/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/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:30:47,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:30:47,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:30:47,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:30:47,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:30:47,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:30:47,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:30:47,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:30:47,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:30:47,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:30:47,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:30:47,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:30:47,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:30:47,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:30:47,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:30:47,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:30:47,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:30:47,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:30:47,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:30:47,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:30:47,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:30:47,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:30:47,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:30:47,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:30:47,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:30:47,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:30:47,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:30:47,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:30:47,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:30:47,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:30:47,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:30:47,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:30:47,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:30:47,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:30:47,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:30:47,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:30:47,822 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 23:30:47,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:30:47,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:30:47,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:30:47,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:30:47,880 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:30:47,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:30:47,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:30:47,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:30:47,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:30:47,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:30:47,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:30:47,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:30:47,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:30:47,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:30:47,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:30:47,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:30:47,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:30:47,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:30:47,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:30:47,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:30:47,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:30:47,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:30:47,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:30:47,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:30:47,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:30:47,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:30:48,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:30:48,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:30:48,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:30:48,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:30:48,359 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:30:48,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i [2021-01-06 23:30:48,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d4502d12/7a97e83c287f411c8b3d04df77d520a3/FLAGca8ddfdb4 [2021-01-06 23:30:49,250 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:30:49,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i [2021-01-06 23:30:49,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d4502d12/7a97e83c287f411c8b3d04df77d520a3/FLAGca8ddfdb4 [2021-01-06 23:30:49,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d4502d12/7a97e83c287f411c8b3d04df77d520a3 [2021-01-06 23:30:49,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:30:49,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:30:49,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:30:49,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:30:49,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:30:49,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:30:49" (1/1) ... [2021-01-06 23:30:49,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff41df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:49, skipping insertion in model container [2021-01-06 23:30:49,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:30:49" (1/1) ... [2021-01-06 23:30:49,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:30:49,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:30:49,772 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/safe002_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[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:30:50,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:30:50,024 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:30:50,044 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:30:50,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:30:50,217 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:30:50,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50 WrapperNode [2021-01-06 23:30:50,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:30:50,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:30:50,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:30:50,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:30:50,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:30:50,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:30:50,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:30:50,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:30:50,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (1/1) ... [2021-01-06 23:30:50,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:30:50,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:30:50,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:30:50,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:30:50,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (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 23:30:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:30:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:30:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:30:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:30:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:30:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:30:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:30:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:30:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:30:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:30:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:30:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:30:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:30:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:30:50,407 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 23:30:50,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:30:50,927 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:30:50,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:30:50 BoogieIcfgContainer [2021-01-06 23:30:50,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:30:50,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:30:50,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:30:50,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:30:50,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:30:49" (1/3) ... [2021-01-06 23:30:50,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f0c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:30:50, skipping insertion in model container [2021-01-06 23:30:50,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:30:50" (2/3) ... [2021-01-06 23:30:50,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f0c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:30:50, skipping insertion in model container [2021-01-06 23:30:50,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:30:50" (3/3) ... [2021-01-06 23:30:50,940 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2021-01-06 23:30:50,947 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:30:50,948 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:30:50,954 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:30:50,955 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:30:50,993 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,994 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,994 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,995 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,995 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:50,999 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,000 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,000 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,000 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,001 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,001 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,004 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,005 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,005 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,005 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,011 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,011 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,014 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:30:51,017 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:30:51,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:30:51,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:30:51,064 