/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/safe028_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:12:31,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:12:31,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:12:31,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:12:31,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:12:31,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:12:31,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:12:31,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:12:31,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:12:31,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:12:31,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:12:31,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:12:31,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:12:31,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:12:31,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:12:31,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:12:31,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:12:31,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:12:31,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:12:31,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:12:31,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:12:31,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:12:31,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:12:31,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:12:31,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:12:31,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:12:31,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:12:31,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:12:31,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:12:31,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:12:31,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:12:31,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:12:31,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:12:31,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:12:31,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:12:31,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:12:31,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:12:31,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:12:31,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:12:31,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:12:31,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:12:31,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:12:31,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:12:31,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:12:31,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:12:31,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:12:31,513 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:12:31,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:12:31,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:12:31,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:12:31,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:12:31,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:12:31,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:12:31,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:12:31,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:12:31,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:12:31,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:12:31,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:12:31,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:12:31,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:12:31,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:12:31,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:12:31,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:12:31,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:12:31,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:12:31,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:12:31,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:12:31,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:12:31,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:12:32,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:12:32,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:12:32,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:12:32,019 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:12:32,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe028_tso.oepc.i [2020-12-22 11:12:32,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3d9e9e7/43049c129d5d4e9180181d52c94fbc33/FLAGab0649190 [2020-12-22 11:12:32,932 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:12:32,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_tso.oepc.i [2020-12-22 11:12:32,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3d9e9e7/43049c129d5d4e9180181d52c94fbc33/FLAGab0649190 [2020-12-22 11:12:33,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3d9e9e7/43049c129d5d4e9180181d52c94fbc33 [2020-12-22 11:12:33,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:12:33,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:12:33,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:33,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:12:33,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:12:33,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f0a80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33, skipping insertion in model container [2020-12-22 11:12:33,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:12:33,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:12:33,470 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/safe028_tso.oepc.i[950,963] [2020-12-22 11:12:33,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:33,736 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:12:33,752 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/safe028_tso.oepc.i[950,963] [2020-12-22 11:12:33,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:33,904 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:12:33,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33 WrapperNode [2020-12-22 11:12:33,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:33,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:33,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:12:33,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:12:33,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:33,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:12:33,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:12:33,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:12:33,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:33,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (1/1) ... [2020-12-22 11:12:34,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:12:34,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:12:34,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:12:34,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:12:34,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (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 11:12:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:12:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:12:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:12:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:12:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:12:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:12:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:12:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:12:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:12:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:12:34,127 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 11:12:34,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:12:34,572 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:12:34,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:34 BoogieIcfgContainer [2020-12-22 11:12:34,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:12:34,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:12:34,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:12:34,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:12:34,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:12:33" (1/3) ... [2020-12-22 11:12:34,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aee29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:34, skipping insertion in model container [2020-12-22 11:12:34,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:33" (2/3) ... [2020-12-22 11:12:34,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aee29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:34, skipping insertion in model container [2020-12-22 11:12:34,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:34" (3/3) ... [2020-12-22 11:12:34,590 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.oepc.i [2020-12-22 11:12:34,600 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:12:34,600 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:12:34,605 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:12:34,607 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:12:34,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,688 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,688 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,689 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,689 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,694 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,694 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,706 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,706 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,728 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,729 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,730 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:34,745 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:12:34,780 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:12:34,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:12:34,829 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:12:34,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:12:34,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:12:34,830 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:12:34,830 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:12:34,830 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:12:34,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:12:34,851 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:12:34,854 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:12:34,858 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:12:34,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-22 11:12:34,975 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-22 11:12:34,976 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:12:34,987 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 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-22 11:12:34,992 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-22 11:12:37,795 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-22 11:12:37,901 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:12:38,087 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-22 11:12:38,231 INFO L131 LiptonReduction]: Checked pairs total: 2149 [2020-12-22 11:12:38,231 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-22 