./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix010.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix010.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 371e0ad4620d67bc913500e97f289ec14c56f7c02bd7df3fa28779e14d33459a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:48:16,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:48:16,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:48:16,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:48:16,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:48:16,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:48:16,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:48:16,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:48:16,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:48:16,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:48:16,808 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:48:16,808 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:48:16,809 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:48:16,811 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:48:16,811 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:48:16,812 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:48:16,812 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:48:16,813 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:48:16,813 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:48:16,814 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:48:16,814 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:48:16,815 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:48:16,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:48:16,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:48:16,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:48:16,818 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:48:16,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:48:16,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:48:16,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:48:16,820 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:48:16,821 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:48:16,821 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:48:16,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:48:16,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:48:16,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:48:16,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:48:16,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:48:16,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:48:16,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:48:16,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:48:16,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:16,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:48:16,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:48:16,825 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:48:16,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:48:16,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:48:16,827 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:48:16,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:48:16,827 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371e0ad4620d67bc913500e97f289ec14c56f7c02bd7df3fa28779e14d33459a [2023-11-21 19:48:17,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:48:17,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:48:17,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:48:17,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:48:17,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:48:17,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread-wmm/mix010.opt.i [2023-11-21 19:48:20,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:48:20,621 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:48:20,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/sv-benchmarks/c/pthread-wmm/mix010.opt.i [2023-11-21 19:48:20,644 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data/3c8978321/53a070912b5d45beb999530b7caac580/FLAG91417bc72 [2023-11-21 19:48:20,661 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data/3c8978321/53a070912b5d45beb999530b7caac580 [2023-11-21 19:48:20,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:48:20,671 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:48:20,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:20,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:48:20,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:48:20,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:20" (1/1) ... [2023-11-21 19:48:20,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34346a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:20, skipping insertion in model container [2023-11-21 19:48:20,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:20" (1/1) ... [2023-11-21 19:48:20,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:48:21,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:21,180 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:48:21,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:21,279 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:48:21,279 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:48:21,287 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:48:21,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21 WrapperNode [2023-11-21 19:48:21,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:21,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:21,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:48:21,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:48:21,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,349 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2023-11-21 19:48:21,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:21,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:48:21,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:48:21,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:48:21,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:48:21,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:48:21,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:48:21,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:48:21,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:21,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:48:21,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:48:21,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:48:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:48:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:48:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:48:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:48:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:48:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 19:48:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 19:48:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 19:48:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 19:48:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 19:48:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 19:48:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:48:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:48:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:48:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:48:21,510 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:48:21,680 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:48:21,682 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:48:22,109 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:48:22,448 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:48:22,448 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:48:22,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:22 BoogieIcfgContainer [2023-11-21 19:48:22,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:48:22,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:48:22,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:48:22,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:48:22,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:48:20" (1/3) ... [2023-11-21 19:48:22,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4647c2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:22, skipping insertion in model container [2023-11-21 19:48:22,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (2/3) ... [2023-11-21 19:48:22,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4647c2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:22, skipping insertion in model container [2023-11-21 19:48:22,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:22" (3/3) ... [2023-11-21 19:48:22,464 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.opt.i [2023-11-21 19:48:22,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:48:22,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-21 19:48:22,485 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:48:22,571 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 19:48:22,610 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 56 transitions, 124 flow [2023-11-21 19:48:23,122 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8482 states, 8471 states have (on average 3.659662377523315) internal successors, (31001), 8481 states have internal predecessors, (31001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:23,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:48:23,149 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;@603a936d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:48:23,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 19:48:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 8482 states, 8471 states have (on average 3.659662377523315) internal successors, (31001), 8481 states have internal predecessors, (31001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:48:23,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:23,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:48:23,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:23,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash 13370, now seen corresponding path program 1 times [2023-11-21 19:48:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:23,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117199639] [2023-11-21 19:48:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:23,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:23,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117199639] [2023-11-21 19:48:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117199639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:23,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:48:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130021376] [2023-11-21 19:48:23,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:23,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:23,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:23,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:23,688 INFO L87 Difference]: Start difference. First operand has 8482 states, 8471 states have (on average 3.659662377523315) internal successors, (31001), 8481 states have internal predecessors, (31001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:24,003 INFO L93 Difference]: Finished difference Result 7914 states and 27805 transitions. [2023-11-21 19:48:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:24,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 19:48:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:24,134 INFO L225 Difference]: With dead ends: 7914 [2023-11-21 19:48:24,134 INFO L226 Difference]: Without dead ends: 7914 [2023-11-21 19:48:24,136 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 [2023-11-21 19:48:24,143 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:24,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2023-11-21 19:48:24,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 7914. [2023-11-21 19:48:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7914 states, 7904 states have (on average 3.517839068825911) internal successors, (27805), 7913 states have internal predecessors, (27805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 27805 transitions. [2023-11-21 19:48:24,769 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 27805 transitions. Word has length 2 [2023-11-21 19:48:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:24,770 INFO L495 AbstractCegarLoop]: Abstraction has 7914 states and 27805 transitions. [2023-11-21 19:48:24,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 27805 transitions. [2023-11-21 19:48:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:48:24,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:24,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:48:24,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:48:24,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:24,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 13371, now seen corresponding path program 1 times [2023-11-21 19:48:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:24,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175712427] [2023-11-21 19:48:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:24,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175712427] [2023-11-21 19:48:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175712427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:24,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:24,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:48:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132242263] [2023-11-21 19:48:24,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:24,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:24,921 INFO L87 Difference]: Start difference. First operand 7914 states and 27805 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:25,150 INFO L93 Difference]: Finished difference Result 7913 states and 27804 transitions. [2023-11-21 19:48:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:25,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 19:48:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:25,245 INFO L225 Difference]: With dead ends: 7913 [2023-11-21 19:48:25,245 INFO L226 Difference]: Without dead ends: 7913 [2023-11-21 19:48:25,250 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 [2023-11-21 19:48:25,251 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:25,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2023-11-21 19:48:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7913. [2023-11-21 19:48:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7913 states, 7904 states have (on average 3.5177125506072873) internal successors, (27804), 7912 states have internal predecessors, (27804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 