/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:13:21,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:13:21,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:13:21,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:13:21,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:13:21,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:13:21,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:13:21,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:13:21,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:13:21,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:13:21,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:13:21,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:13:21,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:13:21,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:13:21,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:13:21,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:13:21,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:13:21,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:13:21,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:13:21,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:13:21,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:13:21,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:13:21,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:13:21,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:13:21,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 11:13:21,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:13:21,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:13:21,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:13:21,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:13:21,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:13:21,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:13:21,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:13:21,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:13:21,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:13:21,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:13:21,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:13:21,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:13:21,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:13:21,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:13:21,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:13:21,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:13:21,232 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:13:21,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:13:21,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:13:21,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:13:21,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:13:21,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:13:21,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:13:21,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:13:21,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:13:21,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:13:21,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:13:21,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:13:21,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:13:21,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:13:21,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:13:21,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:13:21,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:13:21,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:13:21,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:13:21,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:13:21,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:13:21,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:13:21,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:13:21,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:13:21,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:13:21,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:13:21,689 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:13:21,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i [2020-12-22 11:13:21,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4c0b172/c35ea6f3f6684c02bcb07a83e85b49d7/FLAGd531b26bc [2020-12-22 11:13:22,698 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:13:22,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i [2020-12-22 11:13:22,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4c0b172/c35ea6f3f6684c02bcb07a83e85b49d7/FLAGd531b26bc [2020-12-22 11:13:22,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4c0b172/c35ea6f3f6684c02bcb07a83e85b49d7 [2020-12-22 11:13:22,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:13:22,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:13:22,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:13:22,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:13:22,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:13:22,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:13:22" (1/1) ... [2020-12-22 11:13:22,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ced60f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:22, skipping insertion in model container [2020-12-22 11:13:22,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:13:22" (1/1) ... [2020-12-22 11:13:22,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:13:23,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:13:23,263 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/safe031_tso.oepc.i[950,963] [2020-12-22 11:13:23,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:13:23,530 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:13:23,549 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/safe031_tso.oepc.i[950,963] [2020-12-22 11:13:23,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:13:23,758 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:13:23,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23 WrapperNode [2020-12-22 11:13:23,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:13:23,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:13:23,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:13:23,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:13:23,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:13:23,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:13:23,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:13:23,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:13:23,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (1/1) ... [2020-12-22 11:13:23,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:13:23,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:13:23,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:13:23,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:13:23,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (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 11:13:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:13:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:13:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:13:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:13:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:13:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:13:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:13:23,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:13:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:13:23,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:13:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:13:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:13:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:13:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:13:23,957 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 11:13:24,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:13:24,514 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:13:24,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:24 BoogieIcfgContainer [2020-12-22 11:13:24,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:13:24,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:13:24,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:13:24,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:13:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:13:22" (1/3) ... [2020-12-22 11:13:24,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57806610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:24, skipping insertion in model container [2020-12-22 11:13:24,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:13:23" (2/3) ... [2020-12-22 11:13:24,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57806610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:24, skipping insertion in model container [2020-12-22 11:13:24,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:24" (3/3) ... [2020-12-22 11:13:24,528 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-12-22 11:13:24,538 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:13:24,538 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:13:24,545 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:13:24,546 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:13:24,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,599 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,599 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,601 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,601 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,601 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,601 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,607 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,609 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,609 