 176.2MB. Free memory was 143.7MB in the beginning and 117.1MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 11:36:59,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.97ms. Allocated memory is still 176.2MB. Free memory was 117.1MB in the beginning and 114.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:36:59,215 INFO L158 Benchmark]: Boogie Preprocessor took 70.06ms. Allocated memory is still 176.2MB. Free memory was 114.8MB in the beginning and 112.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:36:59,216 INFO L158 Benchmark]: RCFGBuilder took 669.40ms. Allocated memory is still 176.2MB. Free memory was 112.9MB in the beginning and 95.4MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:36:59,216 INFO L158 Benchmark]: TraceAbstraction took 16387.58ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 94.7MB in the beginning and 129.7MB in the end (delta: -35.0MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2022-11-20 11:36:59,216 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 255.9MB. Free memory is still 129.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:36:59,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 117.4MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 824.73ms. Allocated memory is still 176.2MB. Free memory was 143.7MB in the beginning and 117.1MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.97ms. Allocated memory is still 176.2MB. Free memory was 117.1MB in the beginning and 114.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.06ms. Allocated memory is still 176.2MB. Free memory was 114.8MB in the beginning and 112.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 669.40ms. Allocated memory is still 176.2MB. Free memory was 112.9MB in the beginning and 95.4MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16387.58ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 94.7MB in the beginning and 129.7MB in the end (delta: -35.0MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 255.9MB. Free memory is still 129.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2s, 144 PlacesBefore, 44 PlacesAfterwards, 147 TransitionsBefore, 42 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 144 TotalNumberOfCompositions, 5290 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4081, independent: 3926, independent conditional: 0, independent unconditional: 3926, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1683, independent: 1648, independent conditional: 0, independent unconditional: 1648, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1683, independent: 1623, independent conditional: 0, independent unconditional: 1623, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4081, independent: 2278, independent conditional: 0, independent unconditional: 2278, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 1683, unknown conditional: 0, unknown unconditional: 1683] , Statistics on independence cache: Total cache size (in pairs): 299, Positive cache size: 281, Positive conditional cache size: 0, Positive unconditional cache size: 281, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, 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 - UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 919. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=9, t1={6:0}, t2={7:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=10, t1={6:0}, t2={7:0}, total=0] [L915] 0 \read(t1) VAL [\read(t1)=9, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=9, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={6:0}, t2={7:0}, total=1] [L916] 0 \read(t2) VAL [\read(t2)=10, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={6:0}, t2={7:0}, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=10, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 183 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 16.1s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 801 IncrementalHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 124 mSDtfsCounter, 801 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1140occurred in iteration=10, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 1015 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 472 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 464 ConstructedInterpolants, 32 QuantifiedInterpolants, 1626 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1740 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 215/232 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 11:36:59,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- 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 11:37:01,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:37:01,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:37:01,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:37:01,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:37:01,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:37:01,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:37:01,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:37:01,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:37:01,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:37:01,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:37:01,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:37:01,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:37:01,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:37:01,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:37:01,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:37:01,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:37:01,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:37:01,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:37:01,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:37:01,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:37:01,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:37:01,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:37:01,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:37:01,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:37:01,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:37:01,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:37:01,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:37:01,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:37:01,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:37:01,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:37:01,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:37:01,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:37:01,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:37:01,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:37:01,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:37:01,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:37:01,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:37:01,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:37:01,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:37:01,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:37:01,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:37:01,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:37:01,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:37:01,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:37:01,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:37:01,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:37:01,867 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:37:01,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:37:01,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:37:01,868 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:37:01,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:37:01,869 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:37:01,870 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:37:01,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:37:01,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:37:01,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:37:01,871 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:37:01,871 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:37:01,871 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:37:01,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:37:01,872 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:37:01,872 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:37:01,873 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:37:01,873 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:37:01,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:37:01,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:37:01,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:37:01,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:37:01,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:37:01,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:37:01,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:37:01,875 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:37:01,876 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:37:01,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:37:01,877 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-11-20 11:37:02,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:37:02,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:37:02,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:37:02,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:37:02,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:37:02,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-20 11:37:05,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:37:05,740 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:37:05,741 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-20 