27804 transitions. [2023-11-21 19:48:25,787 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 27804 transitions. Word has length 2 [2023-11-21 19:48:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:25,788 INFO L495 AbstractCegarLoop]: Abstraction has 7913 states and 27804 transitions. [2023-11-21 19:48:25,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:25,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 27804 transitions. [2023-11-21 19:48:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:48:25,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:25,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:48:25,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:48:25,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:25,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash 398712960, now seen corresponding path program 1 times [2023-11-21 19:48:25,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:25,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916183297] [2023-11-21 19:48:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:25,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916183297] [2023-11-21 19:48:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916183297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:25,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:25,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017421564] [2023-11-21 19:48:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:25,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:25,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:25,889 INFO L87 Difference]: Start difference. First operand 7913 states and 27804 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:26,111 INFO L93 Difference]: Finished difference Result 7906 states and 27791 transitions. [2023-11-21 19:48:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:26,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2023-11-21 19:48:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:26,177 INFO L225 Difference]: With dead ends: 7906 [2023-11-21 19:48:26,178 INFO L226 Difference]: Without dead ends: 7906 [2023-11-21 19:48:26,178 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 [2023-11-21 19:48:26,187 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:26,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 42 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7906 states. [2023-11-21 19:48:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7906 to 7906. [2023-11-21 19:48:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7906 states, 7898 states have (on average 3.518738921245885) internal successors, (27791), 7905 states have internal predecessors, (27791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 27791 transitions. [2023-11-21 19:48:26,609 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 27791 transitions. Word has length 5 [2023-11-21 19:48:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:26,610 INFO L495 AbstractCegarLoop]: Abstraction has 7906 states and 27791 transitions. [2023-11-21 19:48:26,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 27791 transitions. [2023-11-21 19:48:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:48:26,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:26,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:48:26,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:48:26,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:26,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash 398712959, now seen corresponding path program 1 times [2023-11-21 19:48:26,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:26,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423482199] [2023-11-21 19:48:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:26,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:26,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423482199] [2023-11-21 19:48:26,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423482199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:26,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:26,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:26,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880998357] [2023-11-21 19:48:26,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:26,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:26,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:26,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:26,725 INFO L87 Difference]: Start difference. First operand 7906 states and 27791 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:26,886 INFO L93 Difference]: Finished difference Result 7899 states and 27778 transitions. [2023-11-21 19:48:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2023-11-21 19:48:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:26,939 INFO L225 Difference]: With dead ends: 7899 [2023-11-21 19:48:26,939 INFO L226 Difference]: Without dead ends: 7899 [2023-11-21 19:48:26,940 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 [2023-11-21 19:48:26,941 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:26,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 41 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-11-21 19:48:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7899. [2023-11-21 19:48:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7892 states have (on average 3.51976685250887) internal successors, (27778), 7898 states have internal predecessors, (27778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 27778 transitions. [2023-11-21 19:48:27,360 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 27778 transitions. Word has length 5 [2023-11-21 19:48:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:27,360 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 27778 transitions. [2023-11-21 19:48:27,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 27778 transitions. [2023-11-21 19:48:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:48:27,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:27,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:27,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:48:27,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:27,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:27,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1821374361, now seen corresponding path program 1 times [2023-11-21 19:48:27,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:27,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856053042] [2023-11-21 19:48:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:27,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:27,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:27,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856053042] [2023-11-21 19:48:27,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856053042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:27,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:27,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894622639] [2023-11-21 19:48:27,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:27,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:27,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:27,422 INFO L87 Difference]: Start difference. First operand 7899 states and 27778 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:27,537 INFO L93 Difference]: Finished difference Result 7836 states and 27605 transitions. [2023-11-21 19:48:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:27,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-21 19:48:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:27,588 INFO L225 Difference]: With dead ends: 7836 [2023-11-21 19:48:27,588 INFO L226 Difference]: Without dead ends: 7836 [2023-11-21 19:48:27,588 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 [2023-11-21 19:48:27,589 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:27,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 47 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7836 states. [2023-11-21 19:48:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7836 to 7836. [2023-11-21 19:48:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7830 states have (on average 3.525542784163474) internal successors, (27605), 7835 states have internal predecessors, (27605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 27605 transitions. [2023-11-21 19:48:28,061 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 27605 transitions. Word has length 8 [2023-11-21 19:48:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:28,062 INFO L495 AbstractCegarLoop]: Abstraction has 7836 states and 27605 transitions. [2023-11-21 19:48:28,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 27605 transitions. [2023-11-21 19:48:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:48:28,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:28,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:48:28,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:28,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1821374360, now seen corresponding path program 1 times [2023-11-21 19:48:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917493125] [2023-11-21 19:48:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:28,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917493125] [2023-11-21 19:48:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917493125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:28,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:28,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:28,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980020570] [2023-11-21 19:48:28,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:28,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:28,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:28,146 INFO L87 Difference]: Start difference. First operand 7836 states and 27605 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:28,254 INFO L93 Difference]: Finished difference Result 7773 states and 27432 transitions. [2023-11-21 19:48:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:28,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-21 19:48:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:28,291 INFO L225 Difference]: With dead ends: 7773 [2023-11-21 19:48:28,291 INFO L226 Difference]: Without dead ends: 7773 [2023-11-21 19:48:28,292 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 [2023-11-21 19:48:28,292 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:28,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 48 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7773 states. [2023-11-21 19:48:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7773 to 7773. [2023-11-21 19:48:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 7768 states have (on average 3.5314109165808443) internal successors, (27432), 7772 states have internal predecessors, (27432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 27432 transitions. [2023-11-21 19:48:28,658 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 27432 transitions. Word has length 8 [2023-11-21 19:48:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:28,658 INFO L495 AbstractCegarLoop]: Abstraction has 7773 states and 27432 transitions. [2023-11-21 19:48:28,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 27432 transitions. [2023-11-21 19:48:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:48:28,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:28,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:28,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:48:28,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:28,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:28,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2053639799, now seen corresponding path program 1 times [2023-11-21 19:48:28,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:28,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767807518] [2023-11-21 19:48:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:28,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:28,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:28,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767807518] [2023-11-21 19:48:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767807518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:28,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:28,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:48:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186366465] [2023-11-21 19:48:28,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:28,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:28,863 INFO L87 Difference]: Start difference. First operand 7773 states and 27432 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:28,987 INFO L93 Difference]: Finished difference Result 6891 states and 24191 transitions. [2023-11-21 19:48:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 19:48:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:29,029 INFO L225 Difference]: With dead ends: 6891 [2023-11-21 19:48:29,029 INFO L226 Difference]: Without dead ends: 6765 [2023-11-21 19:48:29,029 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 [2023-11-21 19:48:29,031 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:29,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2023-11-21 19:48:29,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6765. [2023-11-21 19:48:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6765 states, 6763 states have (on average 3.5164867662280055) internal successors, (23782), 6764 states have internal predecessors, (23782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 23782 transitions. [2023-11-21 19:48:29,399 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 23782 transitions. Word has length 11 [2023-11-21 19:48:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:29,400 INFO L495 AbstractCegarLoop]: Abstraction has 6765 states and 23782 transitions. [2023-11-21 19:48:29,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 23782 transitions. [2023-11-21 19:48:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:48:29,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:29,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:48:29,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:29,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1451458205, now seen corresponding path program 1 times [2023-11-21 19:48:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714373763] [2023-11-21 19:48:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:29,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:29,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714373763] [2023-11-21 