11:12:38,239 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-22 11:12:38,265 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-12-22 11:12:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-12-22 11:12:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:12:38,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:38,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:38,277 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1647971710, now seen corresponding path program 1 times [2020-12-22 11:12:38,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:38,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024202776] [2020-12-22 11:12:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:38,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024202776] [2020-12-22 11:12:38,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:38,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:38,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183883679] [2020-12-22 11:12:38,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:12:38,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:38,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:12:38,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:12:38,535 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-12-22 11:12:38,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:38,570 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-12-22 11:12:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:12:38,572 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:12:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:38,589 INFO L225 Difference]: With dead ends: 274 [2020-12-22 11:12:38,589 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 11:12:38,591 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 11:12:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 11:12:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-22 11:12:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-22 11:12:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-12-22 11:12:38,697 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-12-22 11:12:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:38,705 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-12-22 11:12:38,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:12:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-12-22 11:12:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:12:38,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:38,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:38,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:12:38,709 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:38,712 INFO L82 PathProgramCache]: Analyzing trace with hash -452492411, now seen corresponding path program 1 times [2020-12-22 11:12:38,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:38,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006901375] [2020-12-22 11:12:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:38,983 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 11:12:38,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006901375] [2020-12-22 11:12:38,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:38,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:38,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273968342] [2020-12-22 11:12:38,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:38,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:38,989 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-12-22 11:12:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:39,036 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-12-22 11:12:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:39,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:12:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:39,044 INFO L225 Difference]: With dead ends: 250 [2020-12-22 11:12:39,044 INFO L226 Difference]: Without dead ends: 202 [2020-12-22 11:12:39,045 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 11:12:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-22 11:12:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-22 11:12:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-22 11:12:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-12-22 11:12:39,066 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-12-22 11:12:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:39,067 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-12-22 11:12:39,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-12-22 11:12:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:12:39,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:39,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:39,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:12:39,069 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:39,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1142322672, now seen corresponding path program 1 times [2020-12-22 11:12:39,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:39,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38893185] [2020-12-22 11:12:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:39,195 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 11:12:39,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38893185] [2020-12-22 11:12:39,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:39,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:39,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40118937] [2020-12-22 11:12:39,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:39,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:39,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:39,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:39,199 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-12-22 11:12:39,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:39,266 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-12-22 11:12:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:12:39,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:12:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:39,268 INFO L225 Difference]: With dead ends: 262 [2020-12-22 11:12:39,269 INFO L226 Difference]: Without dead ends: 154 [2020-12-22 11:12:39,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:12:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-22 11:12:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-12-22 11:12:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-22 11:12:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-12-22 11:12:39,284 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-12-22 11:12:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:39,285 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-12-22 11:12:39,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-12-22 11:12:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:12:39,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:39,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:39,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:12:39,287 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2010812812, now seen corresponding path program 1 times [2020-12-22 11:12:39,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:39,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296492326] [2020-12-22 11:12:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:39,338 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 11:12:39,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296492326] [2020-12-22 11:12:39,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:39,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:39,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504270425] [2020-12-22 11:12:39,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:12:39,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:39,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:12:39,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:12:39,341 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 3 states. [2020-12-22 11:12:39,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:39,350 INFO L93 Difference]: Finished difference Result 130 states and 299 transitions. [2020-12-22 11:12:39,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:39,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-22 11:12:39,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:39,352 INFO L225 Difference]: With dead ends: 130 [2020-12-22 11:12:39,352 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 11:12:39,353 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 [2020-12-22 11:12:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 11:12:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-12-22 11:12:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 11:12:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 299 transitions. [2020-12-22 11:12:39,371 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 299 transitions. Word has length 11 [2020-12-22 11:12:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:39,371 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 299 transitions. [2020-12-22 11:12:39,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:12:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 299 transitions. [2020-12-22 11:12:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:12:39,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:39,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:39,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:12:39,373 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash -216590115, now seen corresponding path program 1 times [2020-12-22 11:12:39,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:39,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882235966] [2020-12-22 11:12:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:39,425 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 11:12:39,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882235966] [2020-12-22 11:12:39,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:39,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:39,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863379372] [2020-12-22 11:12:39,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:39,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:39,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:39,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:39,427 INFO L87 Difference]: Start difference. First operand 130 states and 299 transitions. Second operand 4 states. [2020-12-22 11:12:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:39,449 INFO L93 Difference]: Finished difference Result 92 states and 186 transitions. [2020-12-22 11:12:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:39,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:12:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:39,451 INFO L225 Difference]: With dead ends: 92 [2020-12-22 11:12:39,451 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 11:12:39,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 11:12:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-22 11:12:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 11:12:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-12-22 11:12:39,485 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-12-22 11:12:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:39,485 