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,610 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,610 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,616 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,616 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,622 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,622 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:13:24,643 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:13:24,664 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:13:24,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:13:24,697 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:13:24,697 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:13:24,697 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:13:24,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:13:24,697 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:13:24,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:13:24,698 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:13:24,711 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:13:24,714 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:13:24,717 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-22 11:13:24,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-22 11:13:24,763 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-22 11:13:24,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:13:24,768 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 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:13:24,771 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:13:27,573 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 11:13:27,871 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 11:13:27,982 INFO L131 LiptonReduction]: Checked pairs total: 2656 [2020-12-22 11:13:27,983 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-12-22 11:13:27,990 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:13:28,023 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:13:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:13:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:13:28,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:28,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:28,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:28,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:28,041 INFO L82 PathProgramCache]: Analyzing trace with hash -73223859, now seen corresponding path program 1 times [2020-12-22 11:13:28,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:28,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465492747] [2020-12-22 11:13:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:28,251 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 11:13:28,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465492747] [2020-12-22 11:13:28,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:28,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:13:28,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473040051] [2020-12-22 11:13:28,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:13:28,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:28,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:13:28,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:13:28,286 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:13:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:28,343 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:13:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:13:28,344 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:13:28,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:28,362 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:13:28,362 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:13:28,364 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 11:13:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:13:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:13:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:13:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:13:28,440 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:13:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:28,441 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:13:28,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:13:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:13:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:13:28,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:28,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:28,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:13:28,444 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:28,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2025018626, now seen corresponding path program 1 times [2020-12-22 11:13:28,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:28,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082920559] [2020-12-22 11:13:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:28,674 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 11:13:28,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082920559] [2020-12-22 11:13:28,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:28,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:13:28,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171254034] [2020-12-22 11:13:28,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:13:28,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:28,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:13:28,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:13:28,680 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:13:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:28,755 INFO L93 Difference]: Finished difference Result 556 states and 1507 transitions. [2020-12-22 11:13:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:28,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:13:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:28,765 INFO L225 Difference]: With dead ends: 556 [2020-12-22 11:13:28,765 INFO L226 Difference]: Without dead ends: 414 [2020-12-22 11:13:28,766 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 11:13:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-12-22 11:13:28,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 338. [2020-12-22 11:13:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-22 11:13:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 924 transitions. [2020-12-22 11:13:28,827 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 924 transitions. Word has length 9 [2020-12-22 11:13:28,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:28,827 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 924 transitions. [2020-12-22 11:13:28,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:13:28,828 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 924 transitions. [2020-12-22 11:13:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:13:28,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:28,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:28,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:13:28,830 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash 642582749, now seen corresponding path program 1 times [2020-12-22 11:13:28,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:28,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793781695] [2020-12-22 11:13:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:29,033 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 11:13:29,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793781695] [2020-12-22 11:13:29,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:29,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:29,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313897999] [2020-12-22 11:13:29,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:29,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:29,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:29,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:29,048 INFO L87 Difference]: Start difference. First operand 338 states and 924 transitions. Second operand 5 states. [2020-12-22 11:13:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:29,120 INFO L93 Difference]: Finished difference Result 464 states and 1199 transitions. [2020-12-22 11:13:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:29,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:13:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:29,125 INFO L225 Difference]: With dead ends: 464 [2020-12-22 11:13:29,125 INFO L226 Difference]: Without dead ends: 390 [2020-12-22 11:13:29,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:13:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-12-22 11:13:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 326. [2020-12-22 11:13:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-12-22 11:13:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 880 transitions. [2020-12-22 11:13:29,141 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 880 transitions. Word has length 10 [2020-12-22 11:13:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:29,141 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 880 transitions. [2020-12-22 11:13:29,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 880 transitions. [2020-12-22 11:13:29,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:13:29,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:29,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:29,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:13:29,144 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:29,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:29,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1648891103, now