/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-Separate.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 12:55:30,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 12:55:30,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 12:55:30,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 12:55:30,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 12:55:30,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 12:55:30,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 12:55:30,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 12:55:30,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 12:55:30,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 12:55:30,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 12:55:30,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 12:55:30,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 12:55:30,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 12:55:30,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 12:55:30,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 12:55:30,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 12:55:30,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 12:55:30,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 12:55:30,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 12:55:30,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 12:55:30,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 12:55:30,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 12:55:30,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 12:55:30,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 12:55:30,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 12:55:30,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 12:55:30,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 12:55:30,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 12:55:30,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 12:55:30,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 12:55:30,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 12:55:30,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 12:55:30,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 12:55:30,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 12:55:30,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 12:55:30,797 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-Separate.epf [2021-06-05 12:55:30,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 12:55:30,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 12:55:30,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 12:55:30,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 12:55:30,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 12:55:30,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 12:55:30,839 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 12:55:30,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 12:55:30,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 12:55:30,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 12:55:30,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 12:55:30,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 12:55:30,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 12:55:30,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 12:55:30,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 12:55:30,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 12:55:30,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 12:55:30,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 12:55:30,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 12:55:30,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:55:30,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 12:55:30,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 12:55:30,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 12:55:30,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 12:55:30,843 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 12:55:30,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 12:55:31,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 12:55:31,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 12:55:31,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 12:55:31,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 12:55:31,189 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 12:55:31,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-06-05 12:55:31,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a8d4108/818deec574474c648f7ac0671aec8e68/FLAGa6d3130b0 [2021-06-05 12:55:31,627 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 12:55:31,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-06-05 12:55:31,627 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:55:31,627 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:55:31,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a8d4108/818deec574474c648f7ac0671aec8e68/FLAGa6d3130b0 [2021-06-05 12:55:32,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a8d4108/818deec574474c648f7ac0671aec8e68 [2021-06-05 12:55:32,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 12:55:32,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 12:55:32,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 12:55:32,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 12:55:32,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 12:55:32,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5f6cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32, skipping insertion in model container [2021-06-05 12:55:32,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 12:55:32,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 12:55:32,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:55:32,220 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 12:55:32,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:55:32,242 INFO L208 MainTranslator]: Completed translation [2021-06-05 12:55:32,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32 WrapperNode [2021-06-05 12:55:32,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 12:55:32,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 12:55:32,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 12:55:32,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 12:55:32,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 12:55:32,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 12:55:32,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 12:55:32,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 12:55:32,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (1/1) ... [2021-06-05 12:55:32,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 12:55:32,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 12:55:32,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 12:55:32,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 12:55:32,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (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 12:55:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 12:55:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-05 12:55:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-05 12:55:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 12:55:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 12:55:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 12:55:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 12:55:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 12:55:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 12:55:32,374 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 12:55:32,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 12:55:32,654 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-06-05 12:55:32,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:55:32 BoogieIcfgContainer [2021-06-05 12:55:32,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 12:55:32,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 12:55:32,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 12:55:32,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 12:55:32,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:55:32" (1/3) ... [2021-06-05 12:55:32,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6116bf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:55:32, skipping insertion in model container [2021-06-05 12:55:32,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:55:32" (2/3) ... [2021-06-05 12:55:32,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6116bf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:55:32, skipping insertion in model container [2021-06-05 12:55:32,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:55:32" (3/3) ... [2021-06-05 12:55:32,682 INFO L111 eAbstractionObserver]: Analyzing ICFG forkJoinInLoop.c [2021-06-05 12:55:32,686 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 12:55:32,687 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 12:55:32,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 12:55:32,687 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 12:55:32,738 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,738 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,738 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,738 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,739 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,739 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,739 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,739 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,739 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,740 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,741 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,742 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,742 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,742 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,742 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:55:32,761 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 12:55:32,782 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 12:55:32,807 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:55:32,807 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:55:32,807 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:55:32,808 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:55:32,808 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:55:32,808 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:55:32,808 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:55:32,808 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 12:55:32,816 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 49 transitions, 106 flow [2021-06-05 12:55:32,831 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 12:55:32,834 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 12:55:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 12:55:32,847 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:32,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:32,848 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:32,856 INFO L82 PathProgramCache]: Analyzing trace with hash -669004956, now seen corresponding path program 1 times [2021-06-05 12:55:32,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:32,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310956338] [2021-06-05 12:55:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:33,016 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 12:55:33,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:33,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310956338] [2021-06-05 12:55:33,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310956338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:55:33,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:55:33,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 12:55:33,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408759918] [2021-06-05 12:55:33,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 12:55:33,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 12:55:33,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 12:55:33,039 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 12:55:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:33,052 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-06-05 12:55:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 12:55:33,054 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 12:55:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:33,060 INFO L225 Difference]: With dead ends: 57 [2021-06-05 12:55:33,061 INFO L226 Difference]: Without dead ends: 57 [2021-06-05 12:55:33,062 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 