/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:00:12,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:00:12,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:00:12,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:00:12,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:00:12,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:00:12,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:00:12,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:00:12,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:00:12,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:00:12,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:00:12,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:00:12,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:00:12,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:00:12,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:00:12,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:00:12,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 16:00:12,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:00:12,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:00:12,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:00:12,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:00:12,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:00:12,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:00:12,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:00:12,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:00:12,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:00:12,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:00:12,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:00:12,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:00:12,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:00:12,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:00:12,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:00:12,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:00:12,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:00:12,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:00:12,770 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:00:12,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:00:12,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:00:12,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:00:12,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:00:12,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:00:12,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:00:12,771 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:00:12,772 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:00:12,772 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:00:12,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:00:12,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:00:12,772 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:00:12,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:00:12,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:00:12,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:00:12,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:00:12,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:00:12,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:00:12,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:00:12,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:00:12,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:00:12,774 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:00:12,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:00:12,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:00:12,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:00:12,775 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:00:13,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:00:13,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:00:13,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:00:13,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:00:13,208 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:00:13,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2021-10-07 16:00:13,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bdc60a95/23ee3f8d0d7f441ca01425835fce2b09/FLAG1f6249cda [2021-10-07 16:00:14,009 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:00:14,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2021-10-07 16:00:14,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bdc60a95/23ee3f8d0d7f441ca01425835fce2b09/FLAG1f6249cda [2021-10-07 16:00:14,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bdc60a95/23ee3f8d0d7f441ca01425835fce2b09 [2021-10-07 16:00:14,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:00:14,066 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:00:14,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:00:14,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:00:14,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:00:14,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276df968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14, skipping insertion in model container [2021-10-07 16:00:14,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:00:14,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:00:14,311 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c[2129,2142] [2021-10-07 16:00:14,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:14,330 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:00:14,353 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c[2129,2142] [2021-10-07 16:00:14,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:14,373 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:00:14,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14 WrapperNode [2021-10-07 16:00:14,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:00:14,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:00:14,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:00:14,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:00:14,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:00:14,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:00:14,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:00:14,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:00:14,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:00:14,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:00:14,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:00:14,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:00:14,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (1/1) ... [2021-10-07 16:00:14,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:00:14,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:00:14,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:00:14,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:00:14,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:00:14,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:00:14,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:00:14,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:00:14,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:00:14,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:00:14,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:00:14,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:00:14,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:00:14,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:00:14,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:00:14,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:00:14,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:00:14,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:00:15,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:00:15,137 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 16:00:15,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:00:15 BoogieIcfgContainer [2021-10-07 16:00:15,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:00:15,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:00:15,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:00:15,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:00:15,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:00:14" (1/3) ... [2021-10-07 16:00:15,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8ad650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:00:15, skipping insertion in model container [2021-10-07 16:00:15,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:14" (2/3) ... [2021-10-07 16:00:15,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8ad650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:00:15, skipping insertion in model container [2021-10-07 16:00:15,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:00:15" (3/3) ... [2021-10-07 16:00:15,149 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2021-10-07 16:00:15,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:00:15,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 16:00:15,156 