19:48:29,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714373763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:29,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:29,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 19:48:29,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659738217] [2023-11-21 19:48:29,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:29,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:48:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:48:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:48:29,972 INFO L87 Difference]: Start difference. First operand 6765 states and 23782 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2023-11-21 19:48:30,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:30,418 INFO L93 Difference]: Finished difference Result 9971 states and 34720 transitions. [2023-11-21 19:48:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:48:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 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 [2023-11-21 19:48:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:30,469 INFO L225 Difference]: With dead ends: 9971 [2023-11-21 19:48:30,469 INFO L226 Difference]: Without dead ends: 8963 [2023-11-21 19:48:30,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:48:30,471 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 97 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:30,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 324 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:48:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8963 states. [2023-11-21 19:48:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8963 to 8123. [2023-11-21 19:48:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8123 states, 8121 states have (on average 3.4950129294421868) internal successors, (28383), 8122 states have internal predecessors, (28383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8123 states to 8123 states and 28383 transitions. [2023-11-21 19:48:30,872 INFO L78 Accepts]: Start accepts. Automaton has 8123 states and 28383 transitions. Word has length 18 [2023-11-21 19:48:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:30,873 INFO L495 AbstractCegarLoop]: Abstraction has 8123 states and 28383 transitions. [2023-11-21 19:48:30,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2023-11-21 19:48:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8123 states and 28383 transitions. [2023-11-21 19:48:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:48:30,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:30,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:30,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 19:48:30,880 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:30,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1451456985, now seen corresponding path program 1 times [2023-11-21 19:48:30,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:30,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755632360] [2023-11-21 19:48:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:30,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:31,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755632360] [2023-11-21 19:48:31,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755632360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:31,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:31,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:48:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622168802] [2023-11-21 19:48:31,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:48:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:31,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:48:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:48:31,110 INFO L87 Difference]: Start difference. First operand 8123 states and 28383 transitions. Second operand has 4 states, 4 states have (on average 4.5) 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) [2023-11-21 19:48:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:31,262 INFO L93 Difference]: Finished difference Result 6507 states and 21023 transitions. [2023-11-21 19:48:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:48:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) 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 [2023-11-21 19:48:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:31,291 INFO L225 Difference]: With dead ends: 6507 [2023-11-21 19:48:31,292 INFO L226 Difference]: Without dead ends: 5723 [2023-11-21 19:48:31,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:48:31,293 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:31,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 56 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2023-11-21 19:48:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 5723. [2023-11-21 19:48:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5723 states, 5721 states have (on average 3.2674357629785002) internal successors, (18693), 5722 states have internal predecessors, (18693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5723 states to 5723 states and 18693 transitions. [2023-11-21 19:48:31,538 INFO L78 Accepts]: Start accepts. Automaton has 5723 states and 18693 transitions. Word has length 18 [2023-11-21 19:48:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:31,538 INFO L495 AbstractCegarLoop]: Abstraction has 5723 states and 18693 transitions. [2023-11-21 19:48:31,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) 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) [2023-11-21 19:48:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5723 states and 18693 transitions. [2023-11-21 19:48:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 19:48:31,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:31,548 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] [2023-11-21 19:48:31,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:48:31,549 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:31,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash -390118326, now seen corresponding path program 1 times [2023-11-21 19:48:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:31,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002433081] [2023-11-21 19:48:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:31,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:31,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002433081] [2023-11-21 19:48:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002433081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:31,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:31,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:48:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121221681] [2023-11-21 19:48:31,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:31,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:48:31,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:48:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:48:31,736 INFO L87 Difference]: Start difference. First operand 5723 states and 18693 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 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) [2023-11-21 19:48:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:31,926 INFO L93 Difference]: Finished difference Result 3487 states and 10517 transitions. [2023-11-21 19:48:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:48:31,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 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 [2023-11-21 19:48:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:31,941 INFO L225 Difference]: With dead ends: 3487 [2023-11-21 19:48:31,941 INFO L226 Difference]: Without dead ends: 3003 [2023-11-21 19:48:31,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:48:31,942 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 128 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:31,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 68 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2023-11-21 19:48:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3003. [2023-11-21 19:48:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3001 states have (on average 3.014661779406864) internal successors, (9047), 3002 states have internal predecessors, (9047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 9047 transitions. [2023-11-21 19:48:32,047 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 9047 transitions. Word has length 23 [2023-11-21 19:48:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:32,048 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 9047 transitions. [2023-11-21 19:48:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 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) [2023-11-21 19:48:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 9047 transitions. [2023-11-21 19:48:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:48:32,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:32,058 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, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 19:48:32,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:32,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1370123758, now seen corresponding path program 1 times [2023-11-21 19:48:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14776779] [2023-11-21 19:48:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:32,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:32,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:32,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14776779] [2023-11-21 19:48:32,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14776779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:32,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:32,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:48:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652205628] [2023-11-21 19:48:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:32,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:48:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:48:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:48:32,420 INFO L87 Difference]: Start difference. First operand 3003 states and 9047 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2023-11-21 19:48:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:32,608 INFO L93 Difference]: Finished difference Result 2123 states and 6327 transitions. [2023-11-21 19:48:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:48:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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 29 [2023-11-21 19:48:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:32,622 INFO L225 Difference]: With dead ends: 2123 [2023-11-21 19:48:32,622 INFO L226 Difference]: Without dead ends: 1979 [2023-11-21 19:48:32,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:48:32,624 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 164 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:32,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 54 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2023-11-21 19:48:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1979. [2023-11-21 19:48:32,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1977 states have (on average 2.9939301972685888) internal successors, (5919), 1978 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 5919 transitions. [2023-11-21 19:48:32,689 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 5919 transitions. Word has length 29 [2023-11-21 19:48:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:32,690 INFO L495 AbstractCegarLoop]: Abstraction has 1979 states and 5919 transitions. [2023-11-21 19:48:32,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2023-11-21 19:48:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 5919 transitions. [2023-11-21 19:48:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:32,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:32,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:32,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 19:48:32,702 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:32,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -913340742, now seen corresponding path program 1 times [2023-11-21 19:48:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:32,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215971784] [2023-11-21 19:48:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:33,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:33,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215971784] [2023-11-21 19:48:33,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215971784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:33,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:33,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 19:48:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638944542] [2023-11-21 19:48:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 19:48:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:33,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 19:48:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:48:33,758 INFO L87 Difference]: Start difference. First operand 1979 states and 5919 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:34,195 INFO L93 Difference]: Finished difference Result 3464 states and 10264 transitions. [2023-11-21 19:48:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:48:34,195 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-21 19:48:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:34,209 INFO L225 Difference]: With dead ends: 3464 [2023-11-21 19:48:34,210 INFO L226 Difference]: Without dead ends: 3448 [2023-11-21 19:48:34,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:48:34,211 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 84 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:34,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 398 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:48:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2023-11-21 19:48:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 2034. [2023-11-21 19:48:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 2032 states have (on average 2.981299212598425) internal successors, (6058), 2033 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 6058 transitions. [2023-11-21 19:48:34,293 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 6058 transitions. Word has length 36 [2023-11-21 19:48:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:34,293 INFO L495 AbstractCegarLoop]: Abstraction has 2034 states and 6058 transitions. [2023-11-21 19:48:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 6058 transitions. [2023-11-21 19:48:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:34,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:34,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:34,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 19:48:34,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:34,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash -913339522, now seen corresponding path program 1 times [2023-11-21 19:48:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:34,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248483503] [2023-11-21 19:48:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:34,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:34,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248483503] [2023-11-21 19:48:34,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248483503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:34,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:48:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076365682] [2023-11-21 19:48:34,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:34,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:48:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:48:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:48:34,738 INFO L87 Difference]: Start difference. First operand 2034 states and 6058 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:34,999 INFO L93 Difference]: Finished difference Result 2698 states and 7946 transitions. [2023-11-21 19:48:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:48:34,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-21 19:48:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:35,007 INFO L225 Difference]: With dead ends: 2698 [2023-11-21 19:48:35,008 INFO L226 Difference]: Without dead ends: 2354 [2023-11-21 19:48:35,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:48:35,009 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 69 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:35,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 139 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:48:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2023-11-21 19:48:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2026. [2023-11-21 19:48:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 2024 states have (on average 2.927865612648221) internal successors, (5926), 2025 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 5926 transitions. [2023-11-21 19:48:35,085 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 5926 transitions. Word has length 36 [2023-11-21 19:48:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:35,085 INFO L495 AbstractCegarLoop]: Abstraction has 2026 states and 5926 transitions. [2023-11-21 19:48:35,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 5926 transitions. [2023-11-21 19:48:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:35,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:35,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:35,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 19:48:35,095 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:35,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash 21748710, now seen corresponding path program 2 times [2023-11-21 19:48:35,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:35,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356165069] [2023-11-21 19:48:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:35,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:35,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:35,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356165069] [2023-11-21 19:48:35,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356165069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:35,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:35,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 19:48:35,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702680064] [2023-11-21 19:48:35,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:48:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:35,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:48:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:48:35,554 INFO L87 Difference]: Start difference. First operand 2026 states and 5926 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:35,779 INFO L93 Difference]: Finished difference Result 2690 states and 7814 transitions. [2023-11-21 19:48:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:48:35,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-21 19:48:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:35,786 INFO L225 Difference]: With dead ends: 2690 [2023-11-21 19:48:35,786 INFO L226 Difference]: Without dead ends: 1961 [2023-11-21 19:48:35,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:48:35,788 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 94 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:35,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 169 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:48:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2023-11-21 19:48:35,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1769. [2023-11-21 19:48:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1767 states have (on average 2.8839841539332203) internal successors, (5096), 1768 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 5096 transitions. [2023-11-21 19:48:35,836 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 5096 transitions. Word has length 36 [2023-11-21 19:48:35,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:35,837 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 5096 transitions. [2023-11-21 19:48:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 5096 transitions. [2023-11-21 19:48:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:35,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:35,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 19:48:35,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:35,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2036290430, now seen corresponding path program 2 times [2023-11-21 19:48:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998351082] [2023-11-21 19:48:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:35,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:36,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:36,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998351082] [2023-11-21 19:48:36,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998351082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:36,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:36,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 19:48:36,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740183623] [2023-11-21 19:48:36,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:36,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 19:48:36,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:36,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 19:48:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:48:36,591 INFO L87 Difference]: Start difference. First operand 1769 states and 5096 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:36,984 INFO L93 Difference]: Finished difference Result 2317 states and 6654 transitions. [2023-11-21 19:48:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:48:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-21 19:48:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:36,989 INFO L225 Difference]: With dead ends: 2317 [2023-11-21 19:48:36,989 INFO L226 Difference]: Without dead ends: 1195 [2023-11-21 19:48:36,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:48:36,990 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 95 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:36,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 415 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:48:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-11-21 19:48:37,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 775. [2023-11-21 19:48:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 2.8772609819121446) internal successors, (2227), 774 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2227 transitions. [2023-11-21 19:48:37,013 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2227 transitions. Word has length 36 [2023-11-21 19:48:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:37,014 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 2227 transitions. [2023-11-21 19:48:37,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2227 transitions. [2023-11-21 19:48:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:37,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:37,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:37,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 19:48:37,017 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:37,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:37,018 INFO L85 PathProgramCache]: Analyzing trace with hash -772853728, now seen corresponding path program 3 times [2023-11-21 19:48:37,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:37,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787775878] [2023-11-21 19:48:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:37,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787775878] [2023-11-21 19:48:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787775878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:48:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708738616] [2023-11-21 19:48:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:48:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:48:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:48:37,373 INFO L87 Difference]: Start difference. First operand 775 states and 2227 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:37,593 INFO L93 Difference]: Finished difference Result 1039 states and 2967 transitions. [2023-11-21 19:48:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:48:37,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-21 19:48:37,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:37,596 INFO L225 Difference]: With dead ends: 1039 [2023-11-21 19:48:37,596 INFO L226 Difference]: Without dead ends: 687 [2023-11-21 19:48:37,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:48:37,597 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:37,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 123 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-21 19:48:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 591. [2023-11-21 19:48:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 2.81864406779661) internal successors, (1663), 590 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1663 transitions. [2023-11-21 19:48:37,613 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1663 transitions. Word has length 36 [2023-11-21 19:48:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:37,613 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 1663 transitions. [2023-11-21 19:48:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1663 transitions. [2023-11-21 19:48:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:37,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:37,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:37,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 19:48:37,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:37,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1016392904, now seen corresponding path program 4 times [2023-11-21 19:48:37,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:37,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75382190] [2023-11-21 19:48:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:37,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:37,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:37,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75382190] [2023-11-21 19:48:37,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75382190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:37,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:37,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 19:48:37,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448691845] [2023-11-21 19:48:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:37,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:48:37,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:48:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:48:37,961 INFO L87 Difference]: Start difference. First operand 591 states and 1663 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:38,179 INFO L93 Difference]: Finished difference Result 855 states and 2403 transitions. [2023-11-21 19:48:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:48:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-21 19:48:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:38,181 INFO L225 Difference]: With dead ends: 855 [2023-11-21 19:48:38,181 INFO L226 Difference]: Without dead ends: 453 [2023-11-21 19:48:38,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:48:38,182 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:38,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 150 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:48:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-21 19:48:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2023-11-21 19:48:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 2.743362831858407) internal successors, (1240), 452 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1240 transitions. [2023-11-21 19:48:38,193 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1240 transitions. Word has length 36 [2023-11-21 19:48:38,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:38,194 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 1240 transitions. [2023-11-21 19:48:38,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1240 transitions. [2023-11-21 19:48:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:38,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:38,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:38,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 19:48:38,196 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:38,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash -447942560, now seen corresponding path program 5 times [2023-11-21 19:48:38,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:38,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400504951] [2023-11-21 