/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:45:37,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:45:37,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:45:37,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:45:37,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:45:37,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:45:37,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:45:37,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:45:37,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:45:37,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:45:37,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:45:37,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:45:37,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:45:37,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:45:37,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:45:37,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:45:37,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:45:37,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:45:37,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:45:37,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:45:37,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:45:37,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:45:37,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:45:37,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:45:37,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 15:45:37,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 15:45:37,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 15:45:37,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 15:45:37,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 15:45:37,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 15:45:37,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:45:37,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:45:37,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:45:37,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:45:37,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:45:37,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:45:37,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:45:37,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:45:37,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:45:37,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:45:37,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:45:37,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 15:45:37,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:45:37,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:45:37,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:45:37,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:45:37,500 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:45:37,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:45:37,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:45:37,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:45:37,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:45:37,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:45:37,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:45:37,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:45:37,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:45:37,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:45:37,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:45:37,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:45:37,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:45:37,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:45:37,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:45:37,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:45:37,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:45:37,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:45:37,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:45:37,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:45:37,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:45:37,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:45:37,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:45:37,505 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:45:37,505 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:45:37,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:45:37,505 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:45:37,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:45:37,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:45:37,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:45:37,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:45:37,925 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:45:37,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-11-09 15:45:38,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1177c32c0/a972562f95ae46c5992572b06e4ac494/FLAG2e56d0a93 [2020-11-09 15:45:38,846 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:45:38,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-11-09 15:45:38,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1177c32c0/a972562f95ae46c5992572b06e4ac494/FLAG2e56d0a93 [2020-11-09 15:45:39,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1177c32c0/a972562f95ae46c5992572b06e4ac494 [2020-11-09 15:45:39,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:45:39,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:45:39,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:45:39,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:45:39,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:45:39,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:39,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4669e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39, skipping insertion in model container [2020-11-09 15:45:39,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:39,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:45:39,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:45:39,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:45:39,737 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:45:39,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:45:39,963 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:45:39,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39 WrapperNode [2020-11-09 15:45:39,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:45:39,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:45:39,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:45:39,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:45:39,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:39,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:45:40,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:45:40,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:45:40,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:45:40,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (1/1) ... [2020-11-09 15:45:40,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:45:40,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:45:40,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:45:40,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:45:40,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (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 [2020-11-09 15:45:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:45:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:45:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:45:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:45:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:45:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:45:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:45:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:45:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:45:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:45:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:45:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:45:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:45:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:45:40,142 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:45:40,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:45:40,678 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:45:40,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:45:40 BoogieIcfgContainer [2020-11-09 15:45:40,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:45:40,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:45:40,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:45:40,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:45:40,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:45:39" (1/3) ... [2020-11-09 15:45:40,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d903de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:45:40, skipping insertion in model container [2020-11-09 15:45:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:39" (2/3) ... [2020-11-09 15:45:40,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d903de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:45:40, skipping insertion in model container [2020-11-09 15:45:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:45:40" (3/3) ... [2020-11-09 15:45:40,694 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-11-09 15:45:40,714 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:45:40,715 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:45:40,718 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:45:40,719 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:45:40,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,773 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,775 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,780 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,782 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,788 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,788 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,791 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,791 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,802 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,802 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,802 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,803 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,817 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,818 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:40,838 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:45:40,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:45:40,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:45:40,903 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:45:40,903 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:45:40,903 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:45:40,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:45:40,903 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:45:40,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:45:40,904 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:45:40,929 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:45:40,930 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:40,934 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:40,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:41,047 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 15:45:41,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:45:41,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:45:41,062 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:45:44,570 WARN L194 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 15:45:44,696 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:45:44,946 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 15:45:45,066 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:45:45,111 