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:00:15,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,191 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,192 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,193 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,194 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,194 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,194 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,194 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,206 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,207 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,207 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,207 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:15,223 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:00:15,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:00:15,284 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:00:15,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 16:00:15,303 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:00:15,318 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 90 transitions, 196 flow [2021-10-07 16:00:15,322 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 90 transitions, 196 flow [2021-10-07 16:00:15,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 90 transitions, 196 flow [2021-10-07 16:00:15,377 INFO L129 PetriNetUnfolder]: 7/88 cut-off events. [2021-10-07 16:00:15,378 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:00:15,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 7/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2021-10-07 16:00:15,385 INFO L116 LiptonReduction]: Number of co-enabled transitions 460 [2021-10-07 16:00:24,333 INFO L131 LiptonReduction]: Checked pairs total: 1017 [2021-10-07 16:00:24,334 INFO L133 LiptonReduction]: Total number of compositions: 87 [2021-10-07 16:00:24,344 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-07 16:00:24,358 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 16:00:24,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:24,378 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 16:00:24,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:24,387 INFO L82 PathProgramCache]: Analyzing trace with hash 361, now seen corresponding path program 1 times [2021-10-07 16:00:24,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:24,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715773597] [2021-10-07 16:00:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:24,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:24,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:24,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:24,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:00:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:24,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 16:00:24,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:24,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:24,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:24,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715773597] [2021-10-07 16:00:24,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715773597] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:24,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:24,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 16:00:24,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978176445] [2021-10-07 16:00:24,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 16:00:24,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:24,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 16:00:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:00:24,530 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:24,549 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-07 16:00:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 16:00:24,551 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 16:00:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:24,567 INFO L225 Difference]: With dead ends: 64 [2021-10-07 16:00:24,567 INFO L226 Difference]: Without dead ends: 64 [2021-10-07 16:00:24,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:00:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-07 16:00:24,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-07 16:00:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-07 16:00:24,613 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-07 16:00:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:24,613 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-07 16:00:24,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-07 16:00:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:00:24,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:24,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:00:24,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 16:00:24,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:24,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash 353713, now seen corresponding path program 1 times [2021-10-07 16:00:24,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:24,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759928551] [2021-10-07 16:00:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:24,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:24,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:24,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:24,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:00:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:24,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:00:24,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:25,089 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:00:25,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-07 16:00:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:25,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:25,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:25,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759928551] [2021-10-07 16:00:25,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759928551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:25,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:25,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:00:25,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876015711] [2021-10-07 16:00:25,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:00:25,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:00:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:00:25,570 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:25,603 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-07 16:00:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:25,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:00:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:25,606 INFO L225 Difference]: With dead ends: 58 [2021-10-07 16:00:25,606 INFO L226 Difference]: Without dead ends: 58 [2021-10-07 16:00:25,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:00:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-07 16:00:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-07 16:00:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-07 16:00:25,617 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-07 16:00:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:25,619 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-07 16:00:25,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-07 16:00:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:00:25,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:25,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:00:25,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:25,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:25,834 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:25,835 INFO L82 PathProgramCache]: Analyzing trace with hash 353714, now seen corresponding path program 1 times [2021-10-07 16:00:25,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:25,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482020857] [2021-10-07 16:00:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:25,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:25,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:25,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:00:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:25,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:00:25,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:26,010 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:00:26,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-07 16:00:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:26,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:26,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:26,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482020857] [2021-10-07 