/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.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:46:36,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:46:36,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:46:36,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:46:36,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:46:36,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:46:36,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:46:36,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:46:36,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:46:36,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:46:36,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:46:36,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:46:36,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:46:36,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:46:36,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:46:36,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:46:36,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:46:36,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:46:36,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:46:36,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:46:36,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:46:36,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:46:36,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:46:36,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:46:36,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:46:36,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:46:36,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:46:36,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:46:36,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:46:36,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:46:36,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:46:36,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:46:36,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:46:36,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:46:36,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:46:36,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:46:36,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:46:36,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:46:36,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:46:36,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:46:36,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:46:36,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:46:37,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:46:37,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:46:37,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:46:37,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:46:37,010 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:46:37,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:46:37,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:46:37,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:46:37,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:46:37,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:46:37,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:46:37,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:46:37,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:46:37,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:46:37,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:46:37,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:46:37,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:46:37,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:46:37,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:46:37,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:46:37,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:46:37,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:46:37,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:46:37,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:46:37,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:46:37,015 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:46:37,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:46:37,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:46:37,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:46:37,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:46:37,474 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:46:37,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i [2020-12-23 13:46:37,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2764f6040/3bd64414416a4f838c93014d61b138e2/FLAG9096e5e83 [2020-12-23 13:46:38,268 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:46:38,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i [2020-12-23 13:46:38,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2764f6040/3bd64414416a4f838c93014d61b138e2/FLAG9096e5e83 [2020-12-23 13:46:38,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2764f6040/3bd64414416a4f838c93014d61b138e2 [2020-12-23 13:46:38,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:46:38,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:46:38,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:46:38,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:46:38,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:46:38,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:46:38" (1/1) ... [2020-12-23 13:46:38,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b60518a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:38, skipping insertion in model container [2020-12-23 13:46:38,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:46:38" (1/1) ... [2020-12-23 13:46:38,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:46:38,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:46:38,830 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i[952,965] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:46:39,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:46:39,093 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:46:39,110 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i[952,965] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:46:39,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:46:39,304 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:46:39,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39 WrapperNode [2020-12-23 13:46:39,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:46:39,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:46:39,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:46:39,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:46:39,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:46:39,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:46:39,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:46:39,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:46:39,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:46:39,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:46:39,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:46:39,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:46:39,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:46:39,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:46:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:46:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:46:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:46:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:46:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:46:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:46:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:46:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:46:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:46:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:46:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:46:39,540 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:46:39,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:46:39,876 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:46:39,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:39 BoogieIcfgContainer [2020-12-23 13:46:39,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:46:39,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:46:39,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:46:39,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:46:39,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:46:38" (1/3) ... [2020-12-23 13:46:39,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432f1cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:46:39, skipping insertion in model container [2020-12-23 13:46:39,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39" (2/3) ... [2020-12-23 13:46:39,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432f1cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:46:39, skipping insertion in model container [2020-12-23 13:46:39,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:39" (3/3) ... [2020-12-23 13:46:39,889 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.oepc.i [2020-12-23 13:46:39,898 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:46:39,898 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:46:39,903 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:46:39,905 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:46:39,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,985 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,985 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,985 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,985 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,986 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,993 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,993 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,994 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,994 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,994 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,994 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,995 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,995 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:39,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,010 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,010 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,025 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,026 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:40,034 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:46:40,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 13:46:40,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:46:40,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:46:40,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:46:40,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:46:40,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:46:40,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:46:40,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:46:40,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:46:40,094 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:46:40,097 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:40,100 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:40,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:40,147 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-23 13:46:40,148 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:46:40,152 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. [2020-12-23 13:46:40,154 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-23 13:46:42,529 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:46:42,799 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:46:42,908 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2020-12-23 13:46:42,910 INFO L133 LiptonReduction]: Total number of compositions: 55 [2020-12-23 13:46:42,917 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-23 13:46:42,937 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-23 13:46:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-23 13:46:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 13:46:42,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:42,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 13:46:42,949 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2020-12-23 13:46:42,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:42,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757367039] [2020-12-23 13:46:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:43,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757367039] [2020-12-23 13:46:43,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:43,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:46:43,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926490597] [2020-12-23 13:46:43,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:46:43,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:46:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:46:43,235 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-23 13:46:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:43,261 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-23 13:46:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:46:43,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 13:46:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:43,274 INFO L225 Difference]: With dead ends: 90 [2020-12-23 13:46:43,275 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 