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:30:51,065 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:30:51,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:30:51,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:30:51,065 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:30:51,065 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:30:51,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:30:51,079 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:30:51,082 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:30:51,085 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:30:51,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-01-06 23:30:51,136 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-01-06 23:30:51,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:30:51,141 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 23:30:51,145 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-01-06 23:30:54,196 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:30:54,532 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:30:54,642 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-01-06 23:30:54,649 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2021-01-06 23:30:54,649 INFO L133 LiptonReduction]: Total number of compositions: 59 [2021-01-06 23:30:54,655 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-01-06 23:30:54,685 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-01-06 23:30:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-01-06 23:30:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:30:54,696 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:54,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:54,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2021-01-06 23:30:54,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:54,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795064250] [2021-01-06 23:30:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:54,982 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 23:30:54,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795064250] [2021-01-06 23:30:54,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:54,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:30:54,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618887677] [2021-01-06 23:30:54,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:30:54,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:55,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:30:55,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:30:55,011 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-01-06 23:30:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:55,051 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-01-06 23:30:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:30:55,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:30:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:55,085 INFO L225 Difference]: With dead ends: 362 [2021-01-06 23:30:55,085 INFO L226 Difference]: Without dead ends: 298 [2021-01-06 23:30:55,086 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 23:30:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-01-06 23:30:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-01-06 23:30:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-01-06 23:30:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-01-06 23:30:55,198 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-01-06 23:30:55,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:55,200 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-01-06 23:30:55,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:30:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-01-06 23:30:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:30:55,202 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:55,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:55,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:30:55,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:55,203 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2021-01-06 23:30:55,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:55,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961643575] [2021-01-06 23:30:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:55,388 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 23:30:55,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961643575] [2021-01-06 23:30:55,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:55,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:30:55,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528632793] [2021-01-06 23:30:55,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:30:55,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:55,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:30:55,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:30:55,393 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-01-06 23:30:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:55,435 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2021-01-06 23:30:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:55,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:30:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:55,440 INFO L225 Difference]: With dead ends: 330 [2021-01-06 23:30:55,440 INFO L226 Difference]: Without dead ends: 266 [2021-01-06 23:30:55,441 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 23:30:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-01-06 23:30:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-01-06 23:30:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-01-06 23:30:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2021-01-06 23:30:55,466 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2021-01-06 23:30:55,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:55,466 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2021-01-06 23:30:55,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:30:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2021-01-06 23:30:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:30:55,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:55,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:55,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:30:55,469 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2021-01-06 23:30:55,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:55,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461255660] [2021-01-06 23:30:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:30:55,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461255660] [2021-01-06 23:30:55,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:55,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:55,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496613363] [2021-01-06 23:30:55,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:55,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:55,577 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2021-01-06 23:30:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:55,652 INFO L93 Difference]: Finished difference Result 414 states and 1086 transitions. [2021-01-06 23:30:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:30:55,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:30:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:55,657 INFO L225 Difference]: With dead ends: 414 [2021-01-06 23:30:55,657 INFO L226 Difference]: Without dead ends: 330 [2021-01-06 23:30:55,657 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 23:30:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-01-06 23:30:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 286. [2021-01-06 23:30:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2021-01-06 23:30:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 766 transitions. [2021-01-06 23:30:55,682 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 766 transitions. Word has length 10 [2021-01-06 23:30:55,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:55,683 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 766 transitions. [2021-01-06 23:30:55,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 766 transitions. [2021-01-06 23:30:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:30:55,686 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:55,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:55,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:30:55,686 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash -259726332, now seen corresponding path program 1 times [2021-01-06 23:30:55,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:55,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445695299] [2021-01-06 23:30:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:55,770 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 23:30:55,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445695299] [2021-01-06 23:30:55,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:55,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:55,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23259956] [2021-01-06 23:30:55,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:55,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:55,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:55,773 INFO L87 Difference]: Start difference. First operand 286 states and 766 transitions. Second operand 5 states. [2021-01-06 23:30:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:55,817 INFO L93 Difference]: Finished difference Result 410 states and 1076 transitions. [2021-01-06 23:30:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:55,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:30:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:55,820 INFO L225 Difference]: With dead ends: 410 [2021-01-06 23:30:55,820 INFO L226 Difference]: Without dead ends: 220 [2021-01-06 23:30:55,821 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 23:30:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-01-06 23:30:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-01-06 23:30:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2021-01-06 23:30:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 576 transitions. [2021-01-06 23:30:55,834 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 576 transitions. Word has length 12 [2021-01-06 23:30:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:55,835 