/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/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:42:25,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:42:25,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:42:25,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:42:25,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:42:25,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:42:25,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:42:25,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:42:25,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:42:25,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:42:25,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:42:25,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:42:25,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:42:25,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:42:25,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:42:25,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:42:25,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:42:25,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:42:25,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:42:25,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:42:25,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:42:25,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:42:25,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:42:25,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:42:25,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:42:25,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:42:25,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:42:25,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:42:25,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:42:25,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:42:25,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:42:25,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:42:25,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:42:25,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:42:25,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:42:25,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:42:25,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:42:25,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:42:25,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:42:25,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:42:25,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:42:25,520 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 13:42:25,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:42:25,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:42:25,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:42:25,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:42:25,552 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:42:25,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:42:25,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:42:25,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:42:25,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:42:25,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:42:25,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:42:25,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:42:25,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:42:25,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:42:25,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:42:25,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:42:25,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:42:25,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:42:25,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:42:25,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:42:25,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:42:25,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:42:25,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:42:25,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:42:25,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:42:25,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:42:25,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:42:26,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:42:26,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:42:26,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:42:26,019 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:42:26,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_tso.opt.i [2020-12-23 13:42:26,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df3cada02/dc46aabaeaab40d9a7645c2c194af4c5/FLAGf9fd902c2 [2020-12-23 13:42:26,973 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:42:26,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_tso.opt.i [2020-12-23 13:42:27,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df3cada02/dc46aabaeaab40d9a7645c2c194af4c5/FLAGf9fd902c2 [2020-12-23 13:42:27,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df3cada02/dc46aabaeaab40d9a7645c2c194af4c5 [2020-12-23 13:42:27,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:42:27,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:42:27,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:27,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:42:27,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:42:27,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:27" (1/1) ... [2020-12-23 13:42:27,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57272274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:27, skipping insertion in model container [2020-12-23 13:42:27,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:27" (1/1) ... [2020-12-23 13:42:27,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:42:27,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:42:27,483 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/safe018_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[~__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$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:27,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:27,834 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:42:27,853 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:27,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:28,018 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:42:28,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28 WrapperNode [2020-12-23 13:42:28,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:28,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:28,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:42:28,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:42:28,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:28,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:42:28,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:42:28,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:42:28,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (1/1) ... [2020-12-23 13:42:28,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:42:28,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:42:28,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:42:28,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:42:28,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (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 13:42:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:42:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:42:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:42:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:42:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:42:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:42:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:42:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:42:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:42:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:42:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:42:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:42:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:42:28,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:42:28,291 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 13:42:28,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:42:28,761 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:42:28,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:28 BoogieIcfgContainer [2020-12-23 13:42:28,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:42:28,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:42:28,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:42:28,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:42:28,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:27" (1/3) ... [2020-12-23 13:42:28,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc7986c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:28, skipping insertion in model container [2020-12-23 13:42:28,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:28" (2/3) ... [2020-12-23 13:42:28,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc7986c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:28, skipping insertion in model container [2020-12-23 13:42:28,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:28" (3/3) ... [2020-12-23 13:42:28,776 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-12-23 13:42:28,785 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:42:28,786 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:42:28,793 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:42:28,795 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:42:28,838 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,838 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,839 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,839 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,839 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,839 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,840 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,840 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,842 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,842 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,842 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,843 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,843 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,845 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,846 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,846 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,846 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,848 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,848 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,859 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,862 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,863 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,863 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:28,866 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:42:28,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:42:28,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:42:28,923 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:42:28,923 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:42:28,924 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:42:28,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:42:28,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:42:28,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:42:28,924 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:42:28,941 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:42:28,944 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:42:28,948 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:42:28,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-23 13:42:29,001 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-23 13:42:29,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:42:29,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 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. