/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:06:18,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:06:18,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:06:18,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:06:18,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:06:18,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:06:18,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:06:18,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:06:18,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:06:18,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:06:18,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:06:18,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:06:18,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:06:18,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:06:18,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:06:18,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:06:19,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:06:19,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:06:19,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:06:19,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:06:19,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:06:19,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:06:19,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:06:19,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:06:19,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:06:19,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:06:19,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:06:19,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:06:19,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:06:19,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:06:19,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:06:19,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:06:19,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:06:19,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:06:19,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:06:19,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:06:19,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:06:19,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:06:19,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:06:19,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:06:19,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:06:19,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:06:19,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:06:19,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:06:19,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:06:19,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:06:19,131 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:06:19,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:06:19,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:06:19,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:06:19,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:06:19,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:06:19,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:06:19,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:06:19,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:06:19,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:06:19,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:06:19,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:06:19,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:06:19,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:06:19,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:06:19,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:06:19,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:06:19,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:06:19,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:06:19,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:06:19,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:06:19,136 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:06:19,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:06:19,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:06:19,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:06:19,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:06:19,609 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:06:19,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2020-12-22 11:06:19,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75830c718/6febb15248634574952f5ada0f4d2a57/FLAGd1fae0dce [2020-12-22 11:06:20,460 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:06:20,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2020-12-22 11:06:20,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75830c718/6febb15248634574952f5ada0f4d2a57/FLAGd1fae0dce [2020-12-22 11:06:20,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75830c718/6febb15248634574952f5ada0f4d2a57 [2020-12-22 11:06:20,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:06:20,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:06:20,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:06:20,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:06:20,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:06:20,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:06:20" (1/1) ... [2020-12-22 11:06:20,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa1b077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:20, skipping insertion in model container [2020-12-22 11:06:20,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:06:20" (1/1) ... [2020-12-22 11:06:20,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:06:20,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:06:21,152 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i[950,963] [2020-12-22 11:06:21,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:06:21,474 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:06:21,490 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i[950,963] [2020-12-22 11:06:21,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:06:21,720 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:06:21,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21 WrapperNode [2020-12-22 11:06:21,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:06:21,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:06:21,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:06:21,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:06:21,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:06:21,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:06:21,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:06:21,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:06:21,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... [2020-12-22 11:06:21,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:06:21,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:06:21,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:06:21,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:06:21,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 11:06:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:06:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:06:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:06:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:06:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:06:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:06:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:06:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:06:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:06:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:06:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:06:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:06:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:06:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:06:21,989 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:06:22,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:06:22,423 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:06:22,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:06:22 BoogieIcfgContainer [2020-12-22 11:06:22,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:06:22,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:06:22,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:06:22,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:06:22,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:06:20" (1/3) ... [2020-12-22 11:06:22,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a47b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:06:22, skipping insertion in model container [2020-12-22 11:06:22,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:06:21" (2/3) ... [2020-12-22 11:06:22,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a47b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:06:22, skipping insertion in model container [2020-12-22 11:06:22,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:06:22" (3/3) ... [2020-12-22 11:06:22,435 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-12-22 11:06:22,443 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:06:22,443 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:06:22,449 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:06:22,450 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:06:22,488 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,488 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,489 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,489 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,489 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,489 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,489 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,490 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,490 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,490 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,491 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,492 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,492 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,493 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,493 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,495 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,495 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,496 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,496 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,496 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,496 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,501 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,506 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:06:22,513 