/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:30:05,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:30:05,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:30:05,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:30:05,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:30:05,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:30:05,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:30:05,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:30:05,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:30:05,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:30:05,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:30:05,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:30:05,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:30:05,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:30:05,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:30:05,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:30:05,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:30:05,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:30:05,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:30:05,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:30:05,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:30:05,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:30:05,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:30:05,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:30:05,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:30:05,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:30:05,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:30:05,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:30:05,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:30:05,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:30:05,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:30:05,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:30:05,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:30:05,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:30:05,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:30:05,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:30:05,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:30:05,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:30:05,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:30:05,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:30:05,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:30:05,396 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:30:05,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:30:05,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:30:05,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:30:05,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:30:05,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:30:05,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:30:05,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:30:05,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:30:05,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:30:05,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:30:05,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:30:05,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:30:05,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:30:05,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:30:05,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:30:05,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:30:05,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:30:05,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:30:05,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:30:05,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:30:05,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:30:05,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:30:05,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:30:05,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:30:05,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:30:05,844 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:30:05,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i [2021-01-06 23:30:05,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4eb6b2fd1/2011882e2a6c4ace9f3581f0b4fa6c3d/FLAG3b492b926 [2021-01-06 23:30:06,785 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:30:06,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i [2021-01-06 23:30:06,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4eb6b2fd1/2011882e2a6c4ace9f3581f0b4fa6c3d/FLAG3b492b926 [2021-01-06 23:30:06,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4eb6b2fd1/2011882e2a6c4ace9f3581f0b4fa6c3d [2021-01-06 23:30:06,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:30:06,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:30:06,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:30:06,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:30:06,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:30:07,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:30:06" (1/1) ... [2021-01-06 23:30:07,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da1595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07, skipping insertion in model container [2021-01-06 23:30:07,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:30:06" (1/1) ... [2021-01-06 23:30:07,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:30:07,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:30:07,227 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:30:07,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:30:07,510 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:30:07,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:30:07,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:30:07,759 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:30:07,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07 WrapperNode [2021-01-06 23:30:07,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:30:07,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:30:07,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:30:07,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:30:07,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:30:07,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:30:07,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:30:07,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:30:07,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... [2021-01-06 23:30:07,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:30:07,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:30:07,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:30:07,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:30:07,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:30:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:30:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:30:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:30:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:30:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:30:07,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:30:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:30:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:30:07,967 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:30:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:30:07,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:30:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:30:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:30:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:30:07,974 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:30:08,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:30:08,391 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:30:08,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:30:08 BoogieIcfgContainer [2021-01-06 23:30:08,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:30:08,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:30:08,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:30:08,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:30:08,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:30:06" (1/3) ... [2021-01-06 23:30:08,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d1d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:30:08, skipping insertion in model container [2021-01-06 23:30:08,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:07" (2/3) ... [2021-01-06 23:30:08,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d1d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:30:08, skipping insertion in model container [2021-01-06 23:30:08,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:30:08" (3/3) ... [2021-01-06 23:30:08,420 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2021-01-06 23:30:08,436 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:30:08,436 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:30:08,448 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:30:08,452 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:30:08,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,520 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,536 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:08,549 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:30:08,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:30:08,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:30:08,634 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:30:08,634 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:30:08,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:30:08,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:30:08,634 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:30:08,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:30:08,635 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:30:08,659 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:30:08,663 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:30:08,668 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:30:08,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-01-06 23:30:08,777 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-01-06 23:30:08,777 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:30:08,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-01-06 23:30:08,807 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-01-06 23:30:11,452 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:30:11,732 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:30:11,816 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2021-01-06 23:30:11,817 INFO L133 LiptonReduction]: Total number of compositions: 59 [2021-01-06 23:30:11,824 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-01-06 23:30:11,856 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-01-06 23:30:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-01-06 23:30:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:30:11,866 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:11,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:11,867 