19:48:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:39,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400504951] [2023-11-21 19:48:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400504951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:39,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 19:48:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723720335] [2023-11-21 19:48:39,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:39,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:48:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:48:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:48:39,418 INFO L87 Difference]: Start difference. First operand 453 states and 1240 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:39,642 INFO L93 Difference]: Finished difference Result 589 states and 1596 transitions. [2023-11-21 19:48:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:48:39,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-21 19:48:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:39,644 INFO L225 Difference]: With dead ends: 589 [2023-11-21 19:48:39,644 INFO L226 Difference]: Without dead ends: 297 [2023-11-21 19:48:39,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:48:39,645 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 54 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:39,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 227 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:48:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-21 19:48:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-11-21 19:48:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.5067567567567566) internal successors, (742), 296 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 742 transitions. [2023-11-21 19:48:39,652 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 742 transitions. Word has length 36 [2023-11-21 19:48:39,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:39,653 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 742 transitions. [2023-11-21 19:48:39,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 742 transitions. [2023-11-21 19:48:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:48:39,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:39,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:39,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 19:48:39,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:39,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash -587242366, now seen corresponding path program 6 times [2023-11-21 19:48:39,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:39,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791745520] [2023-11-21 19:48:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:39,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:48:39,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:48:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:48:39,789 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:48:39,789 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:48:39,791 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-21 19:48:39,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 13 remaining) [2023-11-21 19:48:39,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-21 19:48:39,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-21 19:48:39,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-21 19:48:39,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-21 19:48:39,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-21 19:48:39,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-21 19:48:39,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2023-11-21 19:48:39,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-11-21 19:48:39,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-21 19:48:39,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-21 19:48:39,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-21 19:48:39,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-21 19:48:39,802 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:39,808 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 19:48:39,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:48:39,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-21 19:48:39,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-21 19:48:39,899 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-21 19:48:39,912 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-21 19:48:39,913 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-21 19:48:39,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:48:39 BasicIcfg [2023-11-21 19:48:39,925 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:48:39,925 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:48:39,926 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:48:39,926 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:48:39,926 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:22" (3/4) ... [2023-11-21 19:48:39,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:48:39,929 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:48:39,930 INFO L158 Benchmark]: Toolchain (without parser) took 19258.66ms. Allocated memory was 115.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 83.4MB in the beginning and 474.3MB in the end (delta: -390.8MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-21 19:48:39,930 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:39,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 612.00ms. Allocated memory is still 115.3MB. Free memory was 82.9MB in the beginning and 58.7MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 19:48:39,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.92ms. Allocated memory is still 115.3MB. Free memory was 58.7MB in the beginning and 56.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:48:39,931 INFO L158 Benchmark]: Boogie Preprocessor took 39.01ms. Allocated memory is still 115.3MB. Free memory was 56.0MB in the beginning and 53.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:48:39,932 INFO L158 Benchmark]: RCFGBuilder took 1060.69ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 53.9MB in the beginning and 65.2MB in the end (delta: -11.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2023-11-21 19:48:39,932 INFO L158 Benchmark]: TraceAbstraction took 17470.50ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 65.2MB in the beginning and 475.3MB in the end (delta: -410.1MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-21 19:48:39,933 INFO L158 Benchmark]: Witness Printer took 3.74ms. Allocated memory is still 1.7GB. Free memory was 475.3MB in the beginning and 474.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:39,935 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 612.00ms. Allocated memory is still 115.3MB. Free memory was 82.9MB in the beginning and 58.7MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.92ms. Allocated memory is still 115.3MB. Free memory was 58.7MB in the beginning and 56.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.01ms. Allocated memory is still 115.3MB. Free memory was 56.0MB in the beginning and 53.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1060.69ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 53.9MB in the beginning and 65.2MB in the end (delta: -11.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17470.50ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 65.2MB in the beginning and 475.3MB in the end (delta: -410.1MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 3.74ms. Allocated memory is still 1.7GB. Free memory was 475.3MB in the beginning and 474.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 17. Possible FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L717] 0 int __unbuffered_p2_EAX = 0; [L719] 0 int __unbuffered_p2_EBX = 0; [L721] 0 int a = 0; [L722] 0 _Bool main$tmp_guard0; [L723] 0 _Bool main$tmp_guard1; [L725] 0 int x = 0; [L727] 0 int y = 0; [L729] 0 int z = 0; [L730] 0 _Bool z$flush_delayed; [L731] 0 int z$mem_tmp; [L732] 0 _Bool z$r_buff0_thd0; [L733] 0 _Bool z$r_buff0_thd1; [L734] 0 _Bool z$r_buff0_thd2; [L735] 0 _Bool z$r_buff0_thd3; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$read_delayed; [L741] 0 int *z$read_delayed_var; [L742] 0 int z$w_buff0; [L743] 0 _Bool z$w_buff0_used; [L744] 0 int z$w_buff1; [L745] 0 _Bool z$w_buff1_used; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L853] 0 pthread_t t260; [L854] FCALL, FORK 0 pthread_create(&t260, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L855] 0 pthread_t t261; [L856] FCALL, FORK 0 pthread_create(&t261, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L857] 0 pthread_t t262; [L858] FCALL, FORK 0 pthread_create(&t262, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L800] 3 z$w_buff1 = z$w_buff0 [L801] 3 z$w_buff0 = 1 [L802] 3 z$w_buff1_used = z$w_buff0_used [L803] 3 z$w_buff0_used = (_Bool)1 [L804] CALL 3 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L804] RET 3 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L805] 3 z$r_buff1_thd0 = z$r_buff0_thd0 [L806] 3 z$r_buff1_thd1 = z$r_buff0_thd1 [L807] 3 z$r_buff1_thd2 = z$r_buff0_thd2 [L808] 3 z$r_buff1_thd3 = z$r_buff0_thd3 [L809] 3 z$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L812] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L813] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L814] 3 z$flush_delayed = weak$$choice2 [L815] 3 z$mem_tmp = z [L816] 3 z = !z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff1) [L817] 3 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff0)) [L818] 3 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff1 : z$w_buff1)) [L819] 3 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used)) [L820] 3 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L821] 3 z$r_buff0_thd3 = weak$$choice2 ? z$r_buff0_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff0_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3)) [L822] 3 z$r_buff1_thd3 = weak$$choice2 ? z$r_buff1_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff1_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L823] 3 __unbuffered_p2_EAX = z [L824] 3 z = z$flush_delayed ? z$mem_tmp : z [L825] 3 z$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L828] 3 __unbuffered_p2_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L751] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L754] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L759] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L766] 2 x = 1 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L769] 2 y = 1 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L772] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L775] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L776] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L777] 2 z$flush_delayed = weak$$choice2 [L778] 2 z$mem_tmp = z [L779] 2 z = !z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff1) [L780] 2 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : z$w_buff0)) [L781] 2 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff1 : z$w_buff1)) [L782] 2 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used)) [L783] 2 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L784] 2 z$r_buff0_thd2 = weak$$choice2 ? z$r_buff0_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff0_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2)) [L785] 2 z$r_buff1_thd2 = weak$$choice2 ? z$r_buff1_thd2 : (!z$w_buff0_used || !z$r_buff0_thd2 && !z$w_buff1_used || !z$r_buff0_thd2 && !z$r_buff1_thd2 ? z$r_buff1_thd2 : (z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L786] 2 __unbuffered_p1_EBX = z [L787] 2 z = z$flush_delayed ? z$mem_tmp : z [L788] 2 z$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L831] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L832] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L833] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L834] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L835] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L838] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L793] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L860] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L862] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L862] RET 0 assume_abort_if_not(main$tmp_guard0) [L864] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L865] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L866] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L867] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L868] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L871] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L873] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] CALL 0 reach_error() [L17] COND FALSE 0 !(0) VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L17] 0 __assert_fail ("0", "mix010.opt.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 851]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 858]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 856]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 854]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 83 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 17.2s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1236 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1236 mSDsluCounter, 2416 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1839 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2358 IncrementalHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 577 mSDtfsCounter, 2358 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8482occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 3290 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 3671 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 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 [2023-11-21 19:48:39,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix010.