/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/04-if-else.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:39:22,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:39:22,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:39:22,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:39:22,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:39:22,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:39:22,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:39:22,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:39:22,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:39:22,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:39:22,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:39:22,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:39:22,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:39:22,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:39:22,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:39:22,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:39:22,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:39:22,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:39:22,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:39:22,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:39:22,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:39:22,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:39:22,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:39:22,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:39:22,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 07:39:22,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 07:39:22,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 07:39:22,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 07:39:22,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 07:39:22,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 07:39:22,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:39:22,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:39:22,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:39:22,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:39:22,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:39:22,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:39:22,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:39:22,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:39:22,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:39:22,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:39:22,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:39:22,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 07:39:22,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:39:22,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:39:22,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:39:22,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:39:22,585 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:39:22,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:39:22,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:39:22,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:39:22,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:39:22,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:39:22,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:39:22,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:39:22,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:39:22,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:39:22,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:39:22,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:39:22,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:39:22,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:39:22,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:39:22,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:39:22,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:39:22,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:39:22,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:39:22,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:39:22,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:39:22,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:39:22,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:39:22,590 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:39:22,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:39:22,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:39:22,591 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:39:22,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:39:22,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:39:22,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:39:22,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 07:39:22,968 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 07:39:22,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/04-if-else.c [2021-03-25 07:39:23,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6fdcc44b/65a2df159a08451a928d9b0b364c8803/FLAG71adafdbf [2021-03-25 07:39:23,454 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 07:39:23,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/04-if-else.c [2021-03-25 07:39:23,454 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:39:23,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6fdcc44b/65a2df159a08451a928d9b0b364c8803/FLAG71adafdbf [2021-03-25 07:39:23,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6fdcc44b/65a2df159a08451a928d9b0b364c8803 [2021-03-25 07:39:23,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:39:23,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 07:39:23,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:23,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 07:39:24,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 07:39:24,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:23" (1/1) ... [2021-03-25 07:39:24,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc1e8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24, skipping insertion in model container [2021-03-25 07:39:24,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:23" (1/1) ... [2021-03-25 07:39:24,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 07:39:24,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 07:39:24,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:24,130 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 07:39:24,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:24,158 INFO L208 MainTranslator]: Completed translation [2021-03-25 07:39:24,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24 WrapperNode [2021-03-25 07:39:24,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:24,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:24,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:39:24,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:39:24,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:24,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:39:24,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:39:24,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:39:24,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (1/1) ... [2021-03-25 07:39:24,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:39:24,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:39:24,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:39:24,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:39:24,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (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 [2021-03-25 07:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 07:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 07:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 07:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 07:39:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 07:39:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:39:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:39:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 07:39:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 07:39:24,280 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:39:24,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:39:24,531 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 07:39:24,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:24 BoogieIcfgContainer [2021-03-25 07:39:24,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:39:24,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:39:24,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:39:24,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:39:24,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 07:39:23" (1/3) ... [2021-03-25 07:39:24,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1c1c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:24, skipping insertion in model container [2021-03-25 07:39:24,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:24" (2/3) ... [2021-03-25 07:39:24,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1c1c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:24, skipping insertion in model container [2021-03-25 07:39:24,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:24" (3/3) ... [2021-03-25 07:39:24,539 INFO L111 eAbstractionObserver]: Analyzing ICFG 04-if-else.c [2021-03-25 07:39:24,543 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:39:24,547 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:39:24,547 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:39:24,580 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,581 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,581 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,581 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,584 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,584 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:24,587 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:39:24,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 07:39:24,622 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:39:24,622 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:39:24,622 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:39:24,622 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:39:24,622 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:39:24,622 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:39:24,622 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:39:24,622 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:39:24,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 51 flow [2021-03-25 07:39:24,663 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-25 07:39:24,664 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:24,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:39:24,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 51 flow [2021-03-25 07:39:24,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 37 flow [2021-03-25 07:39:24,676 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:24,683 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 17 transitions, 37 flow [2021-03-25 07:39:24,687 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 17 transitions, 37 flow [2021-03-25 07:39:24,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 37 flow [2021-03-25 07:39:24,699 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 07:39:24,699 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:24,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:39:24,702 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-25 07:39:25,178 INFO L154 LiptonReduction]: Checked pairs total: 22 [2021-03-25 07:39:25,179 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 07:39:25,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 505 [2021-03-25 07:39:25,188 