11:37:05,771 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data/bb0ec3785/067ae5078a7b499d85d14574e6040133/FLAGfafb9531d [2022-11-20 11:37:05,791 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/data/bb0ec3785/067ae5078a7b499d85d14574e6040133 [2022-11-20 11:37:05,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:37:05,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:37:05,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:37:05,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:37:05,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:37:05,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:05" (1/1) ... [2022-11-20 11:37:05,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1add6eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:05, skipping insertion in model container [2022-11-20 11:37:05,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:05" (1/1) ... [2022-11-20 11:37:05,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:37:05,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:37:06,456 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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-20 11:37:06,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:37:06,487 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:37:06,553 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_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-20 11:37:06,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:37:06,634 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:37:06,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06 WrapperNode [2022-11-20 11:37:06,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:37:06,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:37:06,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:37:06,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:37:06,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,715 INFO L138 Inliner]: procedures = 250, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2022-11-20 11:37:06,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:37:06,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:37:06,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:37:06,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:37:06,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:37:06,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:37:06,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:37:06,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:37:06,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (1/1) ... [2022-11-20 11:37:06,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:37:06,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:06,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:37:06,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:37:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:37:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:37:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:37:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:37:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:37:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 11:37:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:37:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 11:37:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:37:06,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:37:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:37:06,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:37:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:37:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:37:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:37:06,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:37:06,890 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 11:37:07,069 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:37:07,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:37:07,518 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:37:07,525 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:37:07,539 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:37:07,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:07 BoogieIcfgContainer [2022-11-20 11:37:07,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:37:07,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:37:07,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:37:07,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:37:07,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:37:05" (1/3) ... [2022-11-20 11:37:07,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a58c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:07, skipping insertion in model container [2022-11-20 11:37:07,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:06" (2/3) ... [2022-11-20 11:37:07,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a58c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:07, skipping insertion in model container [2022-11-20 11:37:07,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:07" (3/3) ... [2022-11-20 11:37:07,550 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-11-20 11:37:07,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:37:07,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 11:37:07,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:37:07,757 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:37:07,811 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:37:07,837 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 148 transitions, 312 flow [2022-11-20 11:37:07,848 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 148 transitions, 312 flow [2022-11-20 11:37:07,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 148 transitions, 312 flow [2022-11-20 11:37:07,961 INFO L130 PetriNetUnfolder]: 10/146 cut-off events. [2022-11-20 11:37:07,961 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:37:07,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 10/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 190 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 91. Up to 3 conditions per place. [2022-11-20 11:37:07,972 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2022-11-20 11:37:36,827 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 11:37:40,982 INFO L134 LiptonReduction]: Checked pairs total: 5394 [2022-11-20 11:37:40,983 INFO L136 LiptonReduction]: Total number of compositions: 143 [2022-11-20 11:37:40,990 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 42 transitions, 100 flow [2022-11-20 11:37:41,050 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 0 states have call successors, (0), 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 11:37:41,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:37:41,072 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;@5c0bff03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:37:41,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-20 11:37:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 0 states have call successors, (0), 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 11:37:41,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 11:37:41,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:41,082 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 11:37:41,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 566, now seen corresponding path program 1 times [2022-11-20 11:37:41,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:41,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838758800] [2022-11-20 11:37:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:41,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:41,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:41,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:41,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:37:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:41,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:37:41,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:41,222 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 11:37:41,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:41,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:41,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838758800] [2022-11-20 11:37:41,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838758800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:41,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:41,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 11:37:41,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571777595] [2022-11-20 11:37:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:41,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:37:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:37:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:37:41,266 INFO L87 Difference]: Start difference. First operand has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 0 states have call successors, (0), 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 11:37:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:41,477 INFO L93 Difference]: Finished difference Result 401 states and 1120 transitions. [2022-11-20 11:37:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:37:41,479 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 11:37:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:41,497 INFO L225 Difference]: With dead ends: 401 [2022-11-20 11:37:41,497 INFO L226 Difference]: Without dead ends: 401 [2022-11-20 11:37:41,498 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 11:37:41,501 