/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 03:07:31,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:07:31,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:07:31,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 03:07:31,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 03:07:31,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 03:07:31,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 03:07:31,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 03:07:31,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 03:07:31,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 03:07:31,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 03:07:31,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 03:07:31,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 03:07:31,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 03:07:31,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 03:07:31,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 03:07:31,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 03:07:31,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 03:07:31,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 03:07:31,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 03:07:31,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 03:07:31,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 03:07:31,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 03:07:31,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 03:07:31,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 03:07:31,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 03:07:31,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 03:07:31,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 03:07:31,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 03:07:31,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 03:07:31,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 03:07:31,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 03:07:31,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 03:07:31,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 03:07:31,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 03:07:31,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 03:07:31,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 03:07:31,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 03:07:31,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 03:07:31,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 03:07:31,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 03:07:31,576 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-FA-NoLbe.epf [2021-06-05 03:07:31,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:07:31,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:07:31,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:07:31,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:07:31,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:07:31,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:07:31,614 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:07:31,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:07:31,614 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:07:31,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:07:31,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:07:31,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:07:31,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:07:31,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:07:31,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:07:31,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:07:31,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:07:31,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:07:31,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:07:31,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:07:31,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:07:31,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:07:31,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:07:31,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:07:31,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:07:31,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:07:31,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:07:31,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:07:31,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:07:31,617 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:07:31,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:07:31,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:07:31,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:07:31,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:07:31,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:07:31,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 03:07:31,963 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 03:07:31,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-06-05 03:07:32,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2af70504/a104e9b452b34974ad65b5f58bd3c92d/FLAG1e79ad8ae [2021-06-05 03:07:32,436 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 03:07:32,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-06-05 03:07:32,437 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 03:07:32,437 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 03:07:32,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2af70504/a104e9b452b34974ad65b5f58bd3c92d/FLAG1e79ad8ae [2021-06-05 03:07:32,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2af70504/a104e9b452b34974ad65b5f58bd3c92d [2021-06-05 03:07:32,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:07:32,855 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 03:07:32,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 03:07:32,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 03:07:32,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 03:07:32,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 03:07:32" (1/1) ... [2021-06-05 03:07:32,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2795d0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:32, skipping insertion in model container [2021-06-05 03:07:32,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 03:07:32" (1/1) ... [2021-06-05 03:07:32,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 03:07:32,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 03:07:33,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 03:07:33,032 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 03:07:33,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 03:07:33,052 INFO L208 MainTranslator]: Completed translation [2021-06-05 03:07:33,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33 WrapperNode [2021-06-05 03:07:33,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 03:07:33,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:07:33,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:07:33,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:07:33,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:07:33,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:07:33,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:07:33,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:07:33,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (1/1) ... [2021-06-05 03:07:33,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:07:33,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:07:33,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:07:33,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:07:33,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (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 [2021-06-05 03:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 03:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-05 03:07:33,155 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-05 03:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:07:33,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 03:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 03:07:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 03:07:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 03:07:33,157 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 03:07:33,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:07:33,401 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-06-05 03:07:33,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:07:33 BoogieIcfgContainer [2021-06-05 03:07:33,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:07:33,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:07:33,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:07:33,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:07:33,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 03:07:32" (1/3) ... [2021-06-05 03:07:33,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110452b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:07:33, skipping