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 371e0ad4620d67bc913500e97f289ec14c56f7c02bd7df3fa28779e14d33459a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:48:42,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:48:42,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 19:48:42,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:48:42,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:48:42,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:48:42,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:48:42,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:48:42,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:48:42,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:48:42,971 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:48:42,971 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:48:42,972 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:48:42,974 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:48:42,974 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:48:42,975 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:48:42,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:48:42,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:48:42,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:48:42,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:48:42,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:48:42,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:48:42,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:48:42,980 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:48:42,980 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:48:42,980 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:48:42,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:48:42,981 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:48:42,982 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:48:42,982 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:48:42,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:48:42,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:48:42,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:48:42,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:48:42,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:48:42,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:48:42,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:48:42,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:42,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:48:42,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:48:42,988 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:48:42,988 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:48:42,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:48:42,988 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:48:42,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:48:42,989 INFO L153 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_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371e0ad4620d67bc913500e97f289ec14c56f7c02bd7df3fa28779e14d33459a [2023-11-21 19:48:43,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:48:43,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:48:43,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:48:43,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:48:43,459 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:48:43,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread-wmm/mix010.opt.i [2023-11-21 19:48:46,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:48:47,113 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:48:47,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/sv-benchmarks/c/pthread-wmm/mix010.opt.i [2023-11-21 19:48:47,144 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data/76a41d17d/fb5d0742358b4c9d9dc21f7836a3ce00/FLAG6a56c9ff7 [2023-11-21 19:48:47,159 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/data/76a41d17d/fb5d0742358b4c9d9dc21f7836a3ce00 [2023-11-21 19:48:47,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:48:47,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:48:47,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:47,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:48:47,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:48:47,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:47,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7787703d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47, skipping insertion in model container [2023-11-21 19:48:47,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:47,224 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:48:47,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:47,720 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:48:47,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:47,887 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:48:47,887 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:48:47,895 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:48:47,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47 WrapperNode [2023-11-21 19:48:47,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:47,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:47,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:48:47,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:48:47,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:47,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,011 INFO L138 Inliner]: procedures = 179, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 158 [2023-11-21 19:48:48,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:48,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:48:48,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:48:48,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:48:48,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:48:48,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:48:48,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:48:48,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:48:48,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (1/1) ... [2023-11-21 19:48:48,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:48,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:48:48,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:48:48,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:48:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:48:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:48:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:48:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:48:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 19:48:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:48:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 19:48:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 19:48:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 19:48:48,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 19:48:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 19:48:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 19:48:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:48:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:48:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:48:48,175 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:48:48,437 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:48:48,440 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:48:48,848 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:48:49,241 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:48:49,241 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:48:49,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:49 BoogieIcfgContainer [2023-11-21 19:48:49,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:48:49,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:48:49,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:48:49,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:48:49,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:48:47" (1/3) ... [2023-11-21 19:48:49,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3203e5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:49, skipping insertion in model container [2023-11-21 19:48:49,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:47" (2/3) ... [2023-11-21 19:48:49,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3203e5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:49, skipping insertion in model container [2023-11-21 19:48:49,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:49" (3/3) ... [2023-11-21 19:48:49,256 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.opt.i [2023-11-21 19:48:49,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:48:49,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-21 19:48:49,277 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:48:49,374 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 19:48:49,414 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 56 transitions, 124 flow [2023-11-21 19:48:49,955 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8482 states, 8471 states have (on average 3.659662377523315) internal successors, (31001), 8481 states have internal predecessors, (31001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:49,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:48:49,985 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;@3407db93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:48:49,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 19:48:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 8482 states, 8471 states have (on average 3.659662377523315) internal successors, (31001), 8481 states have internal predecessors, (31001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:48:50,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:50,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:48:50,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:50,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 13434, now seen corresponding path program 1 times [2023-11-21 19:48:50,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:50,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192456042] [2023-11-21 19:48:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:50,064 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 [2023-11-21 19:48:50,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:50,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:50,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:50,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:48:50,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:50,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:48:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:50,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:50,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:50,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192456042] [2023-11-21 19:48:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192456042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:50,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:50,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:48:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456475155] [2023-11-21 19:48:50,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:50,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:50,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:50,464 INFO L87 Difference]: Start difference. First operand has 8482 states, 8471 states have (on average 3.659662377523315) internal successors, (31001), 8481 states have internal predecessors, (31001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:50,838 INFO L93 Difference]: Finished difference Result 7914 states and 27805 transitions. [2023-11-21 19:48:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:50,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 19:48:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:51,019 INFO L225 Difference]: With dead ends: 7914 [2023-11-21 19:48:51,020 INFO L226 Difference]: Without dead ends: 7914 [2023-11-21 19:48:51,022 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 [2023-11-21 19:48:51,026 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:51,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2023-11-21 19:48:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 7914. [2023-11-21 19:48:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7914 states, 7904 states have (on average 3.517839068825911) internal successors, (27805), 7913 states have internal predecessors, (27805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 27805 transitions. [2023-11-21 19:48:51,777 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 27805 transitions. Word has length 2 [2023-11-21 19:48:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:51,778 INFO L495 AbstractCegarLoop]: Abstraction has 7914 states and 27805 transitions. [2023-11-21 19:48:51,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 27805 transitions. [2023-11-21 19:48:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:48:51,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:51,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:48:51,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:51,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:51,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 13435, now seen corresponding path program 1 times [2023-11-21 19:48:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:51,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461633322] [2023-11-21 19:48:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:51,990 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 [2023-11-21 19:48:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:51,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:52,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:52,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:48:52,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:52,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:48:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:52,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:52,119 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461633322] [2023-11-21 19:48:52,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461633322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:52,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:52,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:48:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027905455] [2023-11-21 19:48:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:52,128 INFO L87 Difference]: Start difference. First operand 7914 states and 27805 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:52,427 INFO L93 Difference]: Finished difference Result 7913 states and 27804 transitions. [2023-11-21 19:48:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:52,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 19:48:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:52,503 INFO L225 Difference]: With dead ends: 7913 [2023-11-21 19:48:52,504 INFO L226 Difference]: Without dead ends: 7913 [2023-11-21 19:48:52,504 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 [2023-11-21 19:48:52,505 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:52,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2023-11-21 19:48:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7913. [2023-11-21 19:48:53,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7913 states, 7904 states have (on average 3.5177125506072873) internal