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:41,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:37:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-20 11:37:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-11-20 11:37:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 393 states have (on average 2.849872773536896) internal successors, (1120), 400 states have internal predecessors, (1120), 0 states have call successors, (0), 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 11:37:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1120 transitions. [2022-11-20 11:37:41,607 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1120 transitions. Word has length 1 [2022-11-20 11:37:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:41,607 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 1120 transitions. [2022-11-20 11:37:41,608 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 11:37:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1120 transitions. [2022-11-20 11:37:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:37:41,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:41,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:37:41,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:41,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:41,820 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 11:37:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash 555527, now seen corresponding path program 1 times [2022-11-20 11:37:41,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:41,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799532317] [2022-11-20 11:37:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:41,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:41,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:41,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:41,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:37:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:41,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:37:41,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:42,015 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 11:37:42,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-20 11:37:42,030 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 11:37:42,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:42,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:42,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799532317] [2022-11-20 11:37:42,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799532317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:42,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:42,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:37:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946404605] [2022-11-20 11:37:42,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:42,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:42,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:42,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:42,035 INFO L87 Difference]: Start difference. First operand 401 states and 1120 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 11:37:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:42,156 INFO L93 Difference]: Finished difference Result 383 states and 1082 transitions. [2022-11-20 11:37:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:42,157 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 11:37:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:42,161 INFO L225 Difference]: With dead ends: 383 [2022-11-20 11:37:42,162 INFO L226 Difference]: Without dead ends: 383 [2022-11-20 11:37:42,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:42,163 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:42,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 7 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:37:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-20 11:37:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-11-20 11:37:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 377 states have (on average 2.870026525198939) internal successors, (1082), 382 states have internal predecessors, (1082), 0 states have call successors, (0), 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 11:37:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1082 transitions. [2022-11-20 11:37:42,191 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1082 transitions. Word has length 3 [2022-11-20 11:37:42,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:42,192 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 1082 transitions. [2022-11-20 11:37:42,192 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 11:37:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1082 transitions. [2022-11-20 11:37:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:37:42,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:42,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:37:42,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:42,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:42,405 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 11:37:42,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash 555528, now seen corresponding path program 1 times [2022-11-20 11:37:42,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:42,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412453291] [2022-11-20 11:37:42,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:42,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:42,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:37:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:42,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:37:42,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:42,554 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:37:42,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 11:37:42,589 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 11:37:42,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:42,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:42,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412453291] [2022-11-20 11:37:42,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412453291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:42,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:42,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:37:42,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789551595] [2022-11-20 11:37:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:42,593 INFO L87 Difference]: Start difference. First operand 383 states and 1082 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 11:37:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:42,714 INFO L93 Difference]: Finished difference Result 365 states and 1044 transitions. [2022-11-20 11:37:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:42,717 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 11:37:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:42,721 INFO L225 Difference]: With dead ends: 365 [2022-11-20 11:37:42,721 INFO L226 Difference]: Without dead ends: 365 [2022-11-20 11:37:42,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:42,722 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:42,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 7 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:37:42,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-20 11:37:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-11-20 11:37:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 361 states have (on average 2.89196675900277) internal successors, (1044), 364 states have internal predecessors, (1044), 0 states have call successors, (0), 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 11:37:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 1044 transitions. [2022-11-20 11:37:42,761 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 1044 transitions. Word has length 3 [2022-11-20 11:37:42,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:42,761 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 1044 transitions. [2022-11-20 11:37:42,762 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 11:37:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 1044 transitions. [2022-11-20 11:37:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:37:42,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:42,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:37:42,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:42,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:42,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash 533873081, now seen corresponding path program 1 times [2022-11-20 11:37:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:42,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380004001] [2022-11-20 11:37:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:42,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:42,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:43,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:37:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:43,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:37:43,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:37:43,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-20 11:37:43,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:37:43,220 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 11:37:43,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:43,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380004001] [2022-11-20 11:37:43,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380004001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:43,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:43,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:37:43,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664049856] [2022-11-20 