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:11,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:11,874 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2021-01-06 23:30:11,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:11,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989439630] [2021-01-06 23:30:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:12,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989439630] [2021-01-06 23:30:12,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:12,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:30:12,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282868487] [2021-01-06 23:30:12,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:30:12,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:12,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:30:12,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:30:12,168 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-01-06 23:30:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:12,224 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-01-06 23:30:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:30:12,226 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:30:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:12,245 INFO L225 Difference]: With dead ends: 362 [2021-01-06 23:30:12,245 INFO L226 Difference]: Without dead ends: 298 [2021-01-06 23:30:12,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:30:12,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-01-06 23:30:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-01-06 23:30:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-01-06 23:30:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-01-06 23:30:12,375 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-01-06 23:30:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:12,376 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-01-06 23:30:12,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:30:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-01-06 23:30:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:30:12,378 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:12,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:12,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:30:12,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2021-01-06 23:30:12,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:12,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121964629] [2021-01-06 23:30:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:12,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121964629] [2021-01-06 23:30:12,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:12,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:30:12,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918030586] [2021-01-06 23:30:12,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:30:12,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:12,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:30:12,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:30:12,601 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-01-06 23:30:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:12,667 INFO L93 Difference]: Finished difference Result 545 states and 1490 transitions. [2021-01-06 23:30:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:12,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:30:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:12,674 INFO L225 Difference]: With dead ends: 545 [2021-01-06 23:30:12,674 INFO L226 Difference]: Without dead ends: 422 [2021-01-06 23:30:12,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-01-06 23:30:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 352. [2021-01-06 23:30:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2021-01-06 23:30:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 987 transitions. [2021-01-06 23:30:12,708 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 987 transitions. Word has length 9 [2021-01-06 23:30:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:12,709 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 987 transitions. [2021-01-06 23:30:12,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:30:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 987 transitions. [2021-01-06 23:30:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:30:12,711 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:12,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:12,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:30:12,712 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2021-01-06 23:30:12,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:12,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791730763] [2021-01-06 23:30:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:12,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791730763] [2021-01-06 23:30:12,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:12,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:12,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388594594] [2021-01-06 23:30:12,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:12,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:12,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:12,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:12,830 INFO L87 Difference]: Start difference. First operand 352 states and 987 transitions. Second operand 5 states. [2021-01-06 23:30:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:12,923 INFO L93 Difference]: Finished difference Result 448 states and 1164 transitions. [2021-01-06 23:30:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:30:12,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:30:12,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:12,927 INFO L225 Difference]: With dead ends: 448 [2021-01-06 23:30:12,928 INFO L226 Difference]: Without dead ends: 360 [2021-01-06 23:30:12,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:30:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-01-06 23:30:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 302. [2021-01-06 23:30:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2021-01-06 23:30:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 814 transitions. [2021-01-06 23:30:12,953 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 814 transitions. Word has length 10 [2021-01-06 23:30:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:12,954 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 814 transitions. [2021-01-06 23:30:12,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 814 transitions. [2021-01-06 23:30:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:30:12,962 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:12,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:12,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:30:12,963 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:12,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:12,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1610224715, now seen corresponding path program 1 times [2021-01-06 23:30:12,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:12,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514553628] [2021-01-06 23:30:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:13,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514553628] [2021-01-06 23:30:13,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:13,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:13,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893331107] [2021-01-06 23:30:13,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:13,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:13,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:13,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:13,116 INFO L87 Difference]: Start difference. First operand 302 states and 814 transitions. Second operand 5 states. [2021-01-06 23:30:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:13,178 INFO L93 Difference]: Finished difference Result 382 states and 984 transitions. [2021-01-06 23:30:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:30:13,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 23:30:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:13,181 INFO L225 Difference]: With dead ends: 382 [2021-01-06 23:30:13,182 INFO L226 Difference]: Without dead ends: 338 [2021-01-06 23:30:13,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:30:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-01-06 23:30:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 286. [2021-01-06 23:30:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2021-01-06 23:30:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 762 transitions. [2021-01-06 23:30:13,196 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 762 transitions. Word has length 11 [2021-01-06 23:30:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:13,196 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 762 transitions. [2021-01-06 23:30:13,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 762 transitions. [2021-01-06 23:30:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:30:13,197 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:13,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:13,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:30:13,198 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:13,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:13,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2021-01-06 23:30:13,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:13,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068618672] [2021-01-06 23:30:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:13,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068618672] [2021-01-06 23:30:13,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:13,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:30:13,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703969397] [2021-01-06 23:30:13,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:30:13,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:13,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:30:13,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:30:13,264 INFO L87 Difference]: Start difference. First operand 286 states and 762 transitions. Second operand 4 states. [2021-01-06 23:30:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:13,288 INFO L93 Difference]: Finished difference Result 298 states and 776 transitions. [2021-01-06 23:30:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:13,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 23:30:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:13,291 INFO L225 Difference]: With dead ends: 298 [2021-01-06 23:30:13,291 INFO L226 Difference]: Without dead ends: 274 [2021-01-06 23:30:13,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-01-06 23:30:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 250. [2021-01-06 23:30:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-01-06 