successors, (27804), 7912 states have internal predecessors, (27804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 27804 transitions. [2023-11-21 19:48:53,283 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 27804 transitions. Word has length 2 [2023-11-21 19:48:53,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:53,284 INFO L495 AbstractCegarLoop]: Abstraction has 7913 states and 27804 transitions. [2023-11-21 19:48:53,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 27804 transitions. [2023-11-21 19:48:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:48:53,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:53,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:48:53,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:53,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:53,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:53,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash 400623491, now seen corresponding path program 1 times [2023-11-21 19:48:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:53,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597909392] [2023-11-21 19:48:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:53,494 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 [2023-11-21 19:48:53,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:53,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:53,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:53,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:48:53,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:53,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:48:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:53,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:53,628 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597909392] [2023-11-21 19:48:53,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597909392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:53,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:53,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684871646] [2023-11-21 19:48:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:53,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:53,636 INFO L87 Difference]: Start difference. First operand 7913 states and 27804 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:53,845 INFO L93 Difference]: Finished difference Result 7906 states and 27791 transitions. [2023-11-21 19:48:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:53,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2023-11-21 19:48:53,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:54,025 INFO L225 Difference]: With dead ends: 7906 [2023-11-21 19:48:54,025 INFO L226 Difference]: Without dead ends: 7906 [2023-11-21 19:48:54,026 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 [2023-11-21 19:48:54,027 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:54,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 41 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:54,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7906 states. [2023-11-21 19:48:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7906 to 7906. [2023-11-21 19:48:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7906 states, 7898 states have (on average 3.518738921245885) internal successors, (27791), 7905 states have internal predecessors, (27791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 27791 transitions. [2023-11-21 19:48:54,432 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 27791 transitions. Word has length 5 [2023-11-21 19:48:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:54,433 INFO L495 AbstractCegarLoop]: Abstraction has 7906 states and 27791 transitions. [2023-11-21 19:48:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 27791 transitions. [2023-11-21 19:48:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:48:54,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:54,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:48:54,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:54,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:54,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:54,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:54,713 INFO L85 PathProgramCache]: Analyzing trace with hash 400623492, now seen corresponding path program 1 times [2023-11-21 19:48:54,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:54,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561221798] [2023-11-21 19:48:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:54,714 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 [2023-11-21 19:48:54,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:54,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:54,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:54,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:48:54,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:54,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:48:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:54,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:54,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561221798] [2023-11-21 19:48:54,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561221798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:54,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:54,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053763232] [2023-11-21 19:48:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:54,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:54,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:54,873 INFO L87 Difference]: Start difference. First operand 7906 states and 27791 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:55,068 INFO L93 Difference]: Finished difference Result 7899 states and 27778 transitions. [2023-11-21 19:48:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:55,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2023-11-21 19:48:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:55,111 INFO L225 Difference]: With dead ends: 7899 [2023-11-21 19:48:55,111 INFO L226 Difference]: Without dead ends: 7899 [2023-11-21 19:48:55,112 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 [2023-11-21 19:48:55,114 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:55,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 42 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-11-21 19:48:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7899. [2023-11-21 19:48:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7892 states have (on average 3.51976685250887) internal successors, (27778), 7898 states have internal predecessors, (27778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 27778 transitions. [2023-11-21 19:48:55,551 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 27778 transitions. Word has length 5 [2023-11-21 19:48:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:55,552 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 27778 transitions. [2023-11-21 19:48:55,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2023-11-21 19:48:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 27778 transitions. [2023-11-21 19:48:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:48:55,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:55,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:55,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:55,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:55,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -739286489, now seen corresponding path program 1 times [2023-11-21 19:48:55,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:55,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452169110] [2023-11-21 19:48:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:55,755 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 [2023-11-21 19:48:55,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:55,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:55,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:55,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:48:55,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:55,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:48:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:55,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:55,885 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:55,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452169110] [2023-11-21 19:48:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452169110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:55,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258307217] [2023-11-21 19:48:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:55,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:55,893 INFO L87 Difference]: Start difference. First operand 7899 states and 27778 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:56,088 INFO L93 Difference]: Finished difference Result 7836 states and 27605 transitions. [2023-11-21 19:48:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:56,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-21 19:48:56,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:56,150 INFO L225 Difference]: With dead ends: 7836 [2023-11-21 19:48:56,150 INFO L226 Difference]: Without dead ends: 7836 [2023-11-21 19:48:56,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:56,152 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:56,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 47 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7836 states. [2023-11-21 19:48:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7836 to 7836. [2023-11-21 19:48:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7830 states have (on average 3.525542784163474) internal successors, (27605), 7835 states have internal predecessors, (27605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 27605 transitions. [2023-11-21 19:48:56,587 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 27605 transitions. Word has length 8 [2023-11-21 19:48:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:56,588 INFO L495 AbstractCegarLoop]: Abstraction has 7836 states and 27605 transitions. [2023-11-21 19:48:56,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 27605 transitions. [2023-11-21 19:48:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:48:56,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:56,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:56,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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)] Ended with exit code 0 [2023-11-21 19:48:56,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:56,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:56,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash -739286488, now seen corresponding path program 1 times [2023-11-21 19:48:56,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:56,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754886658] [2023-11-21 19:48:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:56,933 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 [2023-11-21 19:48:56,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:56,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:56,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:57,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:48:57,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:57,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:48:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:57,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:57,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754886658] [2023-11-21 19:48:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754886658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:57,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:57,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557893100] [2023-11-21 19:48:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:57,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:57,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:57,087 INFO L87 Difference]: Start difference. First operand 7836 states and 27605 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:57,270 INFO L93 Difference]: Finished difference Result 7773 states and 27432 transitions. [2023-11-21 19:48:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:57,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-21 19:48:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:57,304 INFO L225 Difference]: With dead ends: 7773 [2023-11-21 19:48:57,305 INFO L226 Difference]: Without dead ends: 7773 [2023-11-21 19:48:57,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:57,306 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:57,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 48 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7773 states. [2023-11-21 19:48:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7773 to 7773. [2023-11-21 19:48:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 7768 states have (on average 3.5314109165808443) internal successors, (27432), 7772 states have internal predecessors, (27432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 27432 transitions. [2023-11-21 19:48:57,663 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 27432 transitions. Word has length 8 [2023-11-21 19:48:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:57,663 INFO L495 AbstractCegarLoop]: Abstraction has 7773 states and 27432 transitions. [2023-11-21 19:48:57,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 27432 transitions. [2023-11-21 19:48:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:48:57,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:57,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:57,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:57,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:57,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:57,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash 508908917, now seen corresponding path program 1 times [2023-11-21 19:48:57,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:57,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126698982] [2023-11-21 19:48:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:57,870 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 [2023-11-21 19:48:57,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:57,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:57,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:57,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:48:57,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:58,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:58,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:58,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126698982] [2023-11-21 