12:55:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-06-05 12:55:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-06-05 12:55:33,097 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 12:55:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2021-06-05 12:55:33,101 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 12 [2021-06-05 12:55:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:33,102 INFO L482 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2021-06-05 12:55:33,102 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 12:55:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2021-06-05 12:55:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 12:55:33,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:33,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:55:33,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 12:55:33,104 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:33,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1331348325, now seen corresponding path program 1 times [2021-06-05 12:55:33,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:33,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677956772] [2021-06-05 12:55:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:33,208 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 12:55:33,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:33,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677956772] [2021-06-05 12:55:33,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677956772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:55:33,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:55:33,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 12:55:33,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064778364] [2021-06-05 12:55:33,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 12:55:33,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:33,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 12:55:33,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 12:55:33,213 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 12:55:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:33,288 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2021-06-05 12:55:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 12:55:33,291 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 12:55:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:33,294 INFO L225 Difference]: With dead ends: 63 [2021-06-05 12:55:33,295 INFO L226 Difference]: Without dead ends: 63 [2021-06-05 12:55:33,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 12:55:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-06-05 12:55:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-06-05 12:55:33,307 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 12:55:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2021-06-05 12:55:33,314 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 14 [2021-06-05 12:55:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:33,314 INFO L482 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2021-06-05 12:55:33,318 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 12:55:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2021-06-05 12:55:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 12:55:33,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:33,319 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 12:55:33,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 12:55:33,321 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:33,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1101690837, now seen corresponding path program 1 times [2021-06-05 12:55:33,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:33,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601168239] [2021-06-05 12:55:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:33,561 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 12:55:33,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:55:33,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601168239] [2021-06-05 12:55:33,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601168239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:33,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321683119] [2021-06-05 12:55:33,562 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 12:55:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:55:33,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 12:55:33,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:55:33,742 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 12:55:33,746 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:33,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:33,750 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 12:55:33,750 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-06-05 12:55:33,785 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 12:55:33,786 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 12:55:33,797 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:33,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:33,801 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-05 12:55:33,801 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2021-06-05 12:55:33,914 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 12:55:33,917 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:33,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:33,929 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 12:55:33,930 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2021-06-05 12:55:34,097 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 12:55:34,101 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:34,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:34,110 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 12:55:34,110 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:7 [2021-06-05 12:55:34,132 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 12:55:34,136 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 12:55:34,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 12:55:34,139 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 12:55:34,140 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-06-05 12:55:34,148 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 12:55:34,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321683119] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:55:34,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:55:34,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 12:55:34,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710403932] [2021-06-05 12:55:34,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 12:55:34,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:55:34,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 12:55:34,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-06-05 12:55:34,151 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 12:55:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:55:34,550 INFO L93 Difference]: Finished difference Result 143 states and 197 transitions. [2021-06-05 12:55:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 12:55:34,551 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 12:55:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:55:34,553 INFO L225 Difference]: With dead ends: 143 [2021-06-05 12:55:34,553 INFO L226 Difference]: Without dead ends: 143 [2021-06-05 12:55:34,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 421.0ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-06-05 12:55:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-06-05 12:55:34,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 103. [2021-06-05 12:55:34,560 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 12:55:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2021-06-05 12:55:34,562 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 40 [2021-06-05 12:55:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:55:34,562 INFO L482 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2021-06-05 12:55:34,562 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 12:55:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2021-06-05 12:55:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 12:55:34,564 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:55:34,564 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 12:55:34,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 12:55:34,789 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:55:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:55:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1851146609, now seen corresponding path program 2 times [2021-06-05 12:55:34,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:55:34,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432617472] [2021-06-05 12:55:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:55:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:55:34,822 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:55:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:55:34,853 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:55:34,879 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 12:55:34,880 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 12:55:34,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 12:55:34,880 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2021-06-05 12:55:34,883 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 12:55:34,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:55:34 BasicIcfg [2021-06-05 12:55:34,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 12:55:34,941 INFO L168 Benchmark]: Toolchain (without parser) took 2917.28 ms. Allocated memory is still 348.1 MB. Free memory was 310.4 MB in the beginning and 154.0 MB in the end (delta: 156.3 MB). Peak memory consumption was 153.8 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:34,942 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 348.1 MB. Free memory was 328.4 MB in the beginning and 328.3 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:55:34,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.37 ms. Allocated memory is still 348.1 MB. Free memory was 310.2 MB in the beginning and 330.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:34,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.75 ms. Allocated memory is still 348.1 MB. Free memory was 330.2 MB in the beginning and 329.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:55:34,942 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 328.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:34,942 INFO L168 Benchmark]: RCFGBuilder took 355.96 ms. Allocated memory is still 348.1 MB. Free memory was 328.1 MB in the beginning and 310.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:34,943 INFO L168 Benchmark]: TraceAbstraction took 2264.09 ms. Allocated memory is still 348.1 MB. Free memory was 309.2 MB in the beginning and 154.0 MB in the end (delta: 155.2 MB). Peak memory consumption was 155.2 MB. Max. memory is 16.0 GB. [2021-06-05 12:55:34,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 348.1 MB. Free memory was 328.4 MB in the beginning and 328.3 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 216.37 ms. Allocated memory is still 348.1 MB. Free memory was 310.2 MB in the beginning and 330.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.75 ms. Allocated memory is still 348.1 MB. Free memory was 330.2 MB in the beginning and 329.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.57 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 328.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 355.96 ms. Allocated memory is still 348.1 MB. Free memory was 328.1 MB in the beginning and 310.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2264.09 ms. Allocated memory is still 348.1 MB. Free memory was 309.2 MB in the beginning and 154.0 MB in the end (delta: 155.2 MB). Peak memory consumption was 155.2 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: 2075.1ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 18.0ms, AutomataDifference: 526.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 102 SDtfs, 216 SDslu, 290 SDs, 0 SdLazy, 152 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 154.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 457.0ms 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: 54.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 44 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.0ms SsaConstructionTime, 153.4ms SatisfiabilityAnalysisTime, 789.5ms 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...