/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/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:43:00,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:43:00,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:43:00,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:43:00,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:43:00,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:43:00,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:43:00,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:43:00,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:43:00,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:43:00,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:43:00,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:43:00,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:43:00,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:43:00,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:43:00,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:43:00,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:43:00,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:43:00,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:43:00,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:43:00,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:43:00,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:43:00,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:43:00,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:43:00,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:43:00,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:43:00,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:43:00,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:43:00,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:43:00,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:43:00,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:43:00,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:43:00,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:43:00,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:43:00,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:43:00,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:43:00,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:43:01,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:43:01,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:43:01,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:43:01,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:43:01,038 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:43:01,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:43:01,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:43:01,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:43:01,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:43:01,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:43:01,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:43:01,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:43:01,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:43:01,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:43:01,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:43:01,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:43:01,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:43:01,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:43:01,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:43:01,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:43:01,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:43:01,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:43:01,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:43:01,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:43:01,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:43:01,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:43:01,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:43:01,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:43:01,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:43:01,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:43:01,498 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:43:01,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-12-23 13:43:01,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/299dd396d/b05c8b17d5714e0c8519a8bb1c720586/FLAG5a9e9fdd0 [2020-12-23 13:43:02,316 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:43:02,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i [2020-12-23 13:43:02,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/299dd396d/b05c8b17d5714e0c8519a8bb1c720586/FLAG5a9e9fdd0 [2020-12-23 13:43:02,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/299dd396d/b05c8b17d5714e0c8519a8bb1c720586 [2020-12-23 13:43:02,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:43:02,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:43:02,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:43:02,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:43:02,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:43:02,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:43:02" (1/1) ... [2020-12-23 13:43:02,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8e5650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:02, skipping insertion in model container [2020-12-23 13:43:02,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:43:02" (1/1) ... [2020-12-23 13:43:02,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:43:02,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:43:02,890 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/safe020_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~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[~__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$tmp_guard1~0,GLOBAL] [2020-12-23 13:43:03,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:43:03,289 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:43:03,308 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:43:03,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:43:03,487 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:43:03,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03 WrapperNode [2020-12-23 13:43:03,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:43:03,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:43:03,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:43:03,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:43:03,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:43:03,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:43:03,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:43:03,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:43:03,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (1/1) ... [2020-12-23 13:43:03,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:43:03,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:43:03,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:43:03,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:43:03,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (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 [2020-12-23 13:43:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:43:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:43:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:43:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:43:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:43:03,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:43:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:43:03,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:43:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:43:03,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:43:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:43:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:43:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:43:03,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:43:03,798 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:43:04,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:43:04,303 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:43:04,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:43:04 BoogieIcfgContainer [2020-12-23 13:43:04,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:43:04,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:43:04,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:43:04,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:43:04,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:43:02" (1/3) ... [2020-12-23 13:43:04,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ba8227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:43:04, skipping insertion in model container [2020-12-23 13:43:04,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:03" (2/3) ... [2020-12-23 13:43:04,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ba8227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:43:04, skipping insertion in model container [2020-12-23 13:43:04,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:43:04" (3/3) ... [2020-12-23 13:43:04,316 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-12-23 13:43:04,323 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:43:04,324 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:43:04,329 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:43:04,330 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:43:04,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:04,410 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:43:04,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:43:04,458 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:43:04,459 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:43:04,459 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:43:04,459 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:43:04,459 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:43:04,459 