11:37:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:43,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:43,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:43,227 INFO L87 Difference]: Start difference. First operand 365 states and 1044 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:37:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:43,326 INFO L93 Difference]: Finished difference Result 284 states and 783 transitions. [2022-11-20 11:37:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:37:43,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:43,331 INFO L225 Difference]: With dead ends: 284 [2022-11-20 11:37:43,331 INFO L226 Difference]: Without dead ends: 284 [2022-11-20 11:37:43,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:37:43,332 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:43,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:37:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-20 11:37:43,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-20 11:37:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 281 states have (on average 2.786476868327402) internal successors, (783), 283 states have internal predecessors, (783), 0 states have call successors, (0), 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 11:37:43,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 783 transitions. [2022-11-20 11:37:43,349 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 783 transitions. Word has length 5 [2022-11-20 11:37:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:43,350 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 783 transitions. [2022-11-20 11:37:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:37:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 783 transitions. [2022-11-20 11:37:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:37:43,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:43,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:37:43,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:43,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:43,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:43,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash 533873082, now seen corresponding path program 1 times [2022-11-20 11:37:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:43,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199984523] [2022-11-20 11:37:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:43,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:43,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:43,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:43,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 11:37:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:43,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:37:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:43,725 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:37:43,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 11:37:43,773 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 11:37:43,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:43,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:43,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199984523] [2022-11-20 11:37:43,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199984523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:43,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:43,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:37:43,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891101249] [2022-11-20 11:37:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:43,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:43,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:43,777 INFO L87 Difference]: Start difference. First operand 284 states and 783 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:37:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:43,865 INFO L93 Difference]: Finished difference Result 203 states and 522 transitions. [2022-11-20 11:37:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:37:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:43,867 INFO L225 Difference]: With dead ends: 203 [2022-11-20 11:37:43,867 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 11:37:43,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:37:43,868 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:43,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 7 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:37:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 11:37:43,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-20 11:37:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 2.5970149253731343) internal successors, (522), 202 states have internal predecessors, (522), 0 states have call successors, (0), 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 11:37:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 522 transitions. [2022-11-20 11:37:43,878 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 522 transitions. Word has length 5 [2022-11-20 11:37:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:43,879 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 522 transitions. [2022-11-20 11:37:43,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11:37:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 522 transitions. [2022-11-20 11:37:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:37:43,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:43,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:43,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:44,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:44,094 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 11:37:44,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1591467945, now seen corresponding path program 1 times [2022-11-20 11:37:44,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:44,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947686951] [2022-11-20 11:37:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:44,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:44,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:44,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 11:37:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:44,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:37:44,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:44,232 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 11:37:44,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:44,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:44,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947686951] [2022-11-20 11:37:44,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947686951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:44,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:44,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050218631] [2022-11-20 11:37:44,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:44,235 INFO L87 Difference]: Start difference. First operand 203 states and 522 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:37:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:44,384 INFO L93 Difference]: Finished difference Result 343 states and 899 transitions. [2022-11-20 11:37:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:44,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:37:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:44,387 INFO L225 Difference]: With dead ends: 343 [2022-11-20 11:37:44,387 INFO L226 Difference]: Without dead ends: 343 [2022-11-20 11:37:44,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 11:37:44,388 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:44,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 18 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:37:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-20 11:37:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 223. [2022-11-20 11:37:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 2.5927601809954752) internal successors, (573), 222 states have internal predecessors, (573), 0 states have call successors, (0), 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 11:37:44,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 573 transitions. [2022-11-20 11:37:44,420 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 573 transitions. Word has length 13 [2022-11-20 11:37:44,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:44,420 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 573 transitions. [2022-11-20 11:37:44,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:37:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 573 transitions. [2022-11-20 11:37:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:37:44,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:44,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:44,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:44,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:44,635 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 11:37:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -201142331, now seen corresponding path program 1 times [2022-11-20 11:37:44,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:44,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228655924] [2022-11-20 11:37:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:44,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:44,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:44,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:44,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 