/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/safe019_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:42:28,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:42:28,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:42:28,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:42:28,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:42:28,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:42:28,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:42:28,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:42:28,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:42:28,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:42:28,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:42:28,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:42:28,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:42:28,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:42:28,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:42:28,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:42:28,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:42:28,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:42:28,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:42:28,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:42:28,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:42:28,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:42:28,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:42:28,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:42:28,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:42:28,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:42:28,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:42:28,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:42:28,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:42:28,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:42:28,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:42:28,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:42:28,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:42:28,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:42:28,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:42:28,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:42:28,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:42:28,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:42:28,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:42:28,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:42:28,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:42:28,467 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 13:42:28,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:42:28,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:42:28,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:42:28,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:42:28,519 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:42:28,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:42:28,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:42:28,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:42:28,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:42:28,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:42:28,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:42:28,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:42:28,521 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:42:28,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:42:28,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:42:28,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:42:28,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:42:28,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:42:28,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:42:28,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:42:28,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:42:28,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:42:28,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:42:28,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:42:28,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:42:28,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:42:28,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:42:29,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:42:29,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:42:29,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:42:29,009 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:42:29,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2020-12-23 13:42:29,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1e2d6053b/a261aea2d5ef40959ef986e8689a6d68/FLAG3768ce2dd [2020-12-23 13:42:29,874 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:42:29,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2020-12-23 13:42:29,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1e2d6053b/a261aea2d5ef40959ef986e8689a6d68/FLAG3768ce2dd [2020-12-23 13:42:30,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1e2d6053b/a261aea2d5ef40959ef986e8689a6d68 [2020-12-23 13:42:30,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:42:30,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:42:30,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:30,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:42:30,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:42:30,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:30,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a6a586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30, skipping insertion in model container [2020-12-23 13:42:30,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:30,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:42:30,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:42:30,553 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/safe019_pso.oepc.i[950,963] 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[~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:30,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:30,769 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:42:30,790 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:30,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:30,969 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:42:30,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30 WrapperNode [2020-12-23 13:42:30,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:30,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:30,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:42:30,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:42:30,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:30,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:31,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:42:31,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:42:31,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:42:31,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (1/1) ... [2020-12-23 13:42:31,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:42:31,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:42:31,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:42:31,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:42:31,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (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 13:42:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:42:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:42:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:42:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:42:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:42:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:42:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:42:31,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:42:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:42:31,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:42:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-23 13:42:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-23 13:42:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:42:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:42:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:42:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:42:31,262 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 13:42:31,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:42:31,792 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:42:31,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:31 BoogieIcfgContainer [2020-12-23 13:42:31,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:42:31,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:42:31,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:42:31,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:42:31,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:30" (1/3) ... [2020-12-23 13:42:31,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e114e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:31, skipping insertion in model container [2020-12-23 13:42:31,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:30" (2/3) ... [2020-12-23 13:42:31,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e114e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:31, skipping insertion in model container [2020-12-23 13:42:31,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:31" (3/3) ... [2020-12-23 13:42:31,805 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2020-12-23 13:42:31,813 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:42:31,813 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:42:31,820 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:42:31,821 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:42:31,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,858 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,858 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,873 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,873 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,873 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,874 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,874 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,874 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,874 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,875 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,875 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,875 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,876 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,876 