seen corresponding path program 1 times [2020-12-22 11:13:29,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:29,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089136464] [2020-12-22 11:13:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:29,225 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 11:13:29,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089136464] [2020-12-22 11:13:29,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:29,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:29,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117507335] [2020-12-22 11:13:29,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:29,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:29,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:29,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:29,229 INFO L87 Difference]: Start difference. First operand 326 states and 880 transitions. Second operand 5 states. [2020-12-22 11:13:29,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:29,297 INFO L93 Difference]: Finished difference Result 440 states and 1121 transitions. [2020-12-22 11:13:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:29,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:13:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:29,301 INFO L225 Difference]: With dead ends: 440 [2020-12-22 11:13:29,301 INFO L226 Difference]: Without dead ends: 362 [2020-12-22 11:13:29,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:13:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-12-22 11:13:29,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 298. [2020-12-22 11:13:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:13:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 794 transitions. [2020-12-22 11:13:29,315 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 794 transitions. Word has length 10 [2020-12-22 11:13:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:29,315 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 794 transitions. [2020-12-22 11:13:29,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 794 transitions. [2020-12-22 11:13:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:13:29,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:29,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:29,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:13:29,318 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:29,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:29,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1554730330, now seen corresponding path program 1 times [2020-12-22 11:13:29,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:29,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108444858] [2020-12-22 11:13:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:29,366 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 11:13:29,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108444858] [2020-12-22 11:13:29,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:29,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:13:29,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620677071] [2020-12-22 11:13:29,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:13:29,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:29,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:13:29,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:13:29,369 INFO L87 Difference]: Start difference. First operand 298 states and 794 transitions. Second operand 3 states. [2020-12-22 11:13:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:29,380 INFO L93 Difference]: Finished difference Result 237 states and 555 transitions. [2020-12-22 11:13:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:13:29,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-22 11:13:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:29,382 INFO L225 Difference]: With dead ends: 237 [2020-12-22 11:13:29,382 INFO L226 Difference]: Without dead ends: 237 [2020-12-22 11:13:29,383 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 11:13:29,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-22 11:13:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-12-22 11:13:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-22 11:13:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 555 transitions. [2020-12-22 11:13:29,391 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 555 transitions. Word has length 11 [2020-12-22 11:13:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:29,392 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 555 transitions. [2020-12-22 11:13:29,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:13:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 555 transitions. [2020-12-22 11:13:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:13:29,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:29,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:29,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:13:29,394 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:29,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:29,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1718582767, now seen corresponding path program 1 times [2020-12-22 11:13:29,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:29,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501183815] [2020-12-22 11:13:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:29,449 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 11:13:29,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501183815] [2020-12-22 11:13:29,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:29,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:13:29,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919445880] [2020-12-22 11:13:29,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:13:29,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:29,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:13:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:13:29,452 INFO L87 Difference]: Start difference. First operand 237 states and 555 transitions. Second operand 4 states. [2020-12-22 11:13:29,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:29,478 INFO L93 Difference]: Finished difference Result 164 states and 343 transitions. [2020-12-22 11:13:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:13:29,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 11:13:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:29,480 INFO L225 Difference]: With dead ends: 164 [2020-12-22 11:13:29,480 INFO L226 Difference]: Without dead ends: 160 [2020-12-22 11:13:29,481 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 11:13:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-22 11:13:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2020-12-22 11:13:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-22 11:13:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 303 transitions. [2020-12-22 11:13:29,488 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 303 transitions. Word has length 13 [2020-12-22 11:13:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:29,488 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 303 transitions. [2020-12-22 11:13:29,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:13:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-12-22 11:13:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:13:29,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:29,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:29,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:13:29,490 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash 669066047, now seen corresponding path program 1 times [2020-12-22 11:13:29,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:29,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49629154] [2020-12-22 11:13:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:29,604 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 11:13:29,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49629154] [2020-12-22 11:13:29,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:29,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:29,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042579890] [2020-12-22 11:13:29,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:29,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:29,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:29,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:29,607 INFO L87 Difference]: Start difference. First operand 148 states and 303 transitions. Second operand 5 states. [2020-12-22 11:13:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:29,682 INFO L93 Difference]: Finished difference Result 184 states and 367 transitions. [2020-12-22 11:13:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:13:29,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:13:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:29,684 INFO L225 Difference]: With dead ends: 184 [2020-12-22 11:13:29,684 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 11:13:29,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 11:13:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 11:13:29,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 111. [2020-12-22 11:13:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 11:13:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 212 transitions. [2020-12-22 11:13:29,689 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 212 transitions. Word has length 15 [2020-12-22 