11:37:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:44,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:37:44,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:44,802 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 11:37:44,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:44,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:44,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228655924] [2022-11-20 11:37:44,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228655924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:44,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:44,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:37:44,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156840691] [2022-11-20 11:37:44,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:44,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:44,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:44,804 INFO L87 Difference]: Start difference. First operand 223 states and 573 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:44,941 INFO L93 Difference]: Finished difference Result 301 states and 756 transitions. [2022-11-20 11:37:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:44,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:37:44,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:44,944 INFO L225 Difference]: With dead ends: 301 [2022-11-20 11:37:44,944 INFO L226 Difference]: Without dead ends: 279 [2022-11-20 11:37:44,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 11:37:44,945 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:44,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:37:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-20 11:37:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2022-11-20 11:37:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 2.5379061371841156) internal successors, (703), 278 states have internal predecessors, (703), 0 states have call successors, (0), 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 11:37:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 703 transitions. [2022-11-20 11:37:44,957 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 703 transitions. Word has length 18 [2022-11-20 11:37:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:44,958 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 703 transitions. [2022-11-20 11:37:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 703 transitions. [2022-11-20 11:37:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:37:44,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:44,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:44,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-20 11:37:45,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:45,173 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 11:37:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1927079060, now seen corresponding path program 1 times [2022-11-20 11:37:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:45,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652813440] [2022-11-20 11:37:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:45,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:45,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:45,175 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:45,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 11:37:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:45,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:37:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:45,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-20 11:37:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:45,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:45,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652813440] [2022-11-20 11:37:45,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652813440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:45,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:45,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564862051] [2022-11-20 11:37:45,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:45,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:45,337 INFO L87 Difference]: Start difference. First operand 279 states and 703 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 11:37:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:45,496 INFO L93 Difference]: Finished difference Result 197 states and 413 transitions. [2022-11-20 11:37:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 23 [2022-11-20 11:37:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:45,498 INFO L225 Difference]: With dead ends: 197 [2022-11-20 11:37:45,498 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 11:37:45,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 11:37:45,499 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:45,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:37:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 11:37:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 181. [2022-11-20 11:37:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 179 states have (on average 2.1396648044692737) internal successors, (383), 180 states have internal predecessors, (383), 0 states have call successors, (0), 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 11:37:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 383 transitions. [2022-11-20 11:37:45,506 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 383 transitions. Word has length 23 [2022-11-20 11:37:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:45,506 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 383 transitions. [2022-11-20 11:37:45,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 11:37:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 383 transitions. [2022-11-20 11:37:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:37:45,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:45,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:45,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:45,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:45,716 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 11:37:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1242535192, now seen corresponding path program 2 times [2022-11-20 11:37:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:45,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277596107] [2022-11-20 11:37:45,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:37:45,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:45,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:45,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:45,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 11:37:45,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:37:45,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:45,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:37:45,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:37:46,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:37:46,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277596107] [2022-11-20 11:37:46,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277596107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:46,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:37:46,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-11-20 11:37:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818814152] [2022-11-20 11:37:46,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:37:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:37:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:37:46,233 INFO L87 Difference]: Start difference. First operand 181 states and 383 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 11:37:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:47,008 INFO L93 Difference]: Finished difference Result 487 states and 1012 transitions. [2022-11-20 11:37:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:37:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2022-11-20 11:37:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:47,012 INFO L225 Difference]: With dead ends: 487 [2022-11-20 11:37:47,012 INFO L226 Difference]: Without dead ends: 487 [2022-11-20 11:37:47,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:37:47,013 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 335 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:47,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 103 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:37:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-20 11:37:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 364. [2022-11-20 11:37:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 2.0801104972375692) internal successors, (753), 363 states have internal predecessors, (753), 0 states have call successors, (0), 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 11:37:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 753 transitions. [2022-11-20 11:37:47,027 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 753 transitions. Word has length 23 [2022-11-20 11:37:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:47,027 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 753 transitions. [2022-11-20 11:37:47,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 11:37:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 753 transitions. [2022-11-20 