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,888 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,888 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,889 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,889 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,891 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,891 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,892 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:31,896 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:42:31,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 13:42:31,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:42:31,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:42:31,946 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:42:31,946 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:42:31,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:42:31,947 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:42:31,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:42:31,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:42:31,961 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:42:31,964 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-23 13:42:31,967 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-23 13:42:31,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-12-23 13:42:32,018 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-12-23 13:42:32,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:42:32,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-23 13:42:32,028 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-23 13:42:34,928 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:42:35,224 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:42:35,332 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:42:35,640 INFO L131 LiptonReduction]: Checked pairs total: 2978 [2020-12-23 13:42:35,641 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-23 13:42:35,649 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-23 13:42:35,712 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-23 13:42:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-23 13:42:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:35,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:35,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:35,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:35,753 INFO L82 PathProgramCache]: Analyzing trace with hash -36259415, now seen corresponding path program 1 times [2020-12-23 13:42:35,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:35,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149001216] [2020-12-23 13:42:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:36,113 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 13:42:36,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149001216] [2020-12-23 13:42:36,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:36,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:42:36,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829537941] [2020-12-23 13:42:36,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:42:36,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:36,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:42:36,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:36,144 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-23 13:42:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:36,232 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-12-23 13:42:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:42:36,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:42:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:36,279 INFO L225 Difference]: With dead ends: 670 [2020-12-23 13:42:36,279 INFO L226 Difference]: Without dead ends: 526 [2020-12-23 13:42:36,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-23 13:42:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-23 13:42:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-23 13:42:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-23 13:42:36,404 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-12-23 13:42:36,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:36,405 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-23 13:42:36,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:42:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-23 13:42:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:36,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:36,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:36,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:42:36,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1165014530, now seen corresponding path program 1 times [2020-12-23 13:42:36,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:36,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270374647] [2020-12-23 13:42:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:36,595 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 13:42:36,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270374647] [2020-12-23 13:42:36,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:36,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:36,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172897016] [2020-12-23 13:42:36,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:36,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:36,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:36,606 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-23 13:42:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:36,650 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-12-23 13:42:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:36,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:42:36,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:36,656 INFO L225 Difference]: With dead ends: 724 [2020-12-23 13:42:36,656 INFO L226 Difference]: Without dead ends: 412 [2020-12-23 13:42:36,657 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 13:42:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-23 13:42:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-12-23 13:42:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-23 13:42:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-12-23 13:42:36,705 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-12-23 13:42:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:36,707 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-12-23 13:42:36,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-12-23 13:42:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:42:36,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:36,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:36,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:42:36,715 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:36,716 INFO L82 PathProgramCache]: Analyzing trace with hash -485610361, now seen corresponding path program 1 times [2020-12-23 13:42:36,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:36,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264693631] [2020-12-23 13:42:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:36,819 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 13:42:36,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264693631] [2020-12-23 13:42:36,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:36,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:42:36,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103307656] [2020-12-23 13:42:36,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:42:36,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:36,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:42:36,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:36,822 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 3 states. [2020-12-23 13:42:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:36,835 INFO L93 Difference]: Finished difference Result 394 states and 1254 transitions. [2020-12-23 13:42:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:42:36,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-23 13:42:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:36,841 INFO L225 Difference]: With dead ends: 394 [2020-12-23 13:42:36,842 INFO L226 Difference]: Without dead ends: 394 [2020-12-23 13:42:36,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-23 13:42:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-23 13:42:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-23 13:42:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1254 transitions. [2020-12-23 13:42:36,918 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1254 transitions. Word has length 12 [2020-12-23 13:42:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:36,919 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1254 transitions. [2020-12-23 13:42:36,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:42:36,919 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1254 transitions. [2020-12-23 13:42:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:42:36,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:36,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:36,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:42:36,922 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1949399229, now seen corresponding path program 1 times [2020-12-23 13:42:36,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:36,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325185088] [2020-12-23 13:42:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:37,002 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 13:42:37,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325185088] [2020-12-23 13:42:37,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:37,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:37,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153623426] [2020-12-23 13:42:37,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:37,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:37,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:37,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:37,006 INFO L87 Difference]: Start difference. First operand 394 states and 1254 transitions. Second operand 4 states. [2020-12-23 13:42:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:37,039 INFO L93 Difference]: Finished difference Result 508 states and 1549 transitions. [2020-12-23 