19:48:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126698982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:58,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:58,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:48:58,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806462466] [2023-11-21 19:48:58,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:58,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:48:58,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:58,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:48:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:58,037 INFO L87 Difference]: Start difference. First operand 7773 states and 27432 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:58,167 INFO L93 Difference]: Finished difference Result 6891 states and 24191 transitions. [2023-11-21 19:48:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:48:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 19:48:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:58,214 INFO L225 Difference]: With dead ends: 6891 [2023-11-21 19:48:58,214 INFO L226 Difference]: Without dead ends: 6765 [2023-11-21 19:48:58,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:48:58,216 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:58,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2023-11-21 19:48:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6765. [2023-11-21 19:48:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6765 states, 6763 states have (on average 3.5164867662280055) internal successors, (23782), 6764 states have internal predecessors, (23782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 23782 transitions. [2023-11-21 19:48:58,664 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 23782 transitions. Word has length 11 [2023-11-21 19:48:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:58,664 INFO L495 AbstractCegarLoop]: Abstraction has 6765 states and 23782 transitions. [2023-11-21 19:48:58,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:58,665 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 23782 transitions. [2023-11-21 19:48:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:48:58,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:58,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:58,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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)] Forceful destruction successful, exit code 0 [2023-11-21 19:48:58,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:58,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:58,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397159, now seen corresponding path program 1 times [2023-11-21 19:48:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590453084] [2023-11-21 19:48:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:58,879 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 [2023-11-21 19:48:58,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:58,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:58,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:59,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:48:59,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:59,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:59,057 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:59,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590453084] [2023-11-21 19:48:59,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590453084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:59,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:59,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:48:59,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085683487] [2023-11-21 19:48:59,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:59,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:48:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:48:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:48:59,061 INFO L87 Difference]: Start difference. First operand 6765 states and 23782 transitions. Second operand has 4 states, 4 states have (on average 4.5) 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) [2023-11-21 19:48:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:59,240 INFO L93 Difference]: Finished difference Result 4959 states and 16073 transitions. [2023-11-21 19:48:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:48:59,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) 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 [2023-11-21 19:48:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:59,266 INFO L225 Difference]: With dead ends: 4959 [2023-11-21 19:48:59,266 INFO L226 Difference]: Without dead ends: 4455 [2023-11-21 19:48:59,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:48:59,267 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:59,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 56 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2023-11-21 19:48:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 4455. [2023-11-21 19:48:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4455 states, 4453 states have (on average 3.265663597574669) internal successors, (14542), 4454 states have internal predecessors, (14542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:48:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 14542 transitions. [2023-11-21 19:48:59,509 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 14542 transitions. Word has length 18 [2023-11-21 19:48:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:59,509 INFO L495 AbstractCegarLoop]: Abstraction has 4455 states and 14542 transitions. [2023-11-21 19:48:59,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) 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) [2023-11-21 19:48:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 14542 transitions. [2023-11-21 19:48:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 19:48:59,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:59,515 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] [2023-11-21 19:48:59,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:59,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:59,718 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:48:59,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 883621132, now seen corresponding path program 1 times [2023-11-21 19:48:59,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561794053] [2023-11-21 19:48:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:59,720 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 [2023-11-21 19:48:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:59,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:48:59,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:48:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:59,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:48:59,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:48:59,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:59,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:59,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561794053] [2023-11-21 19:48:59,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561794053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:59,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:59,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:48:59,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500466206] [2023-11-21 19:48:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:59,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:48:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:48:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:48:59,924 INFO L87 Difference]: Start difference. First operand 4455 states and 14542 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 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) [2023-11-21 19:49:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:00,110 INFO L93 Difference]: Finished difference Result 2395 states and 7208 transitions. [2023-11-21 19:49:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:49:00,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 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 [2023-11-21 19:49:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:00,120 INFO L225 Difference]: With dead ends: 2395 [2023-11-21 19:49:00,120 INFO L226 Difference]: Without dead ends: 2101 [2023-11-21 19:49:00,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:49:00,123 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 117 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:00,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 88 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2023-11-21 19:49:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2101. [2023-11-21 19:49:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2099 states have (on average 3.0028585040495472) internal successors, (6303), 2100 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 6303 transitions. [2023-11-21 19:49:00,189 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 6303 transitions. Word has length 23 [2023-11-21 19:49:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:00,190 INFO L495 AbstractCegarLoop]: Abstraction has 2101 states and 6303 transitions. [2023-11-21 19:49:00,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 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) [2023-11-21 19:49:00,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 6303 transitions. [2023-11-21 19:49:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:49:00,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:00,196 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, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:00,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:49:00,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:49:00,399 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:49:00,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1408106840, now seen corresponding path program 1 times [2023-11-21 19:49:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:49:00,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910132385] [2023-11-21 19:49:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:00,400 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 [2023-11-21 19:49:00,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:49:00,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:49:00,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:49:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:00,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:49:00,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:00,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:00,655 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:49:00,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910132385] [2023-11-21 19:49:00,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910132385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:00,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:00,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:49:00,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183331584] [2023-11-21 19:49:00,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:00,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:49:00,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:49:00,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:49:00,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:49:00,658 INFO L87 Difference]: Start difference. First operand 2101 states and 6303 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2023-11-21 19:49:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:00,936 INFO L93 Difference]: Finished difference Result 1389 states and 4155 transitions. [2023-11-21 19:49:00,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:49:00,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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 29 [2023-11-21 19:49:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:00,942 INFO L225 Difference]: With dead ends: 1389 [2023-11-21 19:49:00,942 INFO L226 Difference]: Without dead ends: 1309 [2023-11-21 19:49:00,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:49:00,943 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 138 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:00,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 142 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:49:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-11-21 19:49:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1309. [2023-11-21 19:49:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1307 states have (on average 3.0045906656465187) internal successors, (3927), 1308 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 3927 transitions. [2023-11-21 19:49:00,976 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 3927 transitions. Word has length 29 [2023-11-21 19:49:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:00,976 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 3927 transitions. [2023-11-21 19:49:00,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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) [2023-11-21 19:49:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 3927 transitions. [2023-11-21 19:49:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:49:00,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:00,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:00,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:49:01,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:49:01,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:49:01,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1020238570, now seen corresponding path program 1 times [2023-11-21 19:49:01,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:49:01,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694514050] [2023-11-21 19:49:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:01,187 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 [2023-11-21 19:49:01,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:49:01,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:49:01,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74cd9-13cc-4078-bf83-603dddecf51c/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:49:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:01,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 19:49:01,415 INFO L285 TraceCheckSpWp]: Computing forward predicates...