11:13:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:29,690 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 212 transitions. [2020-12-22 11:13:29,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:29,690 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 212 transitions. [2020-12-22 11:13:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:13:29,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:29,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:29,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:13:29,691 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:29,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:29,692 INFO L82 PathProgramCache]: Analyzing trace with hash 660741003, now seen corresponding path program 1 times [2020-12-22 11:13:29,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:29,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863753962] [2020-12-22 11:13:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:29,769 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 11:13:29,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863753962] [2020-12-22 11:13:29,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:29,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:29,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023748426] [2020-12-22 11:13:29,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:29,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:29,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:29,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:29,772 INFO L87 Difference]: Start difference. First operand 111 states and 212 transitions. Second operand 5 states. [2020-12-22 11:13:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:29,807 INFO L93 Difference]: Finished difference Result 152 states and 279 transitions. [2020-12-22 11:13:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:29,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:13:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:29,810 INFO L225 Difference]: With dead ends: 152 [2020-12-22 11:13:29,810 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 11:13:29,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:13:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 11:13:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2020-12-22 11:13:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 11:13:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 209 transitions. [2020-12-22 11:13:29,815 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 209 transitions. Word has length 15 [2020-12-22 11:13:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:29,815 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 209 transitions. [2020-12-22 11:13:29,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 209 transitions. [2020-12-22 11:13:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:13:29,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:13:29,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:13:29,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:13:29,817 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:13:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:13:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2129101485, now seen corresponding path program 2 times [2020-12-22 11:13:29,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:13:29,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800594388] [2020-12-22 11:13:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:13:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:13:29,862 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 11:13:29,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800594388] [2020-12-22 11:13:29,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:13:29,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:13:29,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461061750] [2020-12-22 11:13:29,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:13:29,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:13:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:13:29,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:13:29,865 INFO L87 Difference]: Start difference. First operand 110 states and 209 transitions. Second operand 5 states. [2020-12-22 11:13:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:13:29,904 INFO L93 Difference]: Finished difference Result 88 states and 174 transitions. [2020-12-22 11:13:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:13:29,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:13:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:13:29,905 INFO L225 Difference]: With dead ends: 88 [2020-12-22 11:13:29,905 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:13:29,905 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 11:13:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:13:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:13:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:13:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:13:29,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-22 11:13:29,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:13:29,907 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:13:29,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:13:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:13:29,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:13:29,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:13:29,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:13:29 BasicIcfg [2020-12-22 11:13:29,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:13:29,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:13:29,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:13:29,913 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:13:29,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:24" (3/4) ... [2020-12-22 11:13:29,918 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:13:29,925 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:13:29,925 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:13:29,925 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:13:29,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:13:29,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:13:29,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:13:29,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:13:29,983 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe031_tso.oepc.i-witness.graphml [2020-12-22 11:13:29,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:13:29,985 INFO L168 Benchmark]: Toolchain (without parser) took 7031.72 ms. Allocated memory was 159.4 MB in the beginning and 232.8 MB in the end (delta: 73.4 MB). Free memory was 133.6 MB in the beginning and 206.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:29,986 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:13:29,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.47 ms. Allocated memory is still 159.4 MB. Free memory was 133.5 MB in the beginning and 134.0 MB in the end (delta: -535.7 kB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:29,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.58 ms. Allocated memory is still 159.4 MB. Free memory was 134.0 MB in the beginning and 132.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:29,988 INFO L168 Benchmark]: Boogie Preprocessor took 29.03 ms. Allocated memory is still 159.4 MB. Free memory was 132.3 MB in the beginning and 130.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:29,988 INFO L168 Benchmark]: RCFGBuilder took 677.84 ms. Allocated memory is still 159.4 MB. Free memory was 130.9 MB in the beginning and 108.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:29,989 INFO L168 Benchmark]: TraceAbstraction took 5392.60 ms. Allocated memory was 159.4 MB in the beginning and 232.8 MB in the end (delta: 73.4 MB). Free memory was 108.3 MB in the beginning and 208.8 MB in the end (delta: -100.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:13:29,990 INFO L168 Benchmark]: Witness Printer took 71.56 ms. Allocated memory is still 232.8 MB. Free memory was 208.8 MB in the beginning and 206.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:13:29,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 801.47 ms. Allocated memory is still 159.4 MB. Free memory was 133.5 MB in the beginning and 134.0 MB in the end (delta: -535.7 kB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.58 ms. Allocated memory is still 159.4 MB. Free memory was 134.0 MB in the beginning and 132.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.03 ms. Allocated memory is still 159.4 MB. Free memory was 132.3 MB in the beginning and 130.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 677.84 ms. Allocated memory is still 159.4 MB. Free memory was 130.9 MB in the beginning and 108.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5392.60 ms. Allocated memory was 159.4 MB in the beginning and 232.8 MB in the end (delta: 73.4 MB). Free memory was 108.3 MB in the beginning and 208.8 MB in the end (delta: -100.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 71.56 ms. Allocated memory is still 232.8 MB. Free memory was 208.8 MB in the beginning and 206.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 730 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 2656 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: 5.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 218 SDtfs, 192 SDslu, 300 SDs, 0 SdLazy, 115 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 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, 9 MinimizatonAttempts, 270 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...