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-12-22 11:12:39,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-12-22 11:12:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:12:39,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:39,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:39,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:12:39,492 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:39,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:39,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1316923756, now seen corresponding path program 1 times [2020-12-22 11:12:39,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:39,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760357629] [2020-12-22 11:12:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:39,603 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 11:12:39,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760357629] [2020-12-22 11:12:39,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:39,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:12:39,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656446430] [2020-12-22 11:12:39,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:39,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:39,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:39,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:39,606 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 5 states. [2020-12-22 11:12:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:39,628 INFO L93 Difference]: Finished difference Result 73 states and 148 transitions. [2020-12-22 11:12:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:39,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 11:12:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:39,630 INFO L225 Difference]: With dead ends: 73 [2020-12-22 11:12:39,630 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 11:12:39,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:39,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 11:12:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-22 11:12:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 11:12:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 148 transitions. [2020-12-22 11:12:39,634 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 148 transitions. Word has length 14 [2020-12-22 11:12:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:39,635 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 148 transitions. [2020-12-22 11:12:39,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:39,635 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 148 transitions. [2020-12-22 11:12:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 11:12:39,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:39,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:39,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:12:39,637 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash 193291591, now seen corresponding path program 1 times [2020-12-22 11:12:39,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:39,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895176] [2020-12-22 11:12:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:39,713 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 11:12:39,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895176] [2020-12-22 11:12:39,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:39,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:12:39,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081004971] [2020-12-22 11:12:39,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:39,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:39,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:39,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:39,716 INFO L87 Difference]: Start difference. First operand 73 states and 148 transitions. Second operand 5 states. [2020-12-22 11:12:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:39,750 INFO L93 Difference]: Finished difference Result 87 states and 170 transitions. [2020-12-22 11:12:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:39,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-22 11:12:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:39,752 INFO L225 Difference]: With dead ends: 87 [2020-12-22 11:12:39,752 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 11:12:39,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:12:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 11:12:39,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 11:12:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 11:12:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-12-22 11:12:39,767 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 17 [2020-12-22 11:12:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:39,768 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-12-22 11:12:39,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-12-22 11:12:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 11:12:39,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:39,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:39,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:12:39,770 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:39,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:39,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1222037843, now seen corresponding path program 2 times [2020-12-22 11:12:39,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:39,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488415500] [2020-12-22 11:12:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:39,894 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 11:12:39,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488415500] [2020-12-22 11:12:39,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:39,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:12:39,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803444458] [2020-12-22 11:12:39,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:39,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:39,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:39,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:39,901 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-12-22 11:12:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:39,931 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-22 11:12:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:39,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-22 11:12:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:39,931 INFO L225 Difference]: With dead ends: 33 [2020-12-22 11:12:39,932 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:12:39,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:12:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:12:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:12:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:12:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:12:39,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-22 11:12:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:39,933 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:12:39,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:12:39,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:12:39,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:12:39,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:12:39 BasicIcfg [2020-12-22 11:12:39,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:12:39,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:12:39,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:12:39,939 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:12:39,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:34" (3/4) ... [2020-12-22 11:12:39,942 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:12:39,950 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:12:39,950 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:12:39,950 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:12:39,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:12:39,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:12:39,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:39,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:40,001 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe028_tso.oepc.i-witness.graphml [2020-12-22 11:12:40,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:12:40,005 INFO L168 Benchmark]: Toolchain (without parser) took 6820.12 ms. Allocated memory was 168.8 MB in the beginning and 227.5 MB in the end (delta: 58.7 MB). Free memory was 142.0 MB in the beginning and 160.9 MB in the end (delta: -18.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:40,006 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:12:40,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.56 ms. Allocated memory is still 168.8 MB. Free memory was 141.6 MB in the beginning and 111.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:40,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.46 ms. Allocated memory is still 168.8 MB. Free memory was 111.2 MB in the beginning and 109.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:40,008 INFO L168 Benchmark]: Boogie Preprocessor took 31.16 ms. Allocated memory is still 168.8 MB. Free memory was 109.1 MB in the beginning and 107.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:40,009 INFO L168 Benchmark]: RCFGBuilder took 573.22 ms. Allocated memory is still 168.8 MB. Free memory was 107.9 MB in the beginning and 85.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:40,009 INFO L168 Benchmark]: TraceAbstraction took 5360.07 ms. Allocated memory was 168.8 MB in the beginning and 227.5 MB in the end (delta: 58.7 MB). Free memory was 84.9 MB in the beginning and 164.0 MB in the end (delta: -79.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:12:40,010 INFO L168 Benchmark]: Witness Printer took 63.24 ms. Allocated memory is still 227.5 MB. Free memory was 163.5 MB in the beginning and 160.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:40,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 720.56 ms. Allocated memory is still 168.8 MB. Free memory was 141.6 MB in the beginning and 111.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.46 ms. Allocated memory is still 168.8 MB. Free memory was 111.2 MB in the beginning and 109.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.16 ms. Allocated memory is still 168.8 MB. Free memory was 109.1 MB in the beginning and 107.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 573.22 ms. Allocated memory is still 168.8 MB. Free memory was 107.9 MB in the beginning and 85.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5360.07 ms. Allocated memory was 168.8 MB in the beginning and 227.5 MB in the end (delta: 58.7 MB). Free memory was 84.9 MB in the beginning and 164.0 MB in the end (delta: -79.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 63.24 ms. Allocated memory is still 227.5 MB. Free memory was 163.5 MB in the beginning and 160.9 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 784 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 2149 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: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 148 SDtfs, 126 SDslu, 207 SDs, 0 SdLazy, 77 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...