13:42:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:37,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:42:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:37,044 INFO L225 Difference]: With dead ends: 508 [2020-12-23 13:42:37,045 INFO L226 Difference]: Without dead ends: 412 [2020-12-23 13:42:37,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-23 13:42:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-12-23 13:42:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-23 13:42:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2020-12-23 13:42:37,070 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2020-12-23 13:42:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:37,071 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2020-12-23 13:42:37,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2020-12-23 13:42:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:42:37,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:37,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:37,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:42:37,074 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:37,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:37,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1949381931, now seen corresponding path program 1 times [2020-12-23 13:42:37,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:37,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283858802] [2020-12-23 13:42:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:37,201 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 13:42:37,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283858802] [2020-12-23 13:42:37,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:37,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:37,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761613437] [2020-12-23 13:42:37,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:37,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:37,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:37,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:37,206 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand 4 states. [2020-12-23 13:42:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:37,239 INFO L93 Difference]: Finished difference Result 526 states and 1530 transitions. [2020-12-23 13:42:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:37,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:42:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:37,244 INFO L225 Difference]: With dead ends: 526 [2020-12-23 13:42:37,244 INFO L226 Difference]: Without dead ends: 274 [2020-12-23 13:42:37,245 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 13:42:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-23 13:42:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-12-23 13:42:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-23 13:42:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-12-23 13:42:37,260 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2020-12-23 13:42:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:37,260 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-12-23 13:42:37,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-12-23 13:42:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:42:37,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:37,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:37,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:42:37,262 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:37,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2123867267, now seen corresponding path program 1 times [2020-12-23 13:42:37,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:37,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351804752] [2020-12-23 13:42:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:37,367 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 13:42:37,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351804752] [2020-12-23 13:42:37,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:37,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:37,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205956107] [2020-12-23 13:42:37,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:37,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:37,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:37,374 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-12-23 13:42:37,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:37,429 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-12-23 13:42:37,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:37,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 13:42:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:37,433 INFO L225 Difference]: With dead ends: 345 [2020-12-23 13:42:37,433 INFO L226 Difference]: Without dead ends: 252 [2020-12-23 13:42:37,433 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 13:42:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-23 13:42:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-12-23 13:42:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-23 13:42:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-12-23 13:42:37,448 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-12-23 13:42:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:37,449 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-12-23 13:42:37,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-12-23 13:42:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:42:37,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:37,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:37,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:42:37,451 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:37,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:37,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134941, now seen corresponding path program 1 times [2020-12-23 13:42:37,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:37,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578792509] [2020-12-23 13:42:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:37,582 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 13:42:37,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578792509] [2020-12-23 13:42:37,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:37,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:37,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873805253] [2020-12-23 13:42:37,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:37,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:37,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:37,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:37,588 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-12-23 13:42:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:37,657 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-12-23 13:42:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:37,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 13:42:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:37,660 INFO L225 Difference]: With dead ends: 278 [2020-12-23 13:42:37,660 INFO L226 Difference]: Without dead ends: 203 [2020-12-23 13:42:37,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-23 13:42:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-12-23 13:42:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-23 13:42:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-12-23 13:42:37,670 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-12-23 13:42:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:37,670 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-12-23 13:42:37,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-12-23 13:42:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:42:37,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:37,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:37,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:42:37,674 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:37,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628631, now seen corresponding path program 1 times [2020-12-23 13:42:37,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:37,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373870239] [2020-12-23 13:42:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:37,787 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 13:42:37,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373870239] [2020-12-23 13:42:37,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:37,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:37,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858523837] [2020-12-23 13:42:37,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:42:37,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:37,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:42:37,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:37,791 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-12-23 13:42:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:37,861 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-12-23 13:42:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:42:37,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 13:42:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:37,863 INFO L225 Difference]: With dead ends: 200 [2020-12-23 13:42:37,863 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 13:42:37,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:42:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 13:42:37,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-23 13:42:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-23 13:42:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-12-23 13:42:37,871 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-12-23 13:42:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:37,871 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-12-23 13:42:37,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:42:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-12-23 13:42:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:42:37,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:37,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:37,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:42:37,873 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash 554738786, now seen corresponding path program 1 times [2020-12-23 13:42:37,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:37,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254131704] [2020-12-23 