insertion in model container [2021-06-05 03:07:33,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:07:33" (2/3) ... [2021-06-05 03:07:33,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110452b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:07:33, skipping insertion in model container [2021-06-05 03:07:33,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:07:33" (3/3) ... [2021-06-05 03:07:33,409 INFO L111 eAbstractionObserver]: Analyzing ICFG forkJoinInLoop.c [2021-06-05 03:07:33,413 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:07:33,414 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:07:33,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:07:33,414 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:07:33,434 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,434 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,434 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,435 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,435 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,435 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,435 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,435 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,435 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,436 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,437 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,438 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,438 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,438 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,438 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:07:33,462 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 03:07:33,479 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 03:07:33,529 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:07:33,529 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:07:33,530 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:07:33,530 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:07:33,530 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:07:33,530 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:07:33,530 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:07:33,530 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:07:33,539 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 49 transitions, 106 flow [2021-06-05 03:07:33,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 64 states have internal predecessors, (84), 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) [2021-06-05 03:07:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 64 states have internal predecessors, (84), 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) [2021-06-05 03:07:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:07:33,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:33,557 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:33,558 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash -669004956, now seen corresponding path program 1 times [2021-06-05 03:07:33,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:33,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445305749] [2021-06-05 03:07:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:33,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:33,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445305749] [2021-06-05 03:07:33,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445305749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:07:33,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:07:33,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 03:07:33,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081137152] [2021-06-05 03:07:33,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 03:07:33,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:33,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 03:07:33,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 03:07:33,750 INFO L87 Difference]: Start difference. First operand has 65 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 64 states have internal predecessors, (84), 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-06-05 03:07:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:33,764 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-06-05 03:07:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 03:07:33,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) Word has length 12 [2021-06-05 03:07:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:33,772 INFO L225 Difference]: With dead ends: 57 [2021-06-05 03:07:33,773 INFO L226 Difference]: Without dead ends: 57 [2021-06-05 03:07:33,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 03:07:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-06-05 03:07:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-06-05 03:07:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 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) [2021-06-05 03:07:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2021-06-05 03:07:33,808 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 12 [2021-06-05 03:07:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:33,808 INFO L482 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2021-06-05 03:07:33,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-06-05 03:07:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2021-06-05 03:07:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 03:07:33,809 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:33,809 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:33,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:07:33,810 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:33,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1331348325, now seen corresponding path program 1 times [2021-06-05 03:07:33,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:33,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984361176] [2021-06-05 03:07:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:33,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:33,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984361176] [2021-06-05 03:07:33,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984361176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:07:33,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:07:33,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 03:07:33,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327244449] [2021-06-05 03:07:33,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 03:07:33,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:33,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 03:07:33,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 03:07:33,887 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-06-05 03:07:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:33,933 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2021-06-05 03:07:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 03:07:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2021-06-05 03:07:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:33,935 INFO L225 Difference]: With dead ends: 63 [2021-06-05 03:07:33,935 INFO L226 Difference]: Without dead ends: 63 [2021-06-05 03:07:33,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 03:07:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-06-05 03:07:33,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-06-05 03:07:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 58 states have internal predecessors, (77), 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) [2021-06-05 03:07:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2021-06-05 03:07:33,943 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 14 [2021-06-05 03:07:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:33,944 INFO L482 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2021-06-05 03:07:33,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-06-05 03:07:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2021-06-05 03:07:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 03:07:33,945 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:33,945 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:33,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 03:07:33,946 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:33,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1101690837, now seen corresponding path program 1 times [2021-06-05 03:07:33,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:33,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519976702] [2021-06-05 03:07:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:34,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:07:34,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519976702] [2021-06-05 