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:06:22,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:06:22,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:06:22,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:06:22,562 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:06:22,562 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:06:22,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:06:22,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:06:22,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:06:22,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:06:22,578 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:06:22,581 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:06:22,585 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:06:22,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-22 11:06:22,642 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-22 11:06:22,642 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:06:22,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:06:22,651 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:06:26,205 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 11:06:26,309 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 11:06:26,552 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 11:06:26,660 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 11:06:26,684 INFO L131 LiptonReduction]: Checked pairs total: 2466 [2020-12-22 11:06:26,684 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-22 11:06:26,692 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:06:26,727 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:06:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:06:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:06:26,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:26,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:26,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:26,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1644080523, now seen corresponding path program 1 times [2020-12-22 11:06:26,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:26,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331608014] [2020-12-22 11:06:26,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:27,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331608014] [2020-12-22 11:06:27,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:27,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:06:27,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95907003] [2020-12-22 11:06:27,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:06:27,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:27,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:06:27,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:06:27,035 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:06:27,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:27,073 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:06:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:06:27,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:06:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:27,101 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:06:27,101 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:06:27,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:06:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:06:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:06:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:06:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:06:27,213 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:06:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:27,214 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:06:27,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:06:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:06:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:06:27,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:27,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:27,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:06:27,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:27,218 INFO L82 PathProgramCache]: Analyzing trace with hash 573104580, now seen corresponding path program 1 times [2020-12-22 11:06:27,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:27,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917061706] [2020-12-22 11:06:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:27,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917061706] [2020-12-22 11:06:27,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:27,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:06:27,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724760059] [2020-12-22 11:06:27,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:06:27,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:27,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:06:27,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:06:27,399 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:06:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:27,521 INFO L93 Difference]: Finished difference Result 487 states and 1377 transitions. [2020-12-22 11:06:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:06:27,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:06:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:27,531 INFO L225 Difference]: With dead ends: 487 [2020-12-22 11:06:27,532 INFO L226 Difference]: Without dead ends: 312 [2020-12-22 11:06:27,533 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 [2020-12-22 11:06:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-22 11:06:27,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2020-12-22 11:06:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 11:06:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 672 transitions. [2020-12-22 11:06:27,592 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 672 transitions. Word has length 9 [2020-12-22 11:06:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:27,593 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 672 transitions. [2020-12-22 11:06:27,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:06:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 672 transitions. [2020-12-22 11:06:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:06:27,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:27,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:27,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:06:27,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1603605898, now seen corresponding path program 1 times [2020-12-22 11:06:27,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:27,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354569760] [2020-12-22 11:06:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:27,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354569760] [2020-12-22 11:06:27,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:27,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:06:27,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283449271] [2020-12-22 11:06:27,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:06:27,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:27,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:06:27,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:06:27,803 INFO L87 Difference]: Start difference. First operand 262 states and 672 transitions. Second operand 5 states. [2020-12-22 11:06:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:27,903 INFO L93 Difference]: Finished difference Result 343 states and 850 transitions. [2020-12-22 11:06:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:06:27,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:06:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:27,906 INFO L225 Difference]: With dead ends: 343 [2020-12-22 11:06:27,907 INFO L226 Difference]: Without dead ends: 248 [2020-12-22 11:06:27,907 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 [2020-12-22 11:06:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-12-22 11:06:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 212. [2020-12-22 11:06:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-12-22 11:06:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 529 transitions. [2020-12-22 11:06:27,924 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 529 transitions. Word has length 10 [2020-12-22 11:06:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:27,924 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 529 transitions. [2020-12-22 11:06:27,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:06:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 529 transitions. [2020-12-22 11:06:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:06:27,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:27,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:27,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:06:27,926 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash 996952264, now seen corresponding path program 1 times [2020-12-22 11:06:27,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:27,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578384950] [2020-12-22 11:06:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:28,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578384950] [2020-12-22 11:06:28,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:28,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:06:28,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959035987] [2020-12-22 11:06:28,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:06:28,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:28,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:06:28,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:06:28,047 INFO L87 Difference]: Start difference. First operand 212 states and 529 transitions. Second operand 5 states. [2020-12-22 11:06:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:28,121 INFO L93 Difference]: Finished difference Result 270 states and 659 transitions. [2020-12-22 11:06:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:06:28,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:06:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:28,124 INFO L225 Difference]: With dead ends: 270 [2020-12-22 11:06:28,125 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 11:06:28,125 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 [2020-12-22 11:06:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 11:06:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2020-12-22 11:06:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-22 11:06:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 456 transitions. [2020-12-22 11:06:28,136 