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 576 transitions. [2021-01-06 23:30:55,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 576 transitions. [2021-01-06 23:30:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:30:55,837 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:55,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:55,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:30:55,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:55,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2021-01-06 23:30:55,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:55,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673617439] [2021-01-06 23:30:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:55,920 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 23:30:55,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673617439] [2021-01-06 23:30:55,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:55,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:30:55,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063326642] [2021-01-06 23:30:55,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:55,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:55,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:55,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:55,923 INFO L87 Difference]: Start difference. First operand 220 states and 576 transitions. Second operand 5 states. [2021-01-06 23:30:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:55,969 INFO L93 Difference]: Finished difference Result 288 states and 714 transitions. [2021-01-06 23:30:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:30:55,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:30:55,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:55,972 INFO L225 Difference]: With dead ends: 288 [2021-01-06 23:30:55,972 INFO L226 Difference]: Without dead ends: 212 [2021-01-06 23:30:55,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:30:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-01-06 23:30:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 176. [2021-01-06 23:30:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-01-06 23:30:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 440 transitions. [2021-01-06 23:30:55,982 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 440 transitions. Word has length 12 [2021-01-06 23:30:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:55,982 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 440 transitions. [2021-01-06 23:30:55,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 440 transitions. [2021-01-06 23:30:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:30:55,983 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:55,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:55,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:30:55,984 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:55,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1622661680, now seen corresponding path program 2 times [2021-01-06 23:30:55,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:55,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18818562] [2021-01-06 23:30:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:56,078 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 23:30:56,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18818562] [2021-01-06 23:30:56,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:56,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:56,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561482667] [2021-01-06 23:30:56,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:56,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:56,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:56,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:56,112 INFO L87 Difference]: Start difference. First operand 176 states and 440 transitions. Second operand 5 states. [2021-01-06 23:30:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:56,150 INFO L93 Difference]: Finished difference Result 224 states and 550 transitions. [2021-01-06 23:30:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:56,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:30:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:56,152 INFO L225 Difference]: With dead ends: 224 [2021-01-06 23:30:56,152 INFO L226 Difference]: Without dead ends: 116 [2021-01-06 23:30:56,152 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 23:30:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-01-06 23:30:56,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-01-06 23:30:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 23:30:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2021-01-06 23:30:56,159 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 12 [2021-01-06 23:30:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:56,159 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2021-01-06 23:30:56,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2021-01-06 23:30:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:30:56,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:56,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:56,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:30:56,161 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:56,162 INFO L82 PathProgramCache]: Analyzing trace with hash -701864959, now seen corresponding path program 1 times [2021-01-06 23:30:56,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:56,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755001219] [2021-01-06 23:30:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:56,244 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 23:30:56,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755001219] [2021-01-06 23:30:56,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:56,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:30:56,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551421401] [2021-01-06 23:30:56,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:30:56,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:30:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:30:56,247 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 6 states. [2021-01-06 23:30:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:56,298 INFO L93 Difference]: Finished difference Result 152 states and 362 transitions. [2021-01-06 23:30:56,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:30:56,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 23:30:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:56,300 INFO L225 Difference]: With dead ends: 152 [2021-01-06 23:30:56,300 INFO L226 Difference]: Without dead ends: 80 [2021-01-06 23:30:56,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 23:30:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-06 23:30:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-01-06 23:30:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-06 23:30:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2021-01-06 23:30:56,305 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 14 [2021-01-06 23:30:56,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:56,305 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2021-01-06 23:30:56,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:30:56,306 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2021-01-06 23:30:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:30:56,306 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:56,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:56,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:30:56,307 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:56,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 2 times [2021-01-06 23:30:56,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:56,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556808548] [2021-01-06 23:30:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:56,367 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 23:30:56,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556808548] [2021-01-06 23:30:56,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:56,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:30:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206244280] [2021-01-06 23:30:56,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:30:56,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:30:56,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:30:56,370 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2021-01-06 23:30:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:56,397 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2021-01-06 23:30:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:56,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 23:30:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:56,399 INFO L225 Difference]: With dead ends: 91 [2021-01-06 23:30:56,399 INFO L226 Difference]: Without dead ends: 69 [2021-01-06 23:30:56,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:56,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-06 23:30:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-01-06 23:30:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-06 23:30:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2021-01-06 23:30:56,403 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2021-01-06 23:30:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:56,403 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2021-01-06 23:30:56,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:30:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2021-01-06 23:30:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:30:56,404 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:56,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:56,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:30:56,405 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:56,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:56,405 INFO L82 PathProgramCache]: Analyzing trace with hash 182443752, now seen corresponding path program 1 times [2021-01-06 23:30:56,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:56,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514369225] [2021-01-06 23:30:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:56,454 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 23:30:56,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514369225] [2021-01-06 