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:43:04,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:43:04,460 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:43:04,475 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:43:04,477 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:43:04,480 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:43:04,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-23 13:43:04,539 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-23 13:43:04,539 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:43:04,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-23 13:43:04,548 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-23 13:43:07,734 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-23 13:43:07,839 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 13:43:08,052 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-23 13:43:08,297 INFO L131 LiptonReduction]: Checked pairs total: 2226 [2020-12-23 13:43:08,298 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-23 13:43:08,305 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-12-23 13:43:08,329 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-12-23 13:43:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-12-23 13:43:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:43:08,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:08,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:08,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:08,350 INFO L82 PathProgramCache]: Analyzing trace with hash -938351108, now seen corresponding path program 1 times [2020-12-23 13:43:08,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:08,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373433881] [2020-12-23 13:43:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:08,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373433881] [2020-12-23 13:43:08,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:08,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:43:08,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039333379] [2020-12-23 13:43:08,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:43:08,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:08,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:43:08,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:43:08,762 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-12-23 13:43:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:08,859 INFO L93 Difference]: Finished difference Result 316 states and 835 transitions. [2020-12-23 13:43:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:43:08,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 13:43:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:08,892 INFO L225 Difference]: With dead ends: 316 [2020-12-23 13:43:08,893 INFO L226 Difference]: Without dead ends: 205 [2020-12-23 13:43:08,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:43:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-23 13:43:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2020-12-23 13:43:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-23 13:43:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 485 transitions. [2020-12-23 13:43:08,970 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 485 transitions. Word has length 8 [2020-12-23 13:43:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:08,972 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 485 transitions. [2020-12-23 13:43:08,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:43:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 485 transitions. [2020-12-23 13:43:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:43:08,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:08,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:08,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:43:08,974 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash 395784729, now seen corresponding path program 1 times [2020-12-23 13:43:08,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:08,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619985475] [2020-12-23 13:43:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:09,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619985475] [2020-12-23 13:43:09,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:09,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:43:09,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49485632] [2020-12-23 13:43:09,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:43:09,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:09,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:43:09,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:09,099 INFO L87 Difference]: Start difference. First operand 187 states and 485 transitions. Second operand 4 states. [2020-12-23 13:43:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:09,142 INFO L93 Difference]: Finished difference Result 196 states and 488 transitions. [2020-12-23 13:43:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:43:09,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:43:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:09,150 INFO L225 Difference]: With dead ends: 196 [2020-12-23 13:43:09,150 INFO L226 Difference]: Without dead ends: 196 [2020-12-23 13:43:09,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-23 13:43:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2020-12-23 13:43:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 13:43:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 455 transitions. [2020-12-23 13:43:09,199 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 455 transitions. Word has length 9 [2020-12-23 13:43:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:09,199 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 455 transitions. [2020-12-23 13:43:09,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:43:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 455 transitions. [2020-12-23 13:43:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:43:09,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:09,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:09,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:43:09,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:09,207 INFO L82 PathProgramCache]: Analyzing trace with hash 975885903, now seen corresponding path program 1 times [2020-12-23 13:43:09,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:09,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548928566] [2020-12-23 13:43:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:09,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548928566] [2020-12-23 13:43:09,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:09,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:43:09,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199647860] [2020-12-23 13:43:09,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:43:09,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:09,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:43:09,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:09,345 INFO L87 Difference]: Start difference. First operand 178 states and 455 transitions. Second operand 4 states. [2020-12-23 13:43:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:09,371 INFO L93 Difference]: Finished difference Result 187 states and 464 transitions. [2020-12-23 13:43:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:43:09,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:43:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:09,375 INFO L225 Difference]: With dead ends: 187 [2020-12-23 13:43:09,375 INFO L226 Difference]: Without dead ends: 187 [2020-12-23 13:43:09,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-23 13:43:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-12-23 13:43:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-23 13:43:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 431 transitions. [2020-12-23 13:43:09,408 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 431 transitions. Word has length 9 [2020-12-23 13:43:09,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:09,409 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 431 transitions. [2020-12-23 13:43:09,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:43:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 431 transitions. [2020-12-23 13:43:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:43:09,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:09,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:09,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:43:09,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:09,415 INFO L82 PathProgramCache]: Analyzing trace with hash -615576110, now seen corresponding path program 1 times [2020-12-23 13:43:09,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:09,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547959403] [2020-12-23 13:43:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:09,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547959403] [2020-12-23 13:43:09,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:09,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:43:09,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14052099] [2020-12-23 13:43:09,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:43:09,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:09,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:43:09,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:09,507 INFO L87 Difference]: Start difference. First operand 169 states and 431 transitions. Second operand 4 states. [2020-12-23 13:43:09,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:09,544 INFO L93 Difference]: Finished difference