/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/safe036_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:14:15,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:14:15,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:14:15,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:14:15,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:14:15,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:14:15,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:14:15,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:14:15,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:14:15,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:14:15,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:14:15,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:14:15,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:14:15,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:14:15,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:14:15,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:14:15,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:14:15,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:14:15,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:14:15,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:14:15,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:14:15,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:14:15,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:14:15,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:14:15,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:14:15,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:14:15,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:14:15,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:14:15,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:14:15,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:14:15,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:14:15,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:14:15,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:14:15,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:14:15,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:14:15,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:14:15,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:14:15,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:14:15,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:14:15,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:14:15,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:14:15,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:14:15,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:14:15,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:14:15,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:14:15,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:14:15,363 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:14:15,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:14:15,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:14:15,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:14:15,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:14:15,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:14:15,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:14:15,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:14:15,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:14:15,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:14:15,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:14:15,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:14:15,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:14:15,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:14:15,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:14:15,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:14:15,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:14:15,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:14:15,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:14:15,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:14:15,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:14:15,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:14:15,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:14:15,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:14:15,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:14:15,808 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:14:15,809 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:14:15,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_power.opt.i [2020-12-22 11:14:15,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458b3f17a/d2286a0174d74440ac8fe4ba12f2dfc0/FLAG1b15ddbda [2020-12-22 11:14:16,669 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:14:16,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_power.opt.i [2020-12-22 11:14:16,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458b3f17a/d2286a0174d74440ac8fe4ba12f2dfc0/FLAG1b15ddbda [2020-12-22 11:14:16,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458b3f17a/d2286a0174d74440ac8fe4ba12f2dfc0 [2020-12-22 11:14:16,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:14:16,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:14:16,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:14:16,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:14:16,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:14:16,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:14:16" (1/1) ... [2020-12-22 11:14:16,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f82af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:16, skipping insertion in model container [2020-12-22 11:14:16,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:14:16" (1/1) ... [2020-12-22 11:14:16,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:14:16,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:14:17,251 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/safe036_power.opt.i[951,964] [2020-12-22 11:14:17,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:14:17,635 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:14:17,653 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/safe036_power.opt.i[951,964] [2020-12-22 11:14:17,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:14:17,876 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:14:17,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17 WrapperNode [2020-12-22 11:14:17,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:14:17,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:14:17,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:14:17,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:14:17,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:17,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:17,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:14:17,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:14:17,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:14:17,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:14:17,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:17,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:18,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:18,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:18,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:18,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:18,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (1/1) ... [2020-12-22 11:14:18,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:14:18,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:14:18,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:14:18,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:14:18,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (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 11:14:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:14:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:14:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:14:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:14:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:14:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:14:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:14:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:14:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:14:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:14:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:14:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:14:18,175 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 11:14:18,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:14:18,598 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:14:18,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:14:18 BoogieIcfgContainer [2020-12-22 11:14:18,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:14:18,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:14:18,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:14:18,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:14:18,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:14:16" (1/3) ... [2020-12-22 11:14:18,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5677181a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:14:18, skipping insertion in model container [2020-12-22 11:14:18,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:14:17" (2/3) ... [2020-12-22 11:14:18,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5677181a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:14:18, skipping insertion in model container [2020-12-22 11:14:18,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:14:18" (3/3) ... [2020-12-22 11:14:18,612 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.opt.i [2020-12-22 11:14:18,619 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:14:18,620 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:14:18,625 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:14:18,626 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:14:18,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,664 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,664 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,666 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,667 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,667 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,669 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,669 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,671 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,682 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,682 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,682 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:14:18,686 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:14:18,709 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 11:14:18,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:14:18,737 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:14:18,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:14:18,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:14:18,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:14:18,738 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:14:18,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:14:18,738 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:14:18,755 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:14:18,759 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-22 11:14:18,763 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-22 11:14:18,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-22 11:14:18,837 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-22 11:14:18,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:14:18,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-22 11:14:18,855 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-22 11:14:21,341 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:14:21,672 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:14:21,777 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2020-12-22 11:14:21,777 INFO L133 LiptonReduction]: Total number of compositions: 55 [2020-12-22 11:14:21,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-22 11:14:21,798 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-22 11:14:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-22 11:14:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 11:14:21,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:21,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 11:14:21,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2020-12-22 11:14:21,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:21,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880375503] [2020-12-22 11:14:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:21,992 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 11:14:21,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880375503] [2020-12-22 11:14:21,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:21,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:14:21,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600220815] [2020-12-22 11:14:22,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:14:22,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:14:22,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:14:22,023 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-22 11:14:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:22,051 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-22 11:14:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:14:22,053 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 