11:37:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:37:47,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:47,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:47,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:47,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash -167802690, now seen corresponding path program 1 times [2022-11-20 11:37:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:47,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780995857] [2022-11-20 11:37:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:47,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:47,244 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:47,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 11:37:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:47,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:37:47,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:37:47,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:37:47,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:47,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780995857] [2022-11-20 11:37:47,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780995857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:47,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:37:47,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 11:37:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515060301] [2022-11-20 11:37:47,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:47,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:37:47,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:37:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:37:47,469 INFO L87 Difference]: Start difference. First operand 364 states and 753 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:47,790 INFO L93 Difference]: Finished difference Result 688 states and 1394 transitions. [2022-11-20 11:37:47,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:37:47,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 11:37:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:47,794 INFO L225 Difference]: With dead ends: 688 [2022-11-20 11:37:47,794 INFO L226 Difference]: Without dead ends: 688 [2022-11-20 11:37:47,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:37:47,795 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:47,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 41 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:37:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-20 11:37:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 670. [2022-11-20 11:37:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 668 states have (on average 2.037425149700599) internal successors, (1361), 669 states have internal predecessors, (1361), 0 states have call successors, (0), 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 11:37:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1361 transitions. [2022-11-20 11:37:47,814 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1361 transitions. Word has length 28 [2022-11-20 11:37:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:47,814 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1361 transitions. [2022-11-20 11:37:47,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1361 transitions. [2022-11-20 11:37:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:37:47,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:47,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:47,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:48,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:48,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash -300206370, now seen corresponding path program 2 times [2022-11-20 11:37:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:48,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815729728] [2022-11-20 11:37:48,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:37:48,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:48,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:48,039 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:48,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 11:37:48,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:37:48,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:48,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:37:48,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:37:48,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:48,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:48,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815729728] [2022-11-20 11:37:48,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815729728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:48,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:48,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:37:48,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845821093] [2022-11-20 11:37:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:48,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:48,669 INFO L87 Difference]: Start difference. First operand 670 states and 1361 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 11:37:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:48,702 INFO L93 Difference]: Finished difference Result 1270 states and 2592 transitions. [2022-11-20 11:37:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 38 [2022-11-20 11:37:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:48,709 INFO L225 Difference]: With dead ends: 1270 [2022-11-20 11:37:48,709 INFO L226 Difference]: Without dead ends: 1265 [2022-11-20 11:37:48,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 11:37:48,710 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:48,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-20 11:37:48,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-11-20 11:37:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 979. [2022-11-20 11:37:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 977 states have (on average 2.0736949846468784) internal successors, (2026), 978 states have internal predecessors, (2026), 0 states have call successors, (0), 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 11:37:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 2026 transitions. [2022-11-20 11:37:48,742 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 2026 transitions. Word has length 38 [2022-11-20 11:37:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:48,742 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 2026 transitions. [2022-11-20 11:37:48,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 11:37:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 2026 transitions. [2022-11-20 11:37:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:37:48,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:48,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:48,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-20 11:37:48,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:48,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:48,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1342048140, now seen corresponding path program 1 times [2022-11-20 11:37:48,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:48,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079830] [2022-11-20 11:37:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:48,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:48,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:48,961 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:48,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 11:37:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:49,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:37:49,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:37:49,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:37:49,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:49,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079830] [2022-11-20 11:37:49,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:49,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:37:49,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:37:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418808612] [2022-11-20 11:37:49,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:49,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:37:49,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:37:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:37:49,272 INFO L87 Difference]: Start difference. First operand 979 states and 2026 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:49,642 INFO L93 Difference]: Finished difference Result 823 states and 1659 transitions. [2022-11-20 11:37:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:37:49,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 11:37:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:49,646 INFO L225 Difference]: With dead ends: 823 [2022-11-20 11:37:49,646 INFO L226 Difference]: Without dead ends: 785 [2022-11-20 11:37:49,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:37:49,647 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 52 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:49,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 8 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:37:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-20 11:37:49,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 703. [2022-11-20 11:37:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 701 states have (on average 1.9914407988587732) internal successors, (1396), 702 states have internal predecessors, (1396), 0 states have call successors, (0), 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 11:37:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1396 transitions. [2022-11-20 