Result 209 states and 515 transitions. [2020-12-23 13:43:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:43:09,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 13:43:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:09,566 INFO L225 Difference]: With dead ends: 209 [2020-12-23 13:43:09,566 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 13:43:09,567 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 [2020-12-23 13:43:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 13:43:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2020-12-23 13:43:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-23 13:43:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 446 transitions. [2020-12-23 13:43:09,579 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 446 transitions. Word has length 10 [2020-12-23 13:43:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:09,580 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 446 transitions. [2020-12-23 13:43:09,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:43:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 446 transitions. [2020-12-23 13:43:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:43:09,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:09,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:09,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:43:09,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash 187690604, now seen corresponding path program 2 times [2020-12-23 13:43:09,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:09,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935742416] [2020-12-23 13:43:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:09,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935742416] [2020-12-23 13:43:09,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:09,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:43:09,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350793028] [2020-12-23 13:43:09,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:43:09,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:09,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:43:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:09,661 INFO L87 Difference]: Start difference. First operand 175 states and 446 transitions. Second operand 5 states. [2020-12-23 13:43:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:09,695 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2020-12-23 13:43:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:43:09,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:43:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:09,698 INFO L225 Difference]: With dead ends: 234 [2020-12-23 13:43:09,698 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 13:43:09,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:43:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 13:43:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2020-12-23 13:43:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 13:43:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 315 transitions. [2020-12-23 13:43:09,706 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 315 transitions. Word has length 10 [2020-12-23 13:43:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:09,707 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 315 transitions. [2020-12-23 13:43:09,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:43:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 315 transitions. [2020-12-23 13:43:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:43:09,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:09,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:09,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:43:09,709 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:09,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1342775669, now seen corresponding path program 1 times [2020-12-23 13:43:09,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:09,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018275935] [2020-12-23 13:43:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:09,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018275935] [2020-12-23 13:43:09,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:09,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:43:09,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136441336] [2020-12-23 13:43:09,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:43:09,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:43:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:09,791 INFO L87 Difference]: Start difference. First operand 132 states and 315 transitions. Second operand 4 states. [2020-12-23 13:43:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:09,838 INFO L93 Difference]: Finished difference Result 155 states and 339 transitions. [2020-12-23 13:43:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:43:09,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:43:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:09,840 INFO L225 Difference]: With dead ends: 155 [2020-12-23 13:43:09,840 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 13:43:09,841 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 [2020-12-23 13:43:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 13:43:09,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-23 13:43:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-23 13:43:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 251 transitions. [2020-12-23 13:43:09,851 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 251 transitions. Word has length 11 [2020-12-23 13:43:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:09,851 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 251 transitions. [2020-12-23 13:43:09,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:43:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 251 transitions. [2020-12-23 13:43:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:43:09,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:09,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:09,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:43:09,853 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1283997363, now seen corresponding path program 1 times [2020-12-23 13:43:09,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:09,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336661080] [2020-12-23 13:43:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:09,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336661080] [2020-12-23 13:43:09,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:09,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:43:09,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097428620] [2020-12-23 13:43:09,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:43:09,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:09,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:43:09,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:09,923 INFO L87 Difference]: Start difference. First operand 115 states and 251 transitions. Second operand 5 states. [2020-12-23 13:43:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:09,974 INFO L93 Difference]: Finished difference Result 116 states and 234 transitions. [2020-12-23 13:43:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:43:09,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:43:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:09,976 INFO L225 Difference]: With dead ends: 116 [2020-12-23 13:43:09,977 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 13:43:09,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:43:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 13:43:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-23 13:43:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 13:43:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 176 transitions. [2020-12-23 13:43:09,982 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 176 transitions. Word has length 12 [2020-12-23 13:43:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:09,982 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 176 transitions. [2020-12-23 13:43:09,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:43:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 176 transitions. [2020-12-23 13:43:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:43:09,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:09,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:09,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:43:09,984 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:09,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1633997476, now seen corresponding path program 1 times [2020-12-23 13:43:09,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:09,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095776363] [2020-12-23 13:43:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:10,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095776363] [2020-12-23 13:43:10,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:10,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:43:10,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931752904] [2020-12-23 13:43:10,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:43:10,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:10,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:43:10,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:43:10,052 INFO L87 Difference]: Start difference. First operand 89 states and 176 transitions. Second operand 6 states. [2020-12-23 13:43:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:10,102 INFO L93 Difference]: Finished difference Result 85 states and 166 transitions. [2020-12-23 