INFO L131 LiptonReduction]: Checked pairs total: 2658 [2020-11-09 15:45:45,112 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 15:45:45,118 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 15:45:45,150 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 15:45:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 15:45:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:45:45,159 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:45,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:45,160 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:45,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1479466227, now seen corresponding path program 1 times [2020-11-09 15:45:45,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:45,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038368334] [2020-11-09 15:45:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:45,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038368334] [2020-11-09 15:45:45,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:45,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:45:45,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1456908387] [2020-11-09 15:45:45,403 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:45,408 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:45,426 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:45:45,426 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:45,432 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:45,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 15:45:45,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:45,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 15:45:45,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:45:45,459 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 15:45:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:45,509 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 15:45:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 15:45:45,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 15:45:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:45,528 INFO L225 Difference]: With dead ends: 362 [2020-11-09 15:45:45,528 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 15:45:45,529 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 [2020-11-09 15:45:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 15:45:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 15:45:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 15:45:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 15:45:45,638 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 15:45:45,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:45,639 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 15:45:45,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 15:45:45,639 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 15:45:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:45:45,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:45,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:45,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:45:45,664 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1381176445, now seen corresponding path program 1 times [2020-11-09 15:45:45,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:45,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092777314] [2020-11-09 15:45:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:45,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092777314] [2020-11-09 15:45:45,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:45,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:45:45,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1630078402] [2020-11-09 15:45:45,791 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:45,792 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:45,794 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 15:45:45,794 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:45,794 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:45,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:45:45,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:45,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:45:45,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:45:45,797 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 15:45:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:45,843 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-11-09 15:45:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:45,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 15:45:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:45,847 INFO L225 Difference]: With dead ends: 346 [2020-11-09 15:45:45,847 INFO L226 Difference]: Without dead ends: 282 [2020-11-09 15:45:45,848 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 [2020-11-09 15:45:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-09 15:45:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-11-09 15:45:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-09 15:45:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-11-09 15:45:45,871 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-11-09 15:45:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:45,872 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-11-09 15:45:45,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:45:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-11-09 15:45:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:45:45,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:45,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:45,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:45:45,874 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:45,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:45,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1310825236, now seen corresponding path program 1 times [2020-11-09 15:45:45,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:45,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765125320] [2020-11-09 15:45:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:46,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765125320] [2020-11-09 15:45:46,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:46,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:45:46,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [869775630] [2020-11-09 15:45:46,005 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:46,006 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:46,008 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-11-09 15:45:46,008 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:46,047 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:45:46,118 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:46,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:45:46,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:46,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:45:46,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:45:46,120 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-11-09 15:45:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:46,157 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-11-09 15:45:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:46,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 15:45:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:46,160 INFO L225 Difference]: With dead ends: 277 [2020-11-09 15:45:46,160 INFO L226 Difference]: Without dead ends: 213 [2020-11-09 15:45:46,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:45:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-11-09 15:45:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-11-09 15:45:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-11-09 15:45:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-11-09 15:45:46,173 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-11-09 15:45:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:46,174 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-11-09 15:45:46,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:45:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-11-09 15:45:46,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:45:46,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:46,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:46,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:45:46,176 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash -346485744, now seen corresponding path program 1 times [2020-11-09 15:45:46,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:46,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284491171] [2020-11-09 15:45:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:46,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284491171] [2020-11-09 15:45:46,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:46,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:45:46,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1936995596] [2020-11-09 15:45:46,267 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:46,268 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:46,271 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-11-09 15:45:46,272 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:46,378 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3403#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:45:46,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 15:45:46,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 15:45:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:45:46,380 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 6 states. [2020-11-09 15:45:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:46,439 INFO L93 Difference]: Finished difference Result 173 states and 387 transitions. [2020-11-09 15:45:46,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:45:46,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-09 15:45:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:46,441 INFO L225 Difference]: With dead ends: 173 [2020-11-09 15:45:46,442 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 15:45:46,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 15:45:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 15:45:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 15:45:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 15:45:46,449 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 15:45:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:46,449 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 15:45:46,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 15:45:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 15:45:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:45:46,453 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:46,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:46,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:45:46,453 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:46,457 INFO L82 PathProgramCache]: Analyzing trace with hash 685431305, now seen corresponding path program 1 times [2020-11-09 15:45:46,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:46,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115947851] [2020-11-09 15:45:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:46,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115947851] [2020-11-09 15:45:46,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:46,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 15:45:46,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1259311862] [2020-11-09 15:45:46,604 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:46,606 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:46,611 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 67 transitions. [2020-11-09 