11:14:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:22,067 INFO L225 Difference]: With dead ends: 90 [2020-12-22 11:14:22,067 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 11:14:22,069 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 11:14:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 11:14:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-22 11:14:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 11:14:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-22 11:14:22,118 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-22 11:14:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:22,118 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-22 11:14:22,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:14:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-22 11:14:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 11:14:22,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:22,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:22,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:14:22,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:22,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2020-12-22 11:14:22,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:22,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745072164] [2020-12-22 11:14:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:14:22,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745072164] [2020-12-22 11:14:22,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:22,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:14:22,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645650678] [2020-12-22 11:14:22,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:14:22,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:22,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:14:22,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:14:22,286 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-22 11:14:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:22,317 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-12-22 11:14:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:14:22,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 11:14:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:22,319 INFO L225 Difference]: With dead ends: 63 [2020-12-22 11:14:22,319 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 11:14:22,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 11:14:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 11:14:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 11:14:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-12-22 11:14:22,328 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-12-22 11:14:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:22,328 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-12-22 11:14:22,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:14:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-12-22 11:14:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:14:22,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:22,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:22,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:14:22,330 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:22,331 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2020-12-22 11:14:22,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:22,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995559482] [2020-12-22 11:14:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:22,417 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 11:14:22,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995559482] [2020-12-22 11:14:22,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:22,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:14:22,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053624047] [2020-12-22 11:14:22,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:14:22,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:22,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:14:22,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:22,421 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-12-22 11:14:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:22,458 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-12-22 11:14:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:22,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:14:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:22,460 INFO L225 Difference]: With dead ends: 36 [2020-12-22 11:14:22,460 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 11:14:22,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 11:14:22,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 11:14:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-22 11:14:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 11:14:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-12-22 11:14:22,469 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-12-22 11:14:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:22,469 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-12-22 11:14:22,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:14:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-12-22 11:14:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:14:22,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:22,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:22,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:14:22,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2020-12-22 11:14:22,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:22,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875445502] [2020-12-22 11:14:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:22,590 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 11:14:22,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875445502] [2020-12-22 11:14:22,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:22,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:14:22,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5774305] [2020-12-22 11:14:22,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:14:22,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:22,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:14:22,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:22,597 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-12-22 11:14:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:22,633 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-12-22 11:14:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:22,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:14:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:22,635 INFO L225 Difference]: With dead ends: 37 [2020-12-22 11:14:22,635 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 11:14:22,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:14:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 11:14:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 11:14:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 11:14:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-22 11:14:22,643 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-12-22 11:14:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:22,643 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-22 11:14:22,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:14:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-22 11:14:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:14:22,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:14:22,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:14:22,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:14:22,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:14:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:14:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2020-12-22 11:14:22,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:14:22,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349761749] [2020-12-22 11:14:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:14:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:14:22,753 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 11:14:22,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349761749] [2020-12-22 11:14:22,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:14:22,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:14:22,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333971607] [2020-12-22 11:14:22,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:14:22,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:14:22,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:14:22,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:14:22,756 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-12-22 11:14:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:14:22,778 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-22 11:14:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:14:22,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:14:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:14:22,782 INFO L225 Difference]: With dead ends: 16 [2020-12-22 11:14:22,782 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:14:22,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:14:22,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:14:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:14:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:14:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:14:22,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-22 11:14:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:14:22,787 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:14:22,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:14:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:14:22,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:14:22,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:14:22,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:14:22 BasicIcfg [2020-12-22 11:14:22,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:14:22,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:14:22,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:14:22,794 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:14:22,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:14:18" (3/4) ... [2020-12-22 11:14:22,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:14:22,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:14:22,807 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:14:22,811 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-22 11:14:22,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:14:22,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:14:22,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:14:22,885 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe036_power.opt.i-witness.graphml [2020-12-22 11:14:22,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:14:22,887 INFO L168 Benchmark]: Toolchain (without parser) took 6002.85 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.9 MB in the beginning and 161.2 MB in the end (delta: -36.4 MB). Peak memory consumption was 97.3 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:22,887 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:14:22,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 990.93 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 127.4 MB in the end (delta: -2.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:22,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.17 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 125.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:22,890 INFO L168 Benchmark]: Boogie Preprocessor took 61.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 124.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:22,892 INFO L168 Benchmark]: RCFGBuilder took 552.38 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 103.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:22,895 INFO L168 Benchmark]: TraceAbstraction took 4189.82 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.8 MB in the beginning and 61.7 MB in the end (delta: 42.2 MB). Peak memory consumption was 73.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:22,896 INFO L168 Benchmark]: Witness Printer took 91.85 ms. Allocated memory is still 181.4 MB. Free memory was 61.7 MB in the beginning and 161.2 MB in the end (delta: -99.6 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:14:22,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 990.93 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 127.4 MB in the end (delta: -2.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 101.17 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 125.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 124.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 552.38 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 103.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4189.82 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.8 MB in the beginning and 61.7 MB in the end (delta: 42.2 MB). Peak memory consumption was 73.1 MB. Max. memory is 8.0 GB. * Witness Printer took 91.85 ms. Allocated memory is still 181.4 MB. Free memory was 61.7 MB in the beginning and 161.2 MB in the end (delta: -99.6 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1354 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 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 63 SDtfs, 62 SDslu, 83 SDs, 0 SdLazy, 34 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...