13:43:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:43:10,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 13:43:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:10,103 INFO L225 Difference]: With dead ends: 85 [2020-12-23 13:43:10,103 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 13:43:10,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:43:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 13:43:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-12-23 13:43:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 13:43:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 83 transitions. [2020-12-23 13:43:10,107 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 83 transitions. Word has length 14 [2020-12-23 13:43:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:10,107 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 83 transitions. [2020-12-23 13:43:10,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:43:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 83 transitions. [2020-12-23 13:43:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:43:10,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:10,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:10,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:43:10,109 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:10,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1390745954, now seen corresponding path program 1 times [2020-12-23 13:43:10,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:10,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975031446] [2020-12-23 13:43:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:10,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975031446] [2020-12-23 13:43:10,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:10,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:43:10,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878798100] [2020-12-23 13:43:10,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:43:10,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:10,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:43:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:43:10,157 INFO L87 Difference]: Start difference. First operand 46 states and 83 transitions. Second operand 3 states. [2020-12-23 13:43:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:10,169 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-12-23 13:43:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:43:10,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 13:43:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:10,170 INFO L225 Difference]: With dead ends: 59 [2020-12-23 13:43:10,171 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 13:43:10,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:43:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 13:43:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-23 13:43:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 13:43:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-23 13:43:10,174 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-12-23 13:43:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:10,174 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-23 13:43:10,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:43:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-23 13:43:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:43:10,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:10,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:10,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:43:10,176 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:10,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:10,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1414383408, now seen corresponding path program 2 times [2020-12-23 13:43:10,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:10,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165477152] [2020-12-23 13:43:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:10,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165477152] [2020-12-23 13:43:10,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:10,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:43:10,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075522380] [2020-12-23 13:43:10,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:43:10,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:10,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:43:10,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:10,264 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-23 13:43:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:10,282 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-12-23 13:43:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:43:10,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 13:43:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:10,282 INFO L225 Difference]: With dead ends: 32 [2020-12-23 13:43:10,283 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:43:10,283 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 [2020-12-23 13:43:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:43:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:43:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:43:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:43:10,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 13:43:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:10,284 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:43:10,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:43:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:43:10,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:43:10,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:43:10,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:43:10 BasicIcfg [2020-12-23 13:43:10,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:43:10,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:43:10,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:43:10,291 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:43:10,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:43:04" (3/4) ... [2020-12-23 13:43:10,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:43:10,308 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:43:10,308 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:43:10,308 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:43:10,317 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:43:10,318 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:43:10,318 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:43:10,318 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:43:10,382 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe020_tso.oepc.i-witness.graphml [2020-12-23 13:43:10,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:43:10,385 INFO L168 Benchmark]: Toolchain (without parser) took 7826.46 ms. Allocated memory was 159.4 MB in the beginning and 247.5 MB in the end (delta: 88.1 MB). Free memory was 132.7 MB in the beginning and 142.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:10,385 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 132.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:43:10,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 928.30 ms. Allocated memory is still 159.4 MB. Free memory was 132.5 MB in the beginning and 135.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:10,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.37 ms. Allocated memory is still 159.4 MB. Free memory was 135.5 MB in the beginning and 133.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:10,387 INFO L168 Benchmark]: Boogie Preprocessor took 63.24 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 132.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:10,388 INFO L168 Benchmark]: RCFGBuilder took 640.65 ms. Allocated memory is still 159.4 MB. Free memory was 132.3 MB in the beginning and 110.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:10,389 INFO L168 Benchmark]: TraceAbstraction took 5982.19 ms. Allocated memory was 159.4 MB in the beginning and 247.5 MB in the end (delta: 88.1 MB). Free memory was 109.8 MB in the beginning and 145.5 MB in the end (delta: -35.6 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:10,390 INFO L168 Benchmark]: Witness Printer took 92.29 ms. Allocated memory is still 247.5 MB. Free memory was 145.5 MB in the beginning and 142.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:10,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 132.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 928.30 ms. Allocated memory is still 159.4 MB. Free memory was 132.5 MB in the beginning and 135.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 109.37 ms. Allocated memory is still 159.4 MB. Free memory was 135.5 MB in the beginning and 133.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.24 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 132.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 640.65 ms. Allocated memory is still 159.4 MB. Free memory was 132.3 MB in the beginning and 110.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5982.19 ms. Allocated memory was 159.4 MB in the beginning and 247.5 MB in the end (delta: 88.1 MB). Free memory was 109.8 MB in the beginning and 145.5 MB in the end (delta: -35.6 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. * Witness Printer took 92.29 ms. Allocated memory is still 247.5 MB. Free memory was 145.5 MB in the beginning and 142.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 727 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.8s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2226 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 166 SDtfs, 180 SDslu, 215 SDs, 0 SdLazy, 126 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...