03:07:34,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519976702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:34,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600911725] [2021-06-05 03:07:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:07:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:07:34,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:07:34,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:07:34,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-06-05 03:07:34,285 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,287 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:34,288 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,288 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-06-05 03:07:34,323 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 03:07:34,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-06-05 03:07:34,331 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:34,334 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,334 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2021-06-05 03:07:34,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-06-05 03:07:34,458 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:34,469 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,470 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2021-06-05 03:07:34,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 03:07:34,550 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:34,555 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,555 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:7 [2021-06-05 03:07:34,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-05 03:07:34,568 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 03:07:34,570 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-05 03:07:34,570 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-06-05 03:07:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:07:34,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600911725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:07:34,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:07:34,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 03:07:34,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368763152] [2021-06-05 03:07:34,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 03:07:34,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:07:34,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 03:07:34,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-06-05 03:07:34,576 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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) [2021-06-05 03:07:34,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:07:34,851 INFO L93 Difference]: Finished difference Result 143 states and 197 transitions. [2021-06-05 03:07:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 03:07:34,852 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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) Word has length 40 [2021-06-05 03:07:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:07:34,854 INFO L225 Difference]: With dead ends: 143 [2021-06-05 03:07:34,854 INFO L226 Difference]: Without dead ends: 143 [2021-06-05 03:07:34,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 251.7ms TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-06-05 03:07:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-06-05 03:07:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 103. [2021-06-05 03:07:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3627450980392157) internal successors, (139), 102 states have internal predecessors, (139), 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) [2021-06-05 03:07:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2021-06-05 03:07:34,865 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 40 [2021-06-05 03:07:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:07:34,865 INFO L482 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2021-06-05 03:07:34,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 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) [2021-06-05 03:07:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2021-06-05 03:07:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 03:07:34,867 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:07:34,867 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:07:35,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 03:07:35,093 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:07:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:07:35,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1851146609, now seen corresponding path program 2 times [2021-06-05 03:07:35,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:07:35,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176111821] [2021-06-05 03:07:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:07:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:07:35,143 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:07:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:07:35,189 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:07:35,217 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 03:07:35,217 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 03:07:35,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 03:07:35,220 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 03:07:35,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:07:35 BasicIcfg [2021-06-05 03:07:35,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:07:35,269 INFO L168 Benchmark]: Toolchain (without parser) took 2407.32 ms. Allocated memory is still 362.8 MB. Free memory was 325.2 MB in the beginning and 165.6 MB in the end (delta: 159.6 MB). Peak memory consumption was 158.0 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:35,269 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 362.8 MB. Free memory is still 343.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:07:35,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.23 ms. Allocated memory is still 362.8 MB. Free memory was 325.0 MB in the beginning and 344.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:35,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 362.8 MB. Free memory was 344.9 MB in the beginning and 343.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:07:35,270 INFO L168 Benchmark]: Boogie Preprocessor took 15.72 ms. Allocated memory is still 362.8 MB. Free memory was 343.9 MB in the beginning and 342.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:35,270 INFO L168 Benchmark]: RCFGBuilder took 309.00 ms. Allocated memory is still 362.8 MB. Free memory was 342.8 MB in the beginning and 325.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:35,270 INFO L168 Benchmark]: TraceAbstraction took 1858.04 ms. Allocated memory is still 362.8 MB. Free memory was 323.9 MB in the beginning and 165.6 MB in the end (delta: 158.3 MB). Peak memory consumption was 157.3 MB. Max. memory is 16.0 GB. [2021-06-05 03:07:35,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 362.8 MB. Free memory is still 343.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 195.23 ms. Allocated memory is still 362.8 MB. Free memory was 325.0 MB in the beginning and 344.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 362.8 MB. Free memory was 344.9 MB in the beginning and 343.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.72 ms. Allocated memory is still 362.8 MB. Free memory was 343.9 MB in the beginning and 342.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 309.00 ms. Allocated memory is still 362.8 MB. Free memory was 342.8 MB in the beginning and 325.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1858.04 ms. Allocated memory is still 362.8 MB. Free memory was 323.9 MB in the beginning and 165.6 MB in the end (delta: 158.3 MB). Peak memory consumption was 157.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L19] 0 pthread_t thread_id; [L21] 0 int x = 1; [L23] EXPR 0 \read(x) [L23] COND TRUE 0 x < 3 [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND TRUE 0 x < 3 VAL [i={5:0}, i={5:0}, y=4] [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND FALSE 0 !(x < 3) VAL [i={5:0}, i={5:0}, y=4] [L30] 0 CodeAnnotStmt[Assertion] VAL [i={5:0}, i={5:0}, y=4] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1707.1ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 10.0ms, AutomataDifference: 371.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 102 SDtfs, 216 SDslu, 290 SDs, 0 SdLazy, 152 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 275.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 44 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.7ms SsaConstructionTime, 146.9ms SatisfiabilityAnalysisTime, 611.9ms InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 8 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 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 incorrect! Received shutdown request...