23:30:56,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:56,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:30:56,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926594394] [2021-01-06 23:30:56,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:56,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:56,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:56,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:56,457 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2021-01-06 23:30:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:56,492 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2021-01-06 23:30:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:30:56,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:30:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:56,494 INFO L225 Difference]: With dead ends: 65 [2021-01-06 23:30:56,494 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 23:30:56,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:30:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 23:30:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-06 23:30:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 23:30:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2021-01-06 23:30:56,497 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2021-01-06 23:30:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:56,497 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2021-01-06 23:30:56,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:56,497 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2021-01-06 23:30:56,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:30:56,498 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:56,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:56,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:30:56,498 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:56,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:56,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1015325315, now seen corresponding path program 1 times [2021-01-06 23:30:56,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:56,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781683542] [2021-01-06 23:30:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:56,550 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 23:30:56,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781683542] [2021-01-06 23:30:56,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:56,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:30:56,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697393367] [2021-01-06 23:30:56,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:30:56,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:56,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:30:56,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:30:56,555 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2021-01-06 23:30:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:56,594 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2021-01-06 23:30:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:30:56,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 23:30:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:56,596 INFO L225 Difference]: With dead ends: 43 [2021-01-06 23:30:56,596 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 23:30:56,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:30:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 23:30:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 23:30:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 23:30:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2021-01-06 23:30:56,598 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2021-01-06 23:30:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:56,598 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2021-01-06 23:30:56,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:30:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2021-01-06 23:30:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:30:56,599 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:30:56,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:30:56,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:30:56,600 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:30:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:30:56,600 INFO L82 PathProgramCache]: Analyzing trace with hash 719368643, now seen corresponding path program 1 times [2021-01-06 23:30:56,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:30:56,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370968518] [2021-01-06 23:30:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:30:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:30:56,706 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 23:30:56,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370968518] [2021-01-06 23:30:56,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:30:56,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:30:56,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179851150] [2021-01-06 23:30:56,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:30:56,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:30:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:30:56,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:30:56,711 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2021-01-06 23:30:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:30:56,735 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-01-06 23:30:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:30:56,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 23:30:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:30:56,737 INFO L225 Difference]: With dead ends: 36 [2021-01-06 23:30:56,737 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:30:56,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:30:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:30:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:30:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:30:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:30:56,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-01-06 23:30:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:30:56,739 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:30:56,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:30:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:30:56,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:30:56,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:30:56,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:30:56 BasicIcfg [2021-01-06 23:30:56,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:30:56,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:30:56,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:30:56,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:30:56,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:30:50" (3/4) ... [2021-01-06 23:30:56,750 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:30:56,756 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:30:56,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:30:56,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:30:56,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:30:56,762 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:30:56,762 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:30:56,762 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:30:56,812 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe002_tso.opt.i-witness.graphml [2021-01-06 23:30:56,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:30:56,814 INFO L168 Benchmark]: Toolchain (without parser) took 7281.58 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 125.3 MB in the beginning and 112.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 86.8 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:56,815 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:30:56,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 125.6 MB in the end (delta: -489.7 kB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:56,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.75 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 123.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:56,816 INFO L168 Benchmark]: Boogie Preprocessor took 29.02 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 122.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:56,819 INFO L168 Benchmark]: RCFGBuilder took 631.54 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 100.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:56,820 INFO L168 Benchmark]: TraceAbstraction took 5812.17 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 99.9 MB in the beginning and 114.8 MB in the end (delta: -14.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:56,821 INFO L168 Benchmark]: Witness Printer took 68.22 ms. Allocated memory is still 223.3 MB. Free memory was 114.8 MB in the beginning and 112.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:30:56,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 681.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 125.6 MB in the end (delta: -489.7 kB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.75 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 123.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.02 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 122.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 631.54 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 100.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5812.17 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 99.9 MB in the beginning and 114.8 MB in the end (delta: -14.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. * Witness Printer took 68.22 ms. Allocated memory is still 223.3 MB. Free memory was 114.8 MB in the beginning and 112.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 722 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 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: 5.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 243 SDtfs, 230 SDslu, 383 SDs, 0 SdLazy, 192 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 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, 11 MinimizatonAttempts, 80 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 6931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...