/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/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:44:14,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:44:14,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:44:14,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:44:14,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:44:14,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:44:14,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:44:14,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:44:14,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:44:14,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:44:14,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:44:14,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:44:14,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:44:14,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:44:14,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:44:14,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:44:14,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:44:14,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:44:14,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:44:14,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:44:14,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:44:14,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:44:14,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:44:14,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:44:14,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:44:14,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:44:14,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:44:14,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:44:14,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:44:14,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:44:14,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:44:14,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:44:14,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:44:14,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:44:14,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:44:14,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:44:14,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:44:14,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:44:14,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:44:14,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:44:14,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:44:14,428 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 13:44:14,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:44:14,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:44:14,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:44:14,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:44:14,484 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:44:14,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:44:14,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:44:14,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:44:14,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:44:14,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:44:14,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:44:14,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:44:14,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:44:14,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:44:14,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:44:14,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:44:14,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:44:14,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:44:14,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:44:14,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:44:14,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:44:14,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:44:14,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:44:14,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:44:14,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:44:14,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:44:14,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:44:14,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:44:14,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:44:14,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:44:14,931 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:44:14,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-12-23 13:44:15,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/235fc9b91/edff71396eac400f93f846f94b0f52d9/FLAGc3fa5e4a8 [2020-12-23 13:44:15,757 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:44:15,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-12-23 13:44:15,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/235fc9b91/edff71396eac400f93f846f94b0f52d9/FLAGc3fa5e4a8 [2020-12-23 13:44:16,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/235fc9b91/edff71396eac400f93f846f94b0f52d9 [2020-12-23 13:44:16,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:44:16,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:44:16,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:16,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:44:16,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:44:16,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ea818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16, skipping insertion in model container [2020-12-23 13:44:16,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:44:16,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:44:16,366 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/safe025_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~__unbuffered_p2_EBX~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:16,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:16,613 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:44:16,631 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:16,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:16,865 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:44:16,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16 WrapperNode [2020-12-23 13:44:16,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:16,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:16,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:44:16,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:44:16,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:16,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:44:16,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:44:16,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:44:16,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:44:16,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:44:16,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:44:16,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:44:16,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (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 13:44:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:44:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:44:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:44:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:44:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:44:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:44:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:44:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:44:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:44:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:44:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:44:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:44:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:44:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:44:17,111 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 13:44:17,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:44:17,610 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:44:17,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:17 BoogieIcfgContainer [2020-12-23 13:44:17,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:44:17,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:44:17,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:44:17,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:44:17,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:44:16" (1/3) ... [2020-12-23 13:44:17,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ed361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:17, skipping insertion in model container [2020-12-23 13:44:17,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (2/3) ... [2020-12-23 13:44:17,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ed361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:17, skipping insertion in model container [2020-12-23 13:44:17,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:17" (3/3) ... [2020-12-23 13:44:17,622 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-12-23 13:44:17,630 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:44:17,630 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:44:17,636 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:44:17,637 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:44:17,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,678 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,678 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,678 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,678 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,680 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,680 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,685 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,685 