11:37:49,667 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1396 transitions. Word has length 41 [2022-11-20 11:37:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:49,668 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1396 transitions. [2022-11-20 11:37:49,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:49,668 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1396 transitions. [2022-11-20 11:37:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:37:49,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:49,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:49,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:49,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:49,883 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:49,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:49,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1990042682, now seen corresponding path program 2 times [2022-11-20 11:37:49,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:49,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038219111] [2022-11-20 11:37:49,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:37:49,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:49,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:49,885 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:49,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 11:37:50,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:37:50,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:50,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:37:50,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:37:50,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:50,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:50,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038219111] [2022-11-20 11:37:50,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038219111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:50,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:50,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:37:50,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313939112] [2022-11-20 11:37:50,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:50,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:50,515 INFO L87 Difference]: Start difference. First operand 703 states and 1396 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 11:37:50,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:50,545 INFO L93 Difference]: Finished difference Result 1091 states and 2166 transitions. [2022-11-20 11:37:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:50,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 41 [2022-11-20 11:37:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:50,550 INFO L225 Difference]: With dead ends: 1091 [2022-11-20 11:37:50,550 INFO L226 Difference]: Without dead ends: 1064 [2022-11-20 11:37:50,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 11:37:50,551 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:50,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-20 11:37:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-11-20 11:37:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 737. [2022-11-20 11:37:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 735 states have (on average 1.9795918367346939) internal successors, (1455), 736 states have internal predecessors, (1455), 0 states have call successors, (0), 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 11:37:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1455 transitions. [2022-11-20 11:37:50,574 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1455 transitions. Word has length 41 [2022-11-20 11:37:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:50,574 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1455 transitions. [2022-11-20 11:37:50,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 11:37:50,575 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1455 transitions. [2022-11-20 11:37:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:37:50,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:50,576 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:50,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:50,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:50,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1407413791, now seen corresponding path program 1 times [2022-11-20 11:37:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:50,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222542475] [2022-11-20 11:37:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:50,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:50,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 11:37:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:50,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:37:50,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:37:51,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:37:51,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222542475] [2022-11-20 11:37:51,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222542475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:51,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:37:51,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 11:37:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073074539] [2022-11-20 11:37:51,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:51,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:37:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:37:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:37:51,212 INFO L87 Difference]: Start difference. First operand 737 states and 1455 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 11:37:51,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:51,677 INFO L93 Difference]: Finished difference Result 505 states and 964 transitions. [2022-11-20 11:37:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:37:51,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 41 [2022-11-20 11:37:51,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:51,679 INFO L225 Difference]: With dead ends: 505 [2022-11-20 11:37:51,679 INFO L226 Difference]: Without dead ends: 491 [2022-11-20 11:37:51,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:37:51,680 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 59 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:51,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 10 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:37:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-20 11:37:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 445. [2022-11-20 11:37:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 443 states have (on average 1.9525959367945824) internal successors, (865), 444 states have internal predecessors, (865), 0 states have call successors, (0), 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 11:37:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 865 transitions. [2022-11-20 11:37:51,693 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 865 transitions. Word has length 41 [2022-11-20 11:37:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:51,694 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 865 transitions. [2022-11-20 11:37:51,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 11:37:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 865 transitions. [2022-11-20 11:37:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:37:51,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:51,696 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:51,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-20 11:37:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:51,908 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -530497589, now seen corresponding path program 2 times [2022-11-20 11:37:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:51,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008749547] [2022-11-20 11:37:51,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:37:51,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:51,909 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:51,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 11:37:52,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:37:52,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:52,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:37:52,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:37:52,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:52,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:37:52,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008749547] [2022-11-20 11:37:52,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008749547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:52,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:52,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:37:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44504201] [2022-11-20 11:37:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:52,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:37:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:52,526 INFO L87 Difference]: Start difference. First operand 445 states and 865 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 11:37:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:52,568 INFO L93 Difference]: Finished difference Result 826 states and 1598 transitions. [2022-11-20 11:37:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 41 [2022-11-20 11:37:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:52,572 INFO L225 Difference]: With dead ends: 826 [2022-11-20 11:37:52,573 