13:42:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:37,931 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 13:42:37,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254131704] [2020-12-23 13:42:37,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:37,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:37,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443161873] [2020-12-23 13:42:37,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:37,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:37,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:37,934 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 5 states. [2020-12-23 13:42:37,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:37,964 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-12-23 13:42:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:37,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 13:42:37,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:37,966 INFO L225 Difference]: With dead ends: 194 [2020-12-23 13:42:37,966 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 13:42:37,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 13:42:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-23 13:42:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 13:42:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-23 13:42:37,972 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-23 13:42:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:37,972 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-23 13:42:37,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-23 13:42:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:42:37,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:37,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:37,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:42:37,973 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:37,974 INFO L82 PathProgramCache]: Analyzing trace with hash -780782352, now seen corresponding path program 2 times [2020-12-23 13:42:37,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:37,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348594372] [2020-12-23 13:42:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:38,050 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 13:42:38,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348594372] [2020-12-23 13:42:38,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:38,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:42:38,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283727808] [2020-12-23 13:42:38,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:42:38,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:38,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:42:38,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:42:38,052 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-12-23 13:42:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:38,125 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-12-23 13:42:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:42:38,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 13:42:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:38,127 INFO L225 Difference]: With dead ends: 120 [2020-12-23 13:42:38,127 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 13:42:38,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:42:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 13:42:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-23 13:42:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 13:42:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-12-23 13:42:38,131 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-12-23 13:42:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:38,131 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-12-23 13:42:38,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:42:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-12-23 13:42:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 13:42:38,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:38,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:38,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:42:38,132 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:38,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1285342776, now seen corresponding path program 1 times [2020-12-23 13:42:38,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:38,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203148847] [2020-12-23 13:42:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:38,231 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 13:42:38,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203148847] [2020-12-23 13:42:38,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:38,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:38,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518521459] [2020-12-23 13:42:38,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:38,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:38,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:38,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:38,239 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-12-23 13:42:38,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:38,266 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-12-23 13:42:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:38,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-23 13:42:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:38,268 INFO L225 Difference]: With dead ends: 70 [2020-12-23 13:42:38,268 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:42:38,268 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 13:42:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:42:38,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:42:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:42:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:42:38,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-23 13:42:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:38,269 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:42:38,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:42:38,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:42:38,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:42:38,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:38 BasicIcfg [2020-12-23 13:42:38,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:42:38,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:42:38,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:42:38,274 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:42:38,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:31" (3/4) ... [2020-12-23 13:42:38,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:42:38,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:42:38,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:42:38,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:42:38,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-23 13:42:38,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-23 13:42:38,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:42:38,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:38,297 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:38,364 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe019_pso.oepc.i-witness.graphml [2020-12-23 13:42:38,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:42:38,365 INFO L168 Benchmark]: Toolchain (without parser) took 8211.64 ms. Allocated memory was 159.4 MB in the beginning and 239.1 MB in the end (delta: 79.7 MB). Free memory was 133.0 MB in the beginning and 202.0 MB in the end (delta: -69.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:38,370 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:38,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.01 ms. Allocated memory is still 159.4 MB. Free memory was 132.8 MB in the beginning and 132.6 MB in the end (delta: 149.2 kB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:38,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.83 ms. Allocated memory is still 159.4 MB. Free memory was 132.6 MB in the beginning and 130.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:38,373 INFO L168 Benchmark]: Boogie Preprocessor took 65.82 ms. Allocated memory is still 159.4 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:38,373 INFO L168 Benchmark]: RCFGBuilder took 680.09 ms. Allocated memory is still 159.4 MB. Free memory was 129.5 MB in the beginning and 105.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:38,374 INFO L168 Benchmark]: TraceAbstraction took 6476.70 ms. Allocated memory was 159.4 MB in the beginning and 239.1 MB in the end (delta: 79.7 MB). Free memory was 105.4 MB in the beginning and 204.7 MB in the end (delta: -99.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:38,377 INFO L168 Benchmark]: Witness Printer took 90.03 ms. Allocated memory is still 239.1 MB. Free memory was 204.7 MB in the beginning and 202.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:38,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 809.01 ms. Allocated memory is still 159.4 MB. Free memory was 132.8 MB in the beginning and 132.6 MB in the end (delta: 149.2 kB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 71.83 ms. Allocated memory is still 159.4 MB. Free memory was 132.6 MB in the beginning and 130.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.82 ms. Allocated memory is still 159.4 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 680.09 ms. Allocated memory is still 159.4 MB. Free memory was 129.5 MB in the beginning and 105.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6476.70 ms. Allocated memory was 159.4 MB in the beginning and 239.1 MB in the end (delta: 79.7 MB). Free memory was 105.4 MB in the beginning and 204.7 MB in the end (delta: -99.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 90.03 ms. Allocated memory is still 239.1 MB. Free memory was 204.7 MB in the beginning and 202.0 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 1172 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 97 PlacesBefore, 38 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2978 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 238 SDtfs, 264 SDslu, 342 SDs, 0 SdLazy, 205 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 7617 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...