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-23 13:42:29,011 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-23 13:42:32,131 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:42:32,243 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:42:32,523 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:42:32,633 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:42:32,648 INFO L131 LiptonReduction]: Checked pairs total: 2020 [2020-12-23 13:42:32,648 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:42:32,656 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-23 13:42:32,688 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-12-23 13:42:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-12-23 13:42:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:42:32,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:32,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:32,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:32,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1647941983, now seen corresponding path program 1 times [2020-12-23 13:42:32,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:32,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922810326] [2020-12-23 13:42:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:32,994 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 13:42:32,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922810326] [2020-12-23 13:42:32,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:32,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:32,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135150413] [2020-12-23 13:42:33,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:42:33,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:33,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:42:33,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:42:33,024 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-12-23 13:42:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:33,057 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-12-23 13:42:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:42:33,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:42:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:33,076 INFO L225 Difference]: With dead ends: 274 [2020-12-23 13:42:33,076 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 13:42:33,078 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 [2020-12-23 13:42:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 13:42:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-23 13:42:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-23 13:42:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-12-23 13:42:33,163 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-12-23 13:42:33,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:33,165 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-12-23 13:42:33,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:42:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-12-23 13:42:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:42:33,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:33,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:33,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:42:33,170 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:33,173 INFO L82 PathProgramCache]: Analyzing trace with hash -453422130, now seen corresponding path program 1 times [2020-12-23 13:42:33,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:33,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743562831] [2020-12-23 13:42:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:33,439 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 13:42:33,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743562831] [2020-12-23 13:42:33,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:33,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:33,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284689942] [2020-12-23 13:42:33,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:33,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:33,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:33,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:33,443 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-12-23 13:42:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:33,493 INFO L93 Difference]: Finished difference Result 268 states and 719 transitions. [2020-12-23 13:42:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:33,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:42:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:33,497 INFO L225 Difference]: With dead ends: 268 [2020-12-23 13:42:33,497 INFO L226 Difference]: Without dead ends: 220 [2020-12-23 13:42:33,498 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 13:42:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-23 13:42:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-12-23 13:42:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-23 13:42:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 612 transitions. [2020-12-23 13:42:33,523 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 612 transitions. Word has length 9 [2020-12-23 13:42:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:33,523 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 612 transitions. [2020-12-23 13:42:33,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 612 transitions. [2020-12-23 13:42:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:33,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:33,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:33,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:42:33,526 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:33,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1814079141, now seen corresponding path program 1 times [2020-12-23 13:42:33,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:33,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52636724] [2020-12-23 13:42:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:33,668 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 13:42:33,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52636724] [2020-12-23 13:42:33,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:33,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:33,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644476] [2020-12-23 13:42:33,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:33,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:33,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:33,672 INFO L87 Difference]: Start difference. First operand 220 states and 612 transitions. Second operand 5 states. [2020-12-23 13:42:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:33,762 INFO L93 Difference]: Finished difference Result 295 states and 800 transitions. [2020-12-23 13:42:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:42:33,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:42:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:33,766 INFO L225 Difference]: With dead ends: 295 [2020-12-23 13:42:33,766 INFO L226 Difference]: Without dead ends: 250 [2020-12-23 13:42:33,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:42:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-23 13:42:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2020-12-23 13:42:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-23 13:42:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 641 transitions. [2020-12-23 13:42:33,793 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 641 transitions. Word has length 10 [2020-12-23 13:42:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:33,793 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 641 transitions. [2020-12-23 13:42:33,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 641 transitions. [2020-12-23 13:42:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:33,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:33,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:33,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:42:33,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1172176569, now seen corresponding path program 1 times [2020-12-23 13:42:33,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:33,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233790126] [2020-12-23 13:42:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:33,864 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 13:42:33,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233790126] [2020-12-23 13:42:33,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:33,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:33,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529669388] [2020-12-23 13:42:33,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:33,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:33,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:33,870 INFO L87 Difference]: Start difference. First operand 232 states and 641 transitions. Second operand 5 states. [2020-12-23 13:42:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:33,900 INFO