/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/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 18:24:24,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 18:24:24,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 18:24:24,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 18:24:24,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 18:24:24,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 18:24:24,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 18:24:24,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 18:24:24,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 18:24:24,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 18:24:24,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 18:24:24,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 18:24:24,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 18:24:24,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 18:24:24,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 18:24:24,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 18:24:24,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 18:24:24,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 18:24:24,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 18:24:24,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 18:24:24,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 18:24:24,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 18:24:24,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 18:24:24,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 18:24:24,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 18:24:24,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 18:24:24,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 18:24:24,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 18:24:24,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 18:24:24,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 18:24:24,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 18:24:24,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 18:24:24,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 18:24:24,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 18:24:24,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 18:24:24,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 18:24:24,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 18:24:24,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 18:24:24,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 18:24:24,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 18:24:24,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 18:24:24,655 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 18:24:24,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 18:24:24,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 18:24:24,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 18:24:24,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 18:24:24,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 18:24:24,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 18:24:24,698 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 18:24:24,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 18:24:24,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 18:24:24,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 18:24:24,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 18:24:24,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 18:24:24,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 18:24:24,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 18:24:24,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 18:24:24,700 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 18:24:24,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 18:24:24,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 18:24:24,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 18:24:24,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 18:24:24,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 18:24:24,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 18:24:24,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 18:24:24,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 18:24:24,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 18:24:24,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 18:24:24,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 18:24:24,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 18:24:24,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 18:24:24,702 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 18:24:24,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 18:24:24,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 18:24:24,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 18:24:24,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 18:24:25,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 18:24:25,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 18:24:25,001 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 18:24:25,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-06-05 18:24:25,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75da41a1b/4699470b829141bd9c894c87958a29a3/FLAGc0343307f [2021-06-05 18:24:25,501 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 18:24:25,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-06-05 18:24:25,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75da41a1b/4699470b829141bd9c894c87958a29a3/FLAGc0343307f [2021-06-05 18:24:26,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75da41a1b/4699470b829141bd9c894c87958a29a3 [2021-06-05 18:24:26,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 18:24:26,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 18:24:26,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 18:24:26,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 18:24:26,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 18:24:26,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc3ea2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26, skipping insertion in model container [2021-06-05 18:24:26,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 18:24:26,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 18:24:26,454 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2021-06-05 18:24:26,458 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2021-06-05 18:24:26,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 18:24:26,475 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 18:24:26,512 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2021-06-05 18:24:26,513 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2021-06-05 18:24:26,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 18:24:26,597 INFO L208 MainTranslator]: Completed translation [2021-06-05 18:24:26,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26 WrapperNode [2021-06-05 18:24:26,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 18:24:26,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 18:24:26,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 18:24:26,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 18:24:26,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 18:24:26,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 18:24:26,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 18:24:26,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 18:24:26,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (1/1) ... [2021-06-05 18:24:26,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 18:24:26,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 18:24:26,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 18:24:26,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 18:24:26,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (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 18:24:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2021-06-05 18:24:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2021-06-05 18:24:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 18:24:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2021-06-05 18:24:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2021-06-05 18:24:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 18:24:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-05 18:24:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 18:24:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 18:24:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 18:24:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 18:24:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 18:24:26,780 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 18:24:27,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 18:24:27,122 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 18:24:27,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:24:27 BoogieIcfgContainer [2021-06-05 18:24:27,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 18:24:27,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 18:24:27,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 18:24:27,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 18:24:27,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 06:24:26" (1/3) ... [2021-06-05 18:24:27,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3d8039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:24:27, skipping insertion in model container [2021-06-05 18:24:27,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 06:24:26" (2/3) ... [2021-06-05 18:24:27,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3d8039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:24:27, skipping insertion in model container [2021-06-05 18:24:27,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:24:27" (3/3) ... [2021-06-05 18:24:27,130 INFO L111 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2021-06-05 18:24:27,135 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 18:24:27,135 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 18:24:27,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-05 18:24:27,136 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 18:24:27,162 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,162 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,162 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,162 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,163 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,163 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,163 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,163 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,163 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,164 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,164 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,164 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,164 