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,691 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,691 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,691 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,694 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,695 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,697 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:44:17,718 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:44:17,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:44:17,743 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:44:17,744 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:44:17,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:44:17,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:44:17,744 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:44:17,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:44:17,744 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:44:17,759 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:44:17,761 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:44:17,765 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:44:17,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:44:17,814 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:44:17,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:44:17,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:44:17,822 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:44:20,051 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 13:44:20,248 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 13:44:20,743 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-23 13:44:21,197 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:44:21,307 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:44:21,561 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:44:21,671 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:44:21,742 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2020-12-23 13:44:21,742 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-23 13:44:21,752 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-23 13:44:21,796 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-23 13:44:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-23 13:44:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:44:21,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:21,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:21,809 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:21,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2020-12-23 13:44:21,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:21,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739277962] [2020-12-23 13:44:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,084 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 13:44:22,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739277962] [2020-12-23 13:44:22,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:44:22,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136551284] [2020-12-23 13:44:22,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:22,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:22,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,113 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-23 13:44:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,199 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-23 13:44:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:22,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 13:44:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,217 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:44:22,217 INFO L226 Difference]: Without dead ends: 218 [2020-12-23 13:44:22,219 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 13:44:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-23 13:44:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-23 13:44:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-23 13:44:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-12-23 13:44:22,290 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-12-23 13:44:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:22,291 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-12-23 13:44:22,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-12-23 13:44:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:44:22,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:44:22,293 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,294 INFO L82 PathProgramCache]: Analyzing trace with hash 695075092, now seen corresponding path program 1 times [2020-12-23 13:44:22,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139716919] [2020-12-23 13:44:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,378 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 13:44:22,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139716919] [2020-12-23 13:44:22,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:22,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20918173] [2020-12-23 13:44:22,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:22,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:22,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,383 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-12-23 13:44:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,415 INFO L93 Difference]: Finished difference Result 312 states and 816 transitions. [2020-12-23 13:44:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:22,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 13:44:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,419 INFO L225 Difference]: With dead ends: 312 [2020-12-23 13:44:22,419 INFO L226 Difference]: Without dead ends: 296 [2020-12-23 13:44:22,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-23 13:44:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 262. [2020-12-23 13:44:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-23 13:44:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 703 transitions. [2020-12-23 13:44:22,447 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 703 transitions. Word has length 9 [2020-12-23 13:44:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:22,448 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 703 transitions. [2020-12-23 13:44:22,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 703 transitions. [2020-12-23 13:44:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:44:22,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:44:22,451 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,451 INFO L82 PathProgramCache]: Analyzing trace with hash 72489286, now seen corresponding path program 1 times [2020-12-23 13:44:22,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763788361] [2020-12-23 13:44:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,543 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 13:44:22,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763788361] [2020-12-23 13:44:22,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:44:22,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602680742] [2020-12-23 13:44:22,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:22,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:22,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,547 INFO L87 Difference]: Start difference. First operand 262 states and 703 transitions. Second operand 3 states. [2020-12-23 13:44:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,561 INFO L93 Difference]: Finished difference Result 254 states and 677 transitions. [2020-12-23 13:44:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:22,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:44:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,566 INFO L225 Difference]: With dead ends: 254 [2020-12-23 13:44:22,567 INFO L226 Difference]: Without dead ends: 254 [2020-12-23 13:44:22,568 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 13:44:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-23 13:44:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2020-12-23 13:44:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-23 13:44:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 641 transitions. [2020-12-23 13:44:22,602 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 641 transitions. Word has length 10 [2020-12-23 13:44:22,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:22,603 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 641 transitions. [2020-12-23 13:44:22,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 641 transitions. [2020-12-23 13:44:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:44:22,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:44:22,610 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,612 INFO L82 PathProgramCache]: Analyzing trace with hash 72490526, now seen corresponding path program 1 times [2020-12-23 13:44:22,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253600957] [2020-12-23 13:44:22,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:22,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253600957] [2020-12-23 13:44:22,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:22,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606911446] [2020-12-23 13:44:22,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:22,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:22,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,675 INFO L87 Difference]: Start difference. First operand 238 states and 641 transitions. Second operand 3 states. [2020-12-23 13:44:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,699 INFO L93 Difference]: Finished difference Result 226 states and 600 transitions. [2020-12-23 