L93 Difference]: Finished difference Result 250 states and 665 transitions. [2020-12-23 13:42:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:33,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:42:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:33,904 INFO L225 Difference]: With dead ends: 250 [2020-12-23 13:42:33,904 INFO L226 Difference]: Without dead ends: 214 [2020-12-23 13:42:33,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-23 13:42:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-12-23 13:42:33,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-23 13:42:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 581 transitions. [2020-12-23 13:42:33,920 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 581 transitions. Word has length 10 [2020-12-23 13:42:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:33,921 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 581 transitions. [2020-12-23 13:42:33,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 581 transitions. [2020-12-23 13:42:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:33,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:33,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:33,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:42:33,924 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash 329174463, now seen corresponding path program 1 times [2020-12-23 13:42:33,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:33,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990302287] [2020-12-23 13:42:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:34,021 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 13:42:34,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990302287] [2020-12-23 13:42:34,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:34,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:34,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704880831] [2020-12-23 13:42:34,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:34,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:34,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:34,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:34,024 INFO L87 Difference]: Start difference. First operand 214 states and 581 transitions. Second operand 5 states. [2020-12-23 13:42:34,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:34,057 INFO L93 Difference]: Finished difference Result 226 states and 595 transitions. [2020-12-23 13:42:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:34,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:42:34,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:34,060 INFO L225 Difference]: With dead ends: 226 [2020-12-23 13:42:34,060 INFO L226 Difference]: Without dead ends: 202 [2020-12-23 13:42:34,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-23 13:42:34,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-23 13:42:34,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 13:42:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 543 transitions. [2020-12-23 13:42:34,072 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 543 transitions. Word has length 11 [2020-12-23 13:42:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:34,073 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 543 transitions. [2020-12-23 13:42:34,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 543 transitions. [2020-12-23 13:42:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:34,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:34,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:34,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:42:34,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:34,076 INFO L82 PathProgramCache]: Analyzing trace with hash 400886096, now seen corresponding path program 1 times [2020-12-23 13:42:34,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:34,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009699913] [2020-12-23 13:42:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:34,181 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 13:42:34,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009699913] [2020-12-23 13:42:34,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:34,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:34,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005785785] [2020-12-23 13:42:34,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:42:34,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:34,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:42:34,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:34,186 INFO L87 Difference]: Start difference. First operand 202 states and 543 transitions. Second operand 6 states. [2020-12-23 13:42:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:34,246 INFO L93 Difference]: Finished difference Result 247 states and 648 transitions. [2020-12-23 13:42:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:34,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 13:42:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:34,249 INFO L225 Difference]: With dead ends: 247 [2020-12-23 13:42:34,249 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 13:42:34,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:42:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 13:42:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-23 13:42:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-23 13:42:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-12-23 13:42:34,256 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 11 [2020-12-23 13:42:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:34,257 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-12-23 13:42:34,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:42:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-12-23 13:42:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:42:34,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:34,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:34,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:42:34,264 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:34,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1225814647, now seen corresponding path program 1 times [2020-12-23 13:42:34,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:34,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351563342] [2020-12-23 13:42:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:34,394 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 13:42:34,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351563342] [2020-12-23 13:42:34,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:34,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:34,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868387825] [2020-12-23 13:42:34,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:34,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:34,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:34,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:34,398 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-12-23 13:42:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:34,451 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-12-23 13:42:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:34,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:42:34,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:34,453 INFO L225 Difference]: With dead ends: 148 [2020-12-23 13:42:34,453 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 13:42:34,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:42:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 13:42:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-23 13:42:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 13:42:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-12-23 13:42:34,459 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-12-23 13:42:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:34,460 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-12-23 13:42:34,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-12-23 13:42:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:42:34,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:34,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:34,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:42:34,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 532831146, now seen corresponding path program 1 times [2020-12-23 13:42:34,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:34,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206257719] [2020-12-23 13:42:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:34,564 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 13:42:34,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206257719] [2020-12-23 13:42:34,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:34,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:34,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971059807] [2020-12-23 13:42:34,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:34,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:34,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:34,572 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-12-23 13:42:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:34,606 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-12-23 13:42:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:34,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:42:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:34,608 INFO L225 Difference]: With dead ends: 87 [2020-12-23 13:42:34,608 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 13:42:34,609 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 13:42:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 13:42:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 13:42:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 13:42:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-12-23 13:42:34,613 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-12-23 13:42:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:34,613 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-12-23 13:42:34,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-12-23 13:42:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:42:34,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:34,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:34,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:42:34,615 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash -206155871, now seen corresponding path