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:39:25,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:25,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:25,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:39:25,189 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1421532913, now seen corresponding path program 1 times [2021-03-25 07:39:25,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:25,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417696538] [2021-03-25 07:39:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:25,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:25,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:25,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:25,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:25,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:25,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:39:25,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417696538] [2021-03-25 07:39:25,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:25,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:39:25,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826431106] [2021-03-25 07:39:25,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 07:39:25,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 07:39:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 07:39:25,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 32 [2021-03-25 07:39:25,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 19 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:25,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 32 [2021-03-25 07:39:25,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:25,362 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 07:39:25,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:25,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 10 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:25,364 INFO L132 encePairwiseOnDemand]: 28/32 looper letters, 1 selfloop transitions, 3 changer transitions 2/10 dead transitions. [2021-03-25 07:39:25,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 35 flow [2021-03-25 07:39:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 07:39:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 07:39:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2021-03-25 07:39:25,373 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7 [2021-03-25 07:39:25,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 112 transitions. [2021-03-25 07:39:25,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 112 transitions. [2021-03-25 07:39:25,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:25,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 112 transitions. [2021-03-25 07:39:25,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,383 INFO L185 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 5 states and 112 transitions. [2021-03-25 07:39:25,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 35 flow [2021-03-25 07:39:25,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 34 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:39:25,386 INFO L241 Difference]: Finished difference. Result has 16 places, 8 transitions, 28 flow [2021-03-25 07:39:25,388 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2021-03-25 07:39:25,389 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, 4 predicate places. [2021-03-25 07:39:25,389 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:25,389 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 8 transitions, 28 flow [2021-03-25 07:39:25,389 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 8 transitions, 28 flow [2021-03-25 07:39:25,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 15 places, 8 transitions, 28 flow [2021-03-25 07:39:25,392 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-25 07:39:25,392 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:39:25,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 8 events. 0/8 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:25,392 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 07:39:25,647 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 07:39:25,647 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:39:25,648 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 259 [2021-03-25 07:39:25,648 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 5 transitions, 22 flow [2021-03-25 07:39:25,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:25,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:39:25,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:39:25,649 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:25,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1117846763, now seen corresponding path program 1 times [2021-03-25 07:39:25,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:25,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791905513] [2021-03-25 07:39:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:25,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:25,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:25,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:25,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:39:25,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791905513] [2021-03-25 07:39:25,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:25,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:25,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34621972] [2021-03-25 07:39:25,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:39:25,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:25,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:39:25,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:39:25,676 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 35 [2021-03-25 07:39:25,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 5 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:25,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 35 [2021-03-25 07:39:25,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:25,681 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-25 07:39:25,682 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 07:39:25,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 4 events. 0/4 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:25,682 INFO L132 encePairwiseOnDemand]: 33/35 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-03-25 07:39:25,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 4 transitions, 24 flow [2021-03-25 07:39:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:39:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:39:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2021-03-25 07:39:25,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-03-25 07:39:25,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 70 transitions. [2021-03-25 07:39:25,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 70 transitions. [2021-03-25 07:39:25,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:25,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 70 transitions. [2021-03-25 07:39:25,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,685 INFO L185 Difference]: Start difference. First operand has 12 places, 5 transitions, 22 flow. Second operand 3 states and 70 transitions. [2021-03-25 07:39:25,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 4 transitions, 24 flow [2021-03-25 07:39:25,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 16 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 07:39:25,686 INFO L241 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:25,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2021-03-25 07:39:25,687 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, -3 predicate places. [2021-03-25 07:39:25,687 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:25,687 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:25,687 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:25,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:25,687 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:39:25,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:25,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 07:39:25,688 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:39:25,688 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:39:25,688 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:39:25,688 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 07:39:25,689 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:25,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:25,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:39:25,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:39:25 BasicIcfg [2021-03-25 07:39:25,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:39:25,693 INFO L168 Benchmark]: Toolchain (without parser) took 1695.98 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 234.3 MB in the beginning and 356.0 MB in the end (delta: -121.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:25,694 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:25,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.49 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 233.7 MB in the beginning and 364.1 MB in the end (delta: -130.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:25,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 379.6 MB. Free memory was 364.1 MB in the beginning and 362.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:25,695 INFO L168 Benchmark]: Boogie Preprocessor took 20.30 ms. Allocated memory is still 379.6 MB. Free memory was 362.3 MB in the beginning and 361.4 MB in the end (delta: 929.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:25,700 INFO L168 Benchmark]: RCFGBuilder took 317.35 ms. Allocated memory is still 379.6 MB. Free memory was 361.4 MB in the beginning and 348.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:25,701 INFO L168 Benchmark]: TraceAbstraction took 1158.02 ms. Allocated memory is still 379.6 MB. Free memory was 347.7 MB in the beginning and 356.0 MB in the end (delta: -8.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:25,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 161.49 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 233.7 MB in the beginning and 364.1 MB in the end (delta: -130.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 379.6 MB. Free memory was 364.1 MB in the beginning and 362.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.30 ms. Allocated memory is still 379.6 MB. Free memory was 362.3 MB in the beginning and 361.4 MB in the end (delta: 929.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 317.35 ms. Allocated memory is still 379.6 MB. Free memory was 361.4 MB in the beginning and 348.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1158.02 ms. Allocated memory is still 379.6 MB. Free memory was 347.7 MB in the beginning and 356.0 MB in the end (delta: -8.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 491.4ms, 21 PlacesBefore, 12 PlacesAfterwards, 17 TransitionsBefore, 8 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 258.4ms, 16 PlacesBefore, 12 PlacesAfterwards, 8 TransitionsBefore, 5 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 9 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1073.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 68.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 563.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 1 SDslu, 2 SDs, 0 SdLazy, 4 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.0ms SsaConstructionTime, 21.2ms SatisfiabilityAnalysisTime, 57.9ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...