13:46:43,276 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 [2020-12-23 13:46:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 13:46:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-23 13:46:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 13:46:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-23 13:46:43,325 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-23 13:46:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:43,325 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-23 13:46:43,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:46:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-23 13:46:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 13:46:43,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:43,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:43,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:46:43,327 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:43,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:43,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2020-12-23 13:46:43,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:43,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564485996] [2020-12-23 13:46:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:43,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564485996] [2020-12-23 13:46:43,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:43,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:46:43,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515746108] [2020-12-23 13:46:43,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:46:43,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:43,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:46:43,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:46:43,528 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-23 13:46:43,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:43,566 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-12-23 13:46:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:46:43,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 13:46:43,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:43,568 INFO L225 Difference]: With dead ends: 63 [2020-12-23 13:46:43,568 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 13:46:43,569 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 [2020-12-23 13:46:43,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 13:46:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 13:46:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 13:46:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-12-23 13:46:43,577 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-12-23 13:46:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:43,578 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-12-23 13:46:43,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:46:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-12-23 13:46:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:46:43,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:43,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:43,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:46:43,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:43,580 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2020-12-23 13:46:43,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:43,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809154717] [2020-12-23 13:46:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:43,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809154717] [2020-12-23 13:46:43,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:43,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:43,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261681772] [2020-12-23 13:46:43,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:43,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:43,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:43,672 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-12-23 13:46:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:43,706 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-12-23 13:46:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:43,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:46:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:43,707 INFO L225 Difference]: With dead ends: 36 [2020-12-23 13:46:43,708 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 13:46:43,708 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 [2020-12-23 13:46:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 13:46:43,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 13:46:43,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 13:46:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-12-23 13:46:43,713 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-12-23 13:46:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:43,713 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-12-23 13:46:43,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-12-23 13:46:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:46:43,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:43,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:43,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:46:43,715 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:43,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2020-12-23 13:46:43,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:43,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623212497] [2020-12-23 13:46:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:43,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623212497] [2020-12-23 13:46:43,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:43,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:43,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694996623] [2020-12-23 13:46:43,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:43,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:43,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:43,826 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-12-23 13:46:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:43,861 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-12-23 13:46:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:43,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:46:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:43,863 INFO L225 Difference]: With dead ends: 37 [2020-12-23 13:46:43,863 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 13:46:43,863 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 [2020-12-23 13:46:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 13:46:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 13:46:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 13:46:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 13:46:43,873 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-12-23 13:46:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:43,873 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 13:46:43,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 13:46:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:46:43,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:43,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:43,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:46:43,876 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:43,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2020-12-23 13:46:43,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:43,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545288733] [2020-12-23 13:46:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:43,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545288733] [2020-12-23 13:46:43,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:43,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:43,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197371037] [2020-12-23 13:46:43,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:43,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:43,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:43,988 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-12-23 13:46:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:44,010 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-23 13:46:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:44,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:46:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:44,012 INFO L225 Difference]: With dead ends: 16 [2020-12-23 13:46:44,013 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:46:44,013 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 [2020-12-23 13:46:44,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:46:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:46:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:46:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:46:44,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-23 13:46:44,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:44,014 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:46:44,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:46:44,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:46:44,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:46:44,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:46:44 BasicIcfg [2020-12-23 13:46:44,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:46:44,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:46:44,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:46:44,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:46:44,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:39" (3/4) ... [2020-12-23 13:46:44,025 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:46:44,032 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:46:44,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:46:44,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-23 13:46:44,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:46:44,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:46:44,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:46:44,087 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe036_power.oepc.i-witness.graphml [2020-12-23 13:46:44,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:46:44,089 INFO L168 Benchmark]: Toolchain (without parser) took 5527.11 ms. Allocated memory was 152.0 MB in the beginning and 188.7 MB in the end (delta: 36.7 MB). Free memory was 125.4 MB in the beginning and 95.8 MB in the end (delta: 29.6 MB). Peak memory consumption was 67.8 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:44,089 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 123.0 MB in the beginning and 122.9 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:46:44,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.29 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 132.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 34.3 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:44,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.16 ms. Allocated memory is still 152.0 MB. Free memory was 132.3 MB in the beginning and 130.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:44,097 INFO L168 Benchmark]: Boogie Preprocessor took 26.74 ms. Allocated memory is still 152.0 MB. Free memory was 130.4 MB in the beginning and 129.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:44,098 INFO L168 Benchmark]: RCFGBuilder took 456.50 ms. Allocated memory is still 152.0 MB. Free memory was 129.4 MB in the beginning and 109.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:44,099 INFO L168 Benchmark]: TraceAbstraction took 4139.35 ms. Allocated memory was 152.0 MB in the beginning and 188.7 MB in the end (delta: 36.7 MB). Free memory was 108.9 MB in the beginning and 98.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:44,100 INFO L168 Benchmark]: Witness Printer took 67.03 ms. Allocated memory is still 188.7 MB. Free memory was 98.4 MB in the beginning and 95.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:44,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 123.0 MB in the beginning and 122.9 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 740.29 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 132.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 34.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 85.16 ms. Allocated memory is still 152.0 MB. Free memory was 132.3 MB in the beginning and 130.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.74 ms. Allocated memory is still 152.0 MB. Free memory was 130.4 MB in the beginning and 129.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 456.50 ms. Allocated memory is still 152.0 MB. Free memory was 129.4 MB in the beginning and 109.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4139.35 ms. Allocated memory was 152.0 MB in the beginning and 188.7 MB in the end (delta: 36.7 MB). Free memory was 108.9 MB in the beginning and 98.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * Witness Printer took 67.03 ms. Allocated memory is still 188.7 MB. Free memory was 98.4 MB in the beginning and 95.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 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: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, 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...