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 456 transitions. Word has length 11 [2020-12-22 11:06:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:28,137 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 456 transitions. [2020-12-22 11:06:28,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:06:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 456 transitions. [2020-12-22 11:06:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:06:28,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:28,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:28,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:06:28,142 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash 996954186, now seen corresponding path program 1 times [2020-12-22 11:06:28,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:28,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603923628] [2020-12-22 11:06:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:28,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603923628] [2020-12-22 11:06:28,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:28,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:06:28,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295746224] [2020-12-22 11:06:28,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:06:28,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:28,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:06:28,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:06:28,285 INFO L87 Difference]: Start difference. First operand 188 states and 456 transitions. Second operand 5 states. [2020-12-22 11:06:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:28,354 INFO L93 Difference]: Finished difference Result 248 states and 593 transitions. [2020-12-22 11:06:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:06:28,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:06:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:28,357 INFO L225 Difference]: With dead ends: 248 [2020-12-22 11:06:28,357 INFO L226 Difference]: Without dead ends: 204 [2020-12-22 11:06:28,357 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 [2020-12-22 11:06:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-12-22 11:06:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 164. [2020-12-22 11:06:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-22 11:06:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 383 transitions. [2020-12-22 11:06:28,365 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 383 transitions. Word has length 11 [2020-12-22 11:06:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:28,365 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 383 transitions. [2020-12-22 11:06:28,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:06:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 383 transitions. [2020-12-22 11:06:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:06:28,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:28,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:28,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:06:28,367 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:28,368 INFO L82 PathProgramCache]: Analyzing trace with hash -828726514, now seen corresponding path program 1 times [2020-12-22 11:06:28,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:28,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849341634] [2020-12-22 11:06:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:28,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849341634] [2020-12-22 11:06:28,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:28,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:06:28,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859363850] [2020-12-22 11:06:28,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:06:28,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:28,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:06:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:06:28,449 INFO L87 Difference]: Start difference. First operand 164 states and 383 transitions. Second operand 6 states. [2020-12-22 11:06:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:28,558 INFO L93 Difference]: Finished difference Result 297 states and 697 transitions. [2020-12-22 11:06:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:06:28,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 11:06:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:28,561 INFO L225 Difference]: With dead ends: 297 [2020-12-22 11:06:28,561 INFO L226 Difference]: Without dead ends: 216 [2020-12-22 11:06:28,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:06:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-22 11:06:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 146. [2020-12-22 11:06:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 11:06:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 344 transitions. [2020-12-22 11:06:28,570 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 344 transitions. Word has length 12 [2020-12-22 11:06:28,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:28,570 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 344 transitions. [2020-12-22 11:06:28,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:06:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 344 transitions. [2020-12-22 11:06:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:06:28,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:28,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:28,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:06:28,573 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash 840731782, now seen corresponding path program 2 times [2020-12-22 11:06:28,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:28,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944701384] [2020-12-22 11:06:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:28,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944701384] [2020-12-22 11:06:28,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:28,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:06:28,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955535551] [2020-12-22 11:06:28,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:06:28,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:28,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:06:28,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:06:28,690 INFO L87 Difference]: Start difference. First operand 146 states and 344 transitions. Second operand 5 states. [2020-12-22 11:06:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:28,745 INFO L93 Difference]: Finished difference Result 179 states and 411 transitions. [2020-12-22 11:06:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:06:28,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:06:28,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:28,748 INFO L225 Difference]: With dead ends: 179 [2020-12-22 11:06:28,748 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 11:06:28,749 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 [2020-12-22 11:06:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 11:06:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2020-12-22 11:06:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-22 11:06:28,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 267 transitions. [2020-12-22 11:06:28,759 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 267 transitions. Word has length 12 [2020-12-22 11:06:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:28,760 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 267 transitions. [2020-12-22 11:06:28,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:06:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 267 transitions. [2020-12-22 11:06:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:06:28,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:28,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:28,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:06:28,762 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 274334134, now seen corresponding path program 1 times [2020-12-22 11:06:28,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:28,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176920373] [2020-12-22 11:06:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:28,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176920373] [2020-12-22 11:06:28,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:28,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:06:28,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280362077] [2020-12-22 11:06:28,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:06:28,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:28,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:06:28,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:06:28,883 INFO L87 Difference]: Start difference. First operand 118 states and 267 transitions. Second operand 6 states. [2020-12-22 11:06:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:28,939 INFO L93 Difference]: Finished difference Result 144 states and 312 transitions. [2020-12-22 11:06:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:06:28,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 11:06:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:28,943 INFO L225 Difference]: With dead ends: 144 [2020-12-22 11:06:28,943 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 11:06:28,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:06:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 11:06:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-22 11:06:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 11:06:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2020-12-22 11:06:28,948 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2020-12-22 11:06:28,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:28,948 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2020-12-22 11:06:28,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:06:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2020-12-22 11:06:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:06:28,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:28,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:28,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:06:28,950 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1006670732, now seen corresponding path program 1 times [2020-12-22 11:06:28,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:28,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858873705] [2020-12-22 11:06:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:29,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858873705] [2020-12-22 