13:44:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:22,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:44:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,702 INFO L225 Difference]: With dead ends: 226 [2020-12-23 13:44:22,702 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 13:44:22,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 13:44:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 202. [2020-12-23 13:44:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 13:44:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 530 transitions. [2020-12-23 13:44:22,713 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 530 transitions. Word has length 10 [2020-12-23 13:44:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:22,713 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 530 transitions. [2020-12-23 13:44:22,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 530 transitions. [2020-12-23 13:44:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:44:22,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:44:22,715 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,716 INFO L82 PathProgramCache]: Analyzing trace with hash -2036231076, now seen corresponding path program 1 times [2020-12-23 13:44:22,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434151030] [2020-12-23 13:44:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,770 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 13:44:22,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434151030] [2020-12-23 13:44:22,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:22,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128501810] [2020-12-23 13:44:22,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:22,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:22,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:22,773 INFO L87 Difference]: Start difference. First operand 202 states and 530 transitions. Second operand 4 states. [2020-12-23 13:44:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,831 INFO L93 Difference]: Finished difference Result 282 states and 728 transitions. [2020-12-23 13:44:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:22,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:44:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,834 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:44:22,834 INFO L226 Difference]: Without dead ends: 178 [2020-12-23 13:44:22,834 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 13:44:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-23 13:44:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-23 13:44:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 13:44:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-12-23 13:44:22,842 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-12-23 13:44:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:22,842 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-12-23 13:44:22,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-12-23 13:44:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:44:22,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:44:22,844 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2047800276, now seen corresponding path program 2 times [2020-12-23 13:44:22,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87891041] [2020-12-23 13:44:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,946 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 13:44:22,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87891041] [2020-12-23 13:44:22,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:22,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541774714] [2020-12-23 13:44:22,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:22,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:22,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:22,949 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 4 states. [2020-12-23 13:44:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,978 INFO L93 Difference]: Finished difference Result 206 states and 481 transitions. [2020-12-23 13:44:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:22,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:44:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,980 INFO L225 Difference]: With dead ends: 206 [2020-12-23 13:44:22,980 INFO L226 Difference]: Without dead ends: 150 [2020-12-23 13:44:22,981 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 13:44:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-23 13:44:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-23 13:44:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-23 13:44:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 344 transitions. [2020-12-23 13:44:22,987 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 344 transitions. Word has length 11 [2020-12-23 13:44:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:22,988 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 344 transitions. [2020-12-23 13:44:22,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 344 transitions. [2020-12-23 13:44:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:44:22,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:44:22,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1362454825, now seen corresponding path program 1 times [2020-12-23 13:44:22,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12849619] [2020-12-23 13:44:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12849619] [2020-12-23 13:44:23,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:23,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781361982] [2020-12-23 13:44:23,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:23,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:23,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:23,051 INFO L87 Difference]: Start difference. First operand 150 states and 344 transitions. Second operand 5 states. [2020-12-23 13:44:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,097 INFO L93 Difference]: Finished difference Result 149 states and 319 transitions. [2020-12-23 13:44:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:23,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:44:23,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,099 INFO L225 Difference]: With dead ends: 149 [2020-12-23 13:44:23,099 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 13:44:23,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:44:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 13:44:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-23 13:44:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-23 13:44:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 242 transitions. [2020-12-23 13:44:23,105 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 242 transitions. Word has length 12 [2020-12-23 13:44:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,106 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 242 transitions. [2020-12-23 13:44:23,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 242 transitions. [2020-12-23 13:44:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:44:23,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:44:23,108 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash -646579048, now seen corresponding path program 1 times [2020-12-23 13:44:23,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684486257] [2020-12-23 13:44:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,224 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 13:44:23,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684486257] [2020-12-23 13:44:23,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:44:23,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724623211] [2020-12-23 13:44:23,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:44:23,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:44:23,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:44:23,246 INFO L87 Difference]: Start difference. First operand 115 states and 242 transitions. Second operand 6 states. [2020-12-23 13:44:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,313 INFO L93 Difference]: Finished difference Result 110 states and 230 transitions. [2020-12-23 13:44:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:44:23,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 13:44:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,314 INFO L225 Difference]: With dead ends: 110 [2020-12-23 13:44:23,314 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 13:44:23,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:44:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 13:44:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-12-23 13:44:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 13:44:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 185 transitions. [2020-12-23 13:44:23,327 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 185 transitions. Word has length 14 [2020-12-23 13:44:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,327 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 185 transitions. [2020-12-23 13:44:23,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:44:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 185 transitions. [2020-12-23 13:44:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:23,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:44:23,329 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,329 INFO L82 PathProgramCache]: Analyzing trace with hash 390859497, now seen corresponding path program 1 times [2020-12-23 13:44:23,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146781610] [2020-12-23 