16:00:26,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482020857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:26,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:26,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:00:26,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035590607] [2021-10-07 16:00:26,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:00:26,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:00:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:26,134 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:26,159 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-07 16:00:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:00:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:26,162 INFO L225 Difference]: With dead ends: 52 [2021-10-07 16:00:26,162 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:00:26,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:00:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 16:00:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-07 16:00:26,170 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-07 16:00:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:26,170 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-07 16:00:26,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-07 16:00:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:00:26,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:26,172 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:00:26,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:26,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:26,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:26,389 INFO L82 PathProgramCache]: Analyzing trace with hash 339927922, now seen corresponding path program 1 times [2021-10-07 16:00:26,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:26,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049304538] [2021-10-07 16:00:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:26,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:26,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:26,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:00:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:26,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:00:26,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:26,552 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-07 16:00:26,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 50 [2021-10-07 16:00:26,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 70 [2021-10-07 16:00:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:26,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:26,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:26,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049304538] [2021-10-07 16:00:26,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049304538] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:26,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:26,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:00:26,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104837440] [2021-10-07 16:00:26,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:00:26,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:00:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:26,822 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:26,840 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-07 16:00:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:00:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:26,842 INFO L225 Difference]: With dead ends: 43 [2021-10-07 16:00:26,842 INFO L226 Difference]: Without dead ends: 43 [2021-10-07 16:00:26,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-07 16:00:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-07 16:00:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-07 16:00:26,848 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-07 16:00:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:26,848 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-07 16:00:26,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-07 16:00:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:00:26,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:26,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:00:26,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:27,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:27,051 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:27,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:27,052 INFO L82 PathProgramCache]: Analyzing trace with hash 339927923, now seen corresponding path program 1 times [2021-10-07 16:00:27,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:27,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355265258] [2021-10-07 16:00:27,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:27,055 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:27,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:27,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:00:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:27,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:00:27,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:27,222 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:00:27,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 110 [2021-10-07 16:00:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:30,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:30,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:30,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355265258] [2021-10-07 16:00:30,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355265258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:30,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:30,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:00:30,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063945918] [2021-10-07 16:00:30,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:00:30,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:00:30,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:30,206 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:30,230 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-07 16:00:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:30,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:00:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:30,231 INFO L225 Difference]: With dead ends: 34 [2021-10-07 16:00:30,232 INFO L226 Difference]: Without dead ends: 34 [2021-10-07 16:00:30,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-07 16:00:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-07 16:00:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-07 16:00:30,236 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-07 16:00:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:30,236 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-07 16:00:30,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-07 16:00:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:00:30,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:30,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:00:30,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-07 16:00:30,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:30,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:30,450 INFO L82 PathProgramCache]: Analyzing trace with hash -2115163931, now seen corresponding path program 1 times [2021-10-07 16:00:30,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:30,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653798577] [2021-10-07 16:00:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:30,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:30,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:30,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:30,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:00:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:30,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:00:30,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:30,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:30,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:30,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653798577] [2021-10-07 16:00:30,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653798577] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:30,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:30,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 16:00:30,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231064657] [2021-10-07 16:00:30,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:00:30,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:00:30,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:00:30,604 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) 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) [2021-10-07 16:00:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:30,620 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2021-10-07 