11:06:29,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:29,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:06:29,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322915568] [2020-12-22 11:06:29,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:06:29,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:29,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:06:29,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:06:29,058 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand 4 states. [2020-12-22 11:06:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:29,084 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2020-12-22 11:06:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:06:29,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 11:06:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:29,085 INFO L225 Difference]: With dead ends: 66 [2020-12-22 11:06:29,085 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 11:06:29,086 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 [2020-12-22 11:06:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 11:06:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 11:06:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 11:06:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-12-22 11:06:29,089 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-12-22 11:06:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:29,090 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-12-22 11:06:29,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:06:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-12-22 11:06:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:06:29,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:29,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:29,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:06:29,091 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash 48994457, now seen corresponding path program 1 times [2020-12-22 11:06:29,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:29,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229839904] [2020-12-22 11:06:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:29,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229839904] [2020-12-22 11:06:29,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:29,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:06:29,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091883042] [2020-12-22 11:06:29,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:06:29,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:29,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:06:29,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:06:29,163 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 5 states. [2020-12-22 11:06:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:29,213 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2020-12-22 11:06:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:06:29,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:06:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:29,215 INFO L225 Difference]: With dead ends: 42 [2020-12-22 11:06:29,215 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 11:06:29,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:06:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 11:06:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 11:06:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 11:06:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2020-12-22 11:06:29,218 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2020-12-22 11:06:29,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:29,218 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2020-12-22 11:06:29,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:06:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2020-12-22 11:06:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:06:29,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:06:29,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:06:29,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:06:29,219 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:06:29,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:06:29,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1602840682, now seen corresponding path program 1 times [2020-12-22 11:06:29,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:06:29,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216176851] [2020-12-22 11:06:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:06:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:06:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:06:29,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216176851] [2020-12-22 11:06:29,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:06:29,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:06:29,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861463660] [2020-12-22 11:06:29,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:06:29,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:06:29,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:06:29,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:06:29,281 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2020-12-22 11:06:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:06:29,304 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-12-22 11:06:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:06:29,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:06:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:06:29,304 INFO L225 Difference]: With dead ends: 28 [2020-12-22 11:06:29,305 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:06:29,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:06:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:06:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:06:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:06:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:06:29,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-22 11:06:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:06:29,306 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:06:29,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:06:29,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:06:29,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:06:29,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:06:29,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:06:29 BasicIcfg [2020-12-22 11:06:29,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:06:29,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:06:29,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:06:29,312 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:06:29,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:06:22" (3/4) ... [2020-12-22 11:06:29,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:06:29,324 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:06:29,325 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:06:29,325 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:06:29,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:06:29,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:06:29,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:06:29,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:06:29,374 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe004_tso.oepc.i-witness.graphml [2020-12-22 11:06:29,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:06:29,376 INFO L168 Benchmark]: Toolchain (without parser) took 8609.70 ms. Allocated memory was 179.3 MB in the beginning and 298.8 MB in the end (delta: 119.5 MB). Free memory was 152.3 MB in the beginning and 260.5 MB in the end (delta: -108.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-12-22 11:06:29,377 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 179.3 MB. Free memory is still 152.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:06:29,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 951.44 ms. Allocated memory is still 179.3 MB. Free memory was 152.1 MB in the beginning and 153.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:06:29,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.30 ms. Allocated memory is still 179.3 MB. Free memory was 153.5 MB in the beginning and 151.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:06:29,378 INFO L168 Benchmark]: Boogie Preprocessor took 63.10 ms. Allocated memory is still 179.3 MB. Free memory was 151.4 MB in the beginning and 150.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:06:29,379 INFO L168 Benchmark]: RCFGBuilder took 543.20 ms. Allocated memory is still 179.3 MB. Free memory was 150.4 MB in the beginning and 128.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:06:29,380 INFO L168 Benchmark]: TraceAbstraction took 6883.37 ms. Allocated memory was 179.3 MB in the beginning and 298.8 MB in the end (delta: 119.5 MB). Free memory was 127.9 MB in the beginning and 263.1 MB in the end (delta: -135.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:06:29,380 INFO L168 Benchmark]: Witness Printer took 62.82 ms. Allocated memory is still 298.8 MB. Free memory was 263.1 MB in the beginning and 260.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:06:29,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 179.3 MB. Free memory is still 152.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 951.44 ms. Allocated memory is still 179.3 MB. Free memory was 152.1 MB in the beginning and 153.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.30 ms. Allocated memory is still 179.3 MB. Free memory was 153.5 MB in the beginning and 151.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.10 ms. Allocated memory is still 179.3 MB. Free memory was 151.4 MB in the beginning and 150.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 543.20 ms. Allocated memory is still 179.3 MB. Free memory was 150.4 MB in the beginning and 128.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6883.37 ms. Allocated memory was 179.3 MB in the beginning and 298.8 MB in the end (delta: 119.5 MB). Free memory was 127.9 MB in the beginning and 263.1 MB in the end (delta: -135.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 62.82 ms. Allocated memory is still 298.8 MB. Free memory was 263.1 MB in the beginning and 260.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 781 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2466 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 257 SDtfs, 278 SDslu, 414 SDs, 0 SdLazy, 180 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 258 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6606 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...