13:44:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,418 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 13:44:23,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146781610] [2020-12-23 13:44:23,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:23,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108678288] [2020-12-23 13:44:23,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:23,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:23,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:23,422 INFO L87 Difference]: Start difference. First operand 88 states and 185 transitions. Second operand 4 states. [2020-12-23 13:44:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,460 INFO L93 Difference]: Finished difference Result 117 states and 238 transitions. [2020-12-23 13:44:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:23,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 13:44:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,462 INFO L225 Difference]: With dead ends: 117 [2020-12-23 13:44:23,462 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 13:44:23,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:44:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 13:44:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-12-23 13:44:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 13:44:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 101 transitions. [2020-12-23 13:44:23,465 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 101 transitions. Word has length 17 [2020-12-23 13:44:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,466 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 101 transitions. [2020-12-23 13:44:23,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 101 transitions. [2020-12-23 13:44:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:23,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:44:23,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,468 INFO L82 PathProgramCache]: Analyzing trace with hash 321753769, now seen corresponding path program 2 times [2020-12-23 13:44:23,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124560362] [2020-12-23 13:44:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,534 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 13:44:23,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124560362] [2020-12-23 13:44:23,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:23,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639109055] [2020-12-23 13:44:23,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:23,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:23,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:23,537 INFO L87 Difference]: Start difference. First operand 56 states and 101 transitions. Second operand 4 states. [2020-12-23 13:44:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,555 INFO L93 Difference]: Finished difference Result 71 states and 125 transitions. [2020-12-23 13:44:23,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:23,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 13:44:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,557 INFO L225 Difference]: With dead ends: 71 [2020-12-23 13:44:23,557 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 13:44:23,558 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 13:44:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 13:44:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 13:44:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 13:44:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2020-12-23 13:44:23,560 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 17 [2020-12-23 13:44:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,560 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2020-12-23 13:44:23,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2020-12-23 13:44:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:23,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:44:23,561 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1988858199, now seen corresponding path program 3 times [2020-12-23 13:44:23,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566343843] [2020-12-23 13:44:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,619 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 13:44:23,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566343843] [2020-12-23 13:44:23,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:23,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617329513] [2020-12-23 13:44:23,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:23,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:23,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:23,624 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand 4 states. [2020-12-23 13:44:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,646 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2020-12-23 13:44:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:23,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 13:44:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,647 INFO L225 Difference]: With dead ends: 28 [2020-12-23 13:44:23,647 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:44:23,647 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 13:44:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:44:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:44:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:44:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:44:23,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-23 13:44:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,654 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:44:23,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:44:23,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:44:23,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:44:23,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:44:23 BasicIcfg [2020-12-23 13:44:23,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:44:23,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:44:23,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:44:23,660 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:44:23,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:17" (3/4) ... [2020-12-23 13:44:23,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:44:23,675 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:44:23,675 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:44:23,675 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:44:23,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:44:23,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:44:23,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:23,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:23,752 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe025_tso.opt.i-witness.graphml [2020-12-23 13:44:23,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:44:23,753 INFO L168 Benchmark]: Toolchain (without parser) took 7739.64 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 128.0 MB in the beginning and 114.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:23,754 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:44:23,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 848.63 ms. Allocated memory is still 154.1 MB. Free memory was 127.8 MB in the beginning and 129.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:23,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.70 ms. Allocated memory is still 154.1 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:23,761 INFO L168 Benchmark]: Boogie Preprocessor took 52.84 ms. Allocated memory is still 154.1 MB. Free memory was 127.2 MB in the beginning and 125.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:23,762 INFO L168 Benchmark]: RCFGBuilder took 625.03 ms. Allocated memory is still 154.1 MB. Free memory was 125.6 MB in the beginning and 103.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:23,762 INFO L168 Benchmark]: TraceAbstraction took 6044.04 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 103.6 MB in the beginning and 117.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 56.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:23,764 INFO L168 Benchmark]: Witness Printer took 93.08 ms. Allocated memory is still 223.3 MB. Free memory was 117.0 MB in the beginning and 114.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:23,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 848.63 ms. Allocated memory is still 154.1 MB. Free memory was 127.8 MB in the beginning and 129.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 64.70 ms. Allocated memory is still 154.1 MB. Free memory was 128.8 MB in the beginning and 127.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.84 ms. Allocated memory is still 154.1 MB. Free memory was 127.2 MB in the beginning and 125.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 625.03 ms. Allocated memory is still 154.1 MB. Free memory was 125.6 MB in the beginning and 103.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6044.04 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 103.6 MB in the beginning and 117.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 56.9 MB. Max. memory is 8.0 GB. * Witness Printer took 93.08 ms. Allocated memory is still 223.3 MB. Free memory was 117.0 MB in the beginning and 114.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 831 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 194 SDtfs, 225 SDslu, 183 SDs, 0 SdLazy, 101 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 82 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4604 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...