23:30:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 666 transitions. [2021-01-06 23:30:13,303 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 666 transitions. Word has length 12 [2021-01-06 23:30:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:13,303 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 666 transitions. [2021-01-06 23:30:13,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:30:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 666 transitions. [2021-01-06 23:30:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:30:13,304 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:13,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:13,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:30:13,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:13,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1069072958, now seen corresponding path program 1 times [2021-01-06 23:30:13,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:13,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393767840] [2021-01-06 23:30:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:13,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393767840] [2021-01-06 23:30:13,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:13,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:13,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701115099] [2021-01-06 23:30:13,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:13,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:13,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:13,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:13,372 INFO L87 Difference]: Start difference. First operand 250 states and 666 transitions. Second operand 5 states. [2021-01-06 23:30:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:13,445 INFO L93 Difference]: Finished difference Result 304 states and 775 transitions. [2021-01-06 23:30:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:30:13,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:30:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:13,448 INFO L225 Difference]: With dead ends: 304 [2021-01-06 23:30:13,448 INFO L226 Difference]: Without dead ends: 134 [2021-01-06 23:30:13,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:30:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-01-06 23:30:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-01-06 23:30:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-01-06 23:30:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 312 transitions. [2021-01-06 23:30:13,456 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 312 transitions. Word has length 12 [2021-01-06 23:30:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:13,456 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 312 transitions. [2021-01-06 23:30:13,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 312 transitions. [2021-01-06 23:30:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:30:13,458 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:13,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:13,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:30:13,458 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1136607611, now seen corresponding path program 1 times [2021-01-06 23:30:13,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:13,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526205547] [2021-01-06 23:30:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:13,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526205547] [2021-01-06 23:30:13,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:13,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:30:13,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772976655] [2021-01-06 23:30:13,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:30:13,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:13,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:30:13,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:30:13,604 INFO L87 Difference]: Start difference. First operand 134 states and 312 transitions. Second operand 6 states. [2021-01-06 23:30:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:13,649 INFO L93 Difference]: Finished difference Result 162 states and 372 transitions. [2021-01-06 23:30:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:30:13,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 23:30:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:13,651 INFO L225 Difference]: With dead ends: 162 [2021-01-06 23:30:13,652 INFO L226 Difference]: Without dead ends: 90 [2021-01-06 23:30:13,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:30:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-06 23:30:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-01-06 23:30:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-06 23:30:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 194 transitions. [2021-01-06 23:30:13,658 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 194 transitions. Word has length 14 [2021-01-06 23:30:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:13,658 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 194 transitions. [2021-01-06 23:30:13,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:30:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 194 transitions. [2021-01-06 23:30:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:30:13,659 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:13,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:13,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:30:13,660 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:13,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:13,660 INFO L82 PathProgramCache]: Analyzing trace with hash 559846421, now seen corresponding path program 1 times [2021-01-06 23:30:13,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:13,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341212648] [2021-01-06 23:30:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:13,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341212648] [2021-01-06 23:30:13,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:13,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:13,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670891821] [2021-01-06 23:30:13,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:13,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:13,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:13,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:13,722 INFO L87 Difference]: Start difference. First operand 90 states and 194 transitions. Second operand 5 states. [2021-01-06 23:30:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:13,745 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2021-01-06 23:30:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:13,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:30:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:13,746 INFO L225 Difference]: With dead ends: 82 [2021-01-06 23:30:13,746 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:30:13,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:30:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:30:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:30:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:30:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:30:13,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-01-06 23:30:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:13,748 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:30:13,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:30:13,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:30:13,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:30:13,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:30:13 BasicIcfg [2021-01-06 23:30:13,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:30:13,753 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:30:13,753 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:30:13,754 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:30:13,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:30:08" (3/4) ... [2021-01-06 23:30:13,758 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:30:13,765 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:30:13,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:30:13,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:30:13,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:30:13,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:30:13,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:30:13,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:30:13,821 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe000_tso.opt.i-witness.graphml [2021-01-06 23:30:13,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:30:13,823 INFO L168 Benchmark]: Toolchain (without parser) took 6833.81 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 124.6 MB in the beginning and 162.6 MB in the end (delta: -38.0 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:13,823 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:30:13,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 127.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:13,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:13,826 INFO L168 Benchmark]: Boogie Preprocessor took 32.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 123.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:13,827 INFO L168 Benchmark]: RCFGBuilder took 548.70 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 101.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:13,830 INFO L168 Benchmark]: TraceAbstraction took 5351.08 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 101.0 MB in the beginning and 165.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:13,831 INFO L168 Benchmark]: Witness Printer took 68.23 ms. Allocated memory is still 229.6 MB. Free memory was 165.2 MB in the beginning and 162.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:13,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 766.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 127.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 123.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 548.70 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 101.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5351.08 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 101.0 MB in the beginning and 165.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * Witness Printer took 68.23 ms. Allocated memory is still 229.6 MB. Free memory was 165.2 MB in the beginning and 162.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 743 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 184 SDtfs, 187 SDslu, 261 SDs, 0 SdLazy, 109 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 204 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 4967 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 proved your program to be correct! Received shutdown request...