INFO L226 Difference]: Without dead ends: 807 [2022-11-20 11:37:52,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 11:37:52,575 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:52,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-20 11:37:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-11-20 11:37:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 599. [2022-11-20 11:37:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 597 states have (on average 1.979899497487437) internal successors, (1182), 598 states have internal predecessors, (1182), 0 states have call successors, (0), 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 11:37:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 1182 transitions. [2022-11-20 11:37:52,593 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 1182 transitions. Word has length 41 [2022-11-20 11:37:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:52,594 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 1182 transitions. [2022-11-20 11:37:52,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 11:37:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 1182 transitions. [2022-11-20 11:37:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 11:37:52,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:52,596 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:52,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:52,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:52,808 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 11:37:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1662633374, now seen corresponding path program 3 times [2022-11-20 11:37:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:37:52,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283015399] [2022-11-20 11:37:52,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:37:52,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:52,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:37:52,810 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:37:52,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 11:37:53,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:37:53,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 11:37:53,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:37:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:37:53,238 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 11:37:53,238 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:37:53,239 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-20 11:37:53,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-20 11:37:53,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-20 11:37:53,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-20 11:37:53,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-20 11:37:53,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-20 11:37:53,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-20 11:37:53,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-20 11:37:53,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-20 11:37:53,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-20 11:37:53,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-20 11:37:53,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-20 11:37:53,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:53,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:37:53,458 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:53,461 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:37:53,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:37:53,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:37:53 BasicIcfg [2022-11-20 11:37:53,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:37:53,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:37:53,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:37:53,548 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:37:53,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:07" (3/4) ... [2022-11-20 11:37:53,551 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:37:53,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:37:53,552 INFO L158 Benchmark]: Toolchain (without parser) took 47753.76ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 46.5MB in the beginning and 53.0MB in the end (delta: -6.5MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2022-11-20 11:37:53,552 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:37:53,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 832.52ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 46.3MB in the beginning and 56.1MB in the end (delta: -9.8MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2022-11-20 11:37:53,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.82ms. Allocated memory is still 86.0MB. Free memory was 56.1MB in the beginning and 53.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:37:53,553 INFO L158 Benchmark]: Boogie Preprocessor took 71.12ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 51.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:37:53,553 INFO L158 Benchmark]: RCFGBuilder took 752.62ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 58.2MB in the end (delta: -6.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2022-11-20 11:37:53,557 INFO L158 Benchmark]: TraceAbstraction took 46003.19ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 57.4MB in the beginning and 53.0MB in the end (delta: 4.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2022-11-20 11:37:53,557 INFO L158 Benchmark]: Witness Printer took 3.91ms. Allocated memory is still 104.9MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:37:53,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 832.52ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 46.3MB in the beginning and 56.1MB in the end (delta: -9.8MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.82ms. Allocated memory is still 86.0MB. Free memory was 56.1MB in the beginning and 53.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.12ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 51.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 752.62ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 58.2MB in the end (delta: -6.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * TraceAbstraction took 46003.19ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 57.4MB in the beginning and 53.0MB in the end (delta: 4.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * Witness Printer took 3.91ms. Allocated memory is still 104.9MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.1s, 145 PlacesBefore, 44 PlacesAfterwards, 148 TransitionsBefore, 42 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 84 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 143 TotalNumberOfCompositions, 5394 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3415, independent: 3256, independent conditional: 0, independent unconditional: 3256, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1647, independent: 1602, independent conditional: 0, independent unconditional: 1602, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1647, independent: 1575, independent conditional: 0, independent unconditional: 1575, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 72, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 234, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3415, independent: 1654, independent conditional: 0, independent unconditional: 1654, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 1647, unknown conditional: 0, unknown unconditional: 1647] , Statistics on independence cache: Total cache size (in pairs): 266, Positive cache size: 249, Positive conditional cache size: 0, Positive unconditional cache size: 249, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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 - UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 919. Possible FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={9:0}, t2={7:0}, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={9:0}, t2={7:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, j=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, j=0, m={3:0}, num=0, t1={9:0}, t2={7:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={9:0}, t2={7:0}, total=1] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={9:0}, t2={7:0}, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={9:0}, t2={7:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={9:0}, t2={7:0}, total=6] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 184 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 45.7s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 33.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 681 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 681 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1094 IncrementalHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 122 mSDtfsCounter, 1094 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 449 GetRequests, 401 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=979occurred in iteration=11, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 1226 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 367 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 438 ConstructedInterpolants, 117 QuantifiedInterpolants, 3705 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1971 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 193/213 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 11:37:53,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00d9fca4-84ab-45bd-88eb-2cb28268bbe1/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: UNKNOWN: Overapproximated counterexample