program 1 times [2020-12-23 13:42:34,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:34,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254294679] [2020-12-23 13:42:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:34,672 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 13:42:34,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254294679] [2020-12-23 13:42:34,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:34,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:34,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757504759] [2020-12-23 13:42:34,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:34,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:34,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:34,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:34,676 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-12-23 13:42:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:34,718 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-12-23 13:42:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:34,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:42:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:34,719 INFO L225 Difference]: With dead ends: 62 [2020-12-23 13:42:34,720 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 13:42:34,720 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 [2020-12-23 13:42:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 13:42:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 13:42:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 13:42:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-12-23 13:42:34,723 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-12-23 13:42:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:34,723 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-12-23 13:42:34,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-12-23 13:42:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:42:34,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:34,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:34,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:42:34,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:34,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:34,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2107760638, now seen corresponding path program 1 times [2020-12-23 13:42:34,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:34,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727880937] [2020-12-23 13:42:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:34,785 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 13:42:34,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727880937] [2020-12-23 13:42:34,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:34,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:42:34,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696632034] [2020-12-23 13:42:34,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:42:34,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:34,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:42:34,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:34,788 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-12-23 13:42:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:34,835 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-12-23 13:42:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:42:34,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 13:42:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:34,837 INFO L225 Difference]: With dead ends: 40 [2020-12-23 13:42:34,837 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 13:42:34,837 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 [2020-12-23 13:42:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 13:42:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 13:42:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 13:42:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-12-23 13:42:34,839 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-12-23 13:42:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:34,839 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-12-23 13:42:34,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:42:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-12-23 13:42:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:42:34,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:34,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:34,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:42:34,841 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:34,841 INFO L82 PathProgramCache]: Analyzing trace with hash 202243322, now seen corresponding path program 1 times [2020-12-23 13:42:34,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:34,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827550482] [2020-12-23 13:42:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:34,890 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 13:42:34,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827550482] [2020-12-23 13:42:34,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:34,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:34,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402920420] [2020-12-23 13:42:34,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:34,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:34,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:34,893 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-12-23 13:42:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:34,918 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-23 13:42:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:34,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 13:42:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:34,918 INFO L225 Difference]: With dead ends: 33 [2020-12-23 13:42:34,918 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:42:34,919 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 [2020-12-23 13:42:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:42:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:42:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:42:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:42:34,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-23 13:42:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:34,920 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:42:34,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:42:34,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:42:34,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:42:34,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:34 BasicIcfg [2020-12-23 13:42:34,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:42:34,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:42:34,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:42:34,926 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:42:34,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:28" (3/4) ... [2020-12-23 13:42:34,931 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:42:34,938 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:42:34,939 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:42:34,939 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:42:34,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:42:34,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:42:34,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:34,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:35,000 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe018_tso.opt.i-witness.graphml [2020-12-23 13:42:35,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:42:35,002 INFO L168 Benchmark]: Toolchain (without parser) took 7772.72 ms. Allocated memory was 158.3 MB in the beginning and 239.1 MB in the end (delta: 80.7 MB). Free memory was 131.7 MB in the beginning and 127.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 86.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:35,003 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:35,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.28 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 136.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:35,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.25 ms. Allocated memory is still 158.3 MB. Free memory was 136.0 MB in the beginning and 133.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:35,004 INFO L168 Benchmark]: Boogie Preprocessor took 60.57 ms. Allocated memory is still 158.3 MB. Free memory was 133.9 MB in the beginning and 132.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:35,005 INFO L168 Benchmark]: RCFGBuilder took 578.10 ms. Allocated memory is still 158.3 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 13:42:35,006 INFO L168 Benchmark]: TraceAbstraction took 6159.32 ms. Allocated memory was 158.3 MB in the beginning and 239.1 MB in the end (delta: 80.7 MB). Free memory was 109.8 MB in the beginning and 130.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 62.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:35,006 INFO L168 Benchmark]: Witness Printer took 75.08 ms. Allocated memory is still 239.1 MB. Free memory was 130.0 MB in the beginning and 127.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:35,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 787.28 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 136.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 100.25 ms. Allocated memory is still 158.3 MB. Free memory was 136.0 MB in the beginning and 133.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.57 ms. Allocated memory is still 158.3 MB. Free memory was 133.9 MB in the beginning and 132.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 578.10 ms. Allocated memory is still 158.3 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 6159.32 ms. Allocated memory was 158.3 MB in the beginning and 239.1 MB in the end (delta: 80.7 MB). Free memory was 109.8 MB in the beginning and 130.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 62.0 MB. Max. memory is 8.0 GB. * Witness Printer took 75.08 ms. Allocated memory is still 239.1 MB. Free memory was 130.0 MB in the beginning and 127.4 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 758 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 53 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2020 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 220 SDtfs, 244 SDslu, 367 SDs, 0 SdLazy, 167 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 6005 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...