16:00:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:30,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) 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 [2021-10-07 16:00:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:30,623 INFO L225 Difference]: With dead ends: 36 [2021-10-07 16:00:30,623 INFO L226 Difference]: Without dead ends: 36 [2021-10-07 16:00:30,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:00:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-07 16:00:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-07 16:00:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 77 transitions. [2021-10-07 16:00:30,629 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 77 transitions. Word has length 11 [2021-10-07 16:00:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:30,629 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 77 transitions. [2021-10-07 16:00:30,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) 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) [2021-10-07 16:00:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 77 transitions. [2021-10-07 16:00:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:00:30,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:30,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:00:30,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:30,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:30,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:00:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash -307816282, now seen corresponding path program 1 times [2021-10-07 16:00:30,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:30,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547820249] [2021-10-07 16:00:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:30,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:30,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:30,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:00:30,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:00:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 16:00:30,950 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-07 16:00:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 16:00:31,076 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-07 16:00:31,076 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-07 16:00:31,077 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:00:31,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:00:31,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:00:31,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:00:31,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:00:31,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:00:31,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:00:31,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:00:31,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:00:31,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:00:31,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:00:31,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:00:31,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:31,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:00:31,307 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:00:31,307 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:00:31,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:00:31 BasicIcfg [2021-10-07 16:00:31,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:00:31,368 INFO L168 Benchmark]: Toolchain (without parser) took 17307.47 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 127.0 MB in the beginning and 95.4 MB in the end (delta: 31.6 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:00:31,369 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 173.0 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:00:31,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.33 ms. Allocated memory is still 173.0 MB. Free memory was 126.5 MB in the beginning and 148.4 MB in the end (delta: -21.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:00:31,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.04 ms. Allocated memory is still 173.0 MB. Free memory was 148.2 MB in the beginning and 146.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:00:31,373 INFO L168 Benchmark]: Boogie Preprocessor took 94.35 ms. Allocated memory is still 173.0 MB. Free memory was 146.7 MB in the beginning and 156.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 1.8 MB. Max. memory is 8.0 GB. [2021-10-07 16:00:31,374 INFO L168 Benchmark]: RCFGBuilder took 622.99 ms. Allocated memory is still 173.0 MB. Free memory was 156.4 MB in the beginning and 141.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:00:31,382 INFO L168 Benchmark]: TraceAbstraction took 16224.84 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 141.1 MB in the beginning and 95.4 MB in the end (delta: 45.7 MB). Peak memory consumption was 81.9 MB. Max. memory is 8.0 GB. [2021-10-07 16:00:31,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 173.0 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 306.33 ms. Allocated memory is still 173.0 MB. Free memory was 126.5 MB in the beginning and 148.4 MB in the end (delta: -21.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.04 ms. Allocated memory is still 173.0 MB. Free memory was 148.2 MB in the beginning and 146.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.35 ms. Allocated memory is still 173.0 MB. Free memory was 146.7 MB in the beginning and 156.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 1.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 622.99 ms. Allocated memory is still 173.0 MB. Free memory was 156.4 MB in the beginning and 141.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16224.84 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 141.1 MB in the beginning and 95.4 MB in the end (delta: 45.7 MB). Peak memory consumption was 81.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9012.4ms, 90 PlacesBefore, 32 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 460 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 87 TotalNumberOfCompositions, 1017 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 705, positive: 664, positive conditional: 0, positive unconditional: 664, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 294, positive: 284, positive conditional: 0, positive unconditional: 284, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 294, positive: 281, positive conditional: 0, positive unconditional: 281, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 135, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 114, negative conditional: 0, negative unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 705, positive: 380, positive conditional: 0, positive unconditional: 380, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 294, unknown conditional: 0, unknown unconditional: 294] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 83]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 83. Possible FailurePath: [L38] 0 int s, t, m, T, S; [L67] 0 pthread_t t1, t2; [L69] 0 s = __VERIFIER_nondet_int() [L70] 0 t = __VERIFIER_nondet_int() [L71] 0 S = s [L72] 0 T = t [L35] COND FALSE 0 !(!cond) [L77] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [m=0, S=2147483647, s=2147483647, T=1, t=1] [L78] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [m=0, s=2147483647, S=2147483647, T=1, t=1] [L79] 0 \read(t1) VAL [m=0, s=2147483647, S=2147483647, t=1, T=1] [L54] COND TRUE 2 t > 0 [L56] 2 s++ VAL [m=0, S=2147483647, s=-2147483648, t=1, T=1] [L59] 2 t-- VAL [m=0, S=2147483647, s=-2147483648, t=0, T=1] [L54] COND FALSE 2 !(t > 0) [L63] 2 return 0; [L41] COND FALSE 1 !(s > 0 || t > 0) [L50] 1 return 0; [L79] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, \result={0:0}, m=0, S=2147483647, s=-2147483648, T=1, t=0] [L80] 0 \read(t2) VAL [\result={0:0}, \result={0:0}, m=0, S=2147483647, s=-2147483648, t=0, T=1] [L80] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, m=0, s=-2147483648, S=2147483647, T=1, t=0] [L35] COND FALSE 0 !(!cond) [L83] 0 reach_error() VAL [\result={0:0}, \result={0:0}, m=0, S=2147483647, s=-2147483648, t=0, T=1] - UnprovableResult [Line: 77]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 16031.3ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 19.1ms, AutomataDifference: 203.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9073.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 85 SDtfs, 71 SDslu, 6 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 66.2ms SsaConstructionTime, 183.0ms SatisfiabilityAnalysisTime, 4458.2ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 44 ConstructedInterpolants, 8 QuantifiedInterpolants, 544 SizeOfPredicates, 15 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 [2021-10-07 16:00:31,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...