15:45:46,611 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:46,856 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3857#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:45:46,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:45:46,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:46,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:45:46,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:46,858 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 7 states. [2020-11-09 15:45:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:46,917 INFO L93 Difference]: Finished difference Result 119 states and 261 transitions. [2020-11-09 15:45:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:45:46,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 15:45:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:46,919 INFO L225 Difference]: With dead ends: 119 [2020-11-09 15:45:46,919 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 15:45:46,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:45:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 15:45:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 15:45:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 15:45:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 15:45:46,925 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 15:45:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:46,925 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 15:45:46,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:45:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 15:45:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:45:46,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:46,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:46,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:45:46,928 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:46,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:46,928 INFO L82 PathProgramCache]: Analyzing trace with hash 461507696, now seen corresponding path program 1 times [2020-11-09 15:45:46,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:46,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142478895] [2020-11-09 15:45:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:47,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142478895] [2020-11-09 15:45:47,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:47,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:45:47,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1095909293] [2020-11-09 15:45:47,018 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:47,023 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:47,033 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-11-09 15:45:47,033 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:47,049 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:47,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:45:47,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:47,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:45:47,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:45:47,056 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 15:45:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:47,092 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-09 15:45:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:45:47,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:45:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:47,094 INFO L225 Difference]: With dead ends: 135 [2020-11-09 15:45:47,094 INFO L226 Difference]: Without dead ends: 55 [2020-11-09 15:45:47,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:45:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-09 15:45:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-09 15:45:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 15:45:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-09 15:45:47,099 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-11-09 15:45:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:47,100 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-09 15:45:47,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:45:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-09 15:45:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:45:47,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:47,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:47,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:45:47,103 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash 356647694, now seen corresponding path program 2 times [2020-11-09 15:45:47,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:47,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60808774] [2020-11-09 15:45:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:47,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60808774] [2020-11-09 15:45:47,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:47,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:45:47,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1927540016] [2020-11-09 15:45:47,258 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:47,259 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:47,267 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 109 transitions. [2020-11-09 15:45:47,267 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:47,318 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:47,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:45:47,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:45:47,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:45:47,324 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-09 15:45:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:47,381 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-11-09 15:45:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:47,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 15:45:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:47,383 INFO L225 Difference]: With dead ends: 69 [2020-11-09 15:45:47,383 INFO L226 Difference]: Without dead ends: 31 [2020-11-09 15:45:47,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-09 15:45:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-09 15:45:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-09 15:45:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-09 15:45:47,386 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-09 15:45:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:47,386 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-09 15:45:47,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:45:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-09 15:45:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:45:47,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:45:47,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:45:47,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:45:47,388 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:45:47,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:45:47,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1017008488, now seen corresponding path program 3 times [2020-11-09 15:45:47,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:45:47,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676614191] [2020-11-09 15:45:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:45:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:45:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:45:47,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676614191] [2020-11-09 15:45:47,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:45:47,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:45:47,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [253323934] [2020-11-09 15:45:47,492 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:45:47,495 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:45:47,503 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 77 transitions. [2020-11-09 15:45:47,503 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:45:47,517 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:45:47,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:45:47,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:45:47,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:45:47,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:45:47,519 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-11-09 15:45:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:45:47,557 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-09 15:45:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:45:47,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 15:45:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:45:47,558 INFO L225 Difference]: With dead ends: 30 [2020-11-09 15:45:47,558 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:45:47,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:45:47,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:45:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:45:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:45:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:45:47,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 15:45:47,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:45:47,560 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:45:47,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:45:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:45:47,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:45:47,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:45:47,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:45:47 BasicIcfg [2020-11-09 15:45:47,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:45:47,567 INFO L168 Benchmark]: Toolchain (without parser) took 8431.01 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 125.1 MB in the beginning and 157.9 MB in the end (delta: -32.8 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:47,568 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:45:47,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.93 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 130.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:47,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.76 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:47,570 INFO L168 Benchmark]: Boogie Preprocessor took 31.29 ms. Allocated memory is still 151.0 MB. Free memory was 128.5 MB in the beginning and 126.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:47,571 INFO L168 Benchmark]: RCFGBuilder took 624.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 104.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:47,572 INFO L168 Benchmark]: TraceAbstraction took 6879.26 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 103.9 MB in the beginning and 157.9 MB in the end (delta: -54.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:45:47,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 821.93 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 130.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.76 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.29 ms. Allocated memory is still 151.0 MB. Free memory was 128.5 MB in the beginning and 126.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 624.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 104.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6879.26 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 103.9 MB in the beginning and 157.9 MB in the end (delta: -54.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 751 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2658 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 307 SDs, 0 SdLazy, 112 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3540 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...