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,164 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,165 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,165 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,165 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,165 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,166 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,166 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,166 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,166 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,167 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,167 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,167 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,167 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,167 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,167 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,167 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,168 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,168 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,168 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,169 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,169 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,169 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,169 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,171 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,171 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,171 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,172 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,172 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,176 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,176 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,176 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,176 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,176 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,177 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 18:24:27,184 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 18:24:27,202 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:27,218 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:27,219 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:27,219 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:27,219 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:27,219 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:27,219 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:27,219 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:27,219 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == de_allocatorThread1of1ForFork0======== [2021-06-05 18:24:27,228 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 96 transitions, 214 flow [2021-06-05 18:24:27,286 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 18:24:27,316 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:27,317 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:27,317 INFO L430 AbstractCegarLoop]: === Iteration 1 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:27,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1390554518, now seen corresponding path program 1 times [2021-06-05 18:24:27,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:27,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165964524] [2021-06-05 18:24:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:27,518 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 18:24:27,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:27,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165964524] [2021-06-05 18:24:27,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165964524] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:27,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:27,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:27,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389524085] [2021-06-05 18:24:27,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:27,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:27,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:27,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:27,545 INFO L87 Difference]: Start difference. First operand has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 18:24:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:27,618 INFO L93 Difference]: Finished difference Result 1156 states and 2831 transitions. [2021-06-05 18:24:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:27,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-06-05 18:24:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:27,644 INFO L225 Difference]: With dead ends: 1156 [2021-06-05 18:24:27,645 INFO L226 Difference]: Without dead ends: 429 [2021-06-05 18:24:27,646 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-06-05 18:24:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-06-05 18:24:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 427 states have (on average 2.309133489461358) internal successors, (986), 428 states have internal predecessors, (986), 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 18:24:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 986 transitions. [2021-06-05 18:24:27,728 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 986 transitions. Word has length 49 [2021-06-05 18:24:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:27,729 INFO L482 AbstractCegarLoop]: Abstraction has 429 states and 986 transitions. [2021-06-05 18:24:27,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 18:24:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 986 transitions. [2021-06-05 18:24:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 18:24:27,731 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:27,732 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:27,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 18:24:27,732 INFO L430 AbstractCegarLoop]: === Iteration 2 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:27,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:27,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1883981591, now seen corresponding path program 1 times [2021-06-05 18:24:27,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:27,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191863398] [2021-06-05 18:24:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:27,807 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 18:24:27,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:27,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191863398] [2021-06-05 18:24:27,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191863398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:27,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:27,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:27,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876906005] [2021-06-05 18:24:27,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:27,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:27,811 INFO L87 Difference]: Start difference. First operand 429 states and 986 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 18:24:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:27,820 INFO L93 Difference]: Finished difference Result 429 states and 956 transitions. [2021-06-05 18:24:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-06-05 18:24:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:27,823 INFO L225 Difference]: With dead ends: 429 [2021-06-05 18:24:27,823 INFO L226 Difference]: Without dead ends: 429 [2021-06-05 18:24:27,823 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-06-05 18:24:27,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-06-05 18:24:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 427 states have (on average 2.2388758782201403) internal successors, (956), 428 states have internal predecessors, (956), 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 18:24:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 956 transitions. [2021-06-05 18:24:27,839 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 956 transitions. Word has length 54 [2021-06-05 18:24:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:27,840 INFO L482 AbstractCegarLoop]: Abstraction has 429 states and 956 transitions. [2021-06-05 18:24:27,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 18:24:27,840 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 956 transitions. [2021-06-05 18:24:27,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 18:24:27,842 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:27,842 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:27,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 18:24:27,842 INFO L430 AbstractCegarLoop]: === Iteration 3 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:27,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:27,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1122358077, now seen corresponding path program 1 times [2021-06-05 18:24:27,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:27,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189918512] [2021-06-05 18:24:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:27,926 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 18:24:27,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:27,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189918512] [2021-06-05 18:24:27,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189918512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:27,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:27,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:27,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286300087] [2021-06-05 18:24:27,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:27,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:27,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:27,928 INFO L87 Difference]: Start difference. First operand 429 states and 956 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:24:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:27,937 INFO L93 Difference]: Finished difference Result 429 states and 944 transitions. [2021-06-05 18:24:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:27,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-06-05 18:24:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:27,939 INFO L225 Difference]: With dead ends: 429 [2021-06-05 18:24:27,939 INFO L226 Difference]: Without dead ends: 363 [2021-06-05 18:24:27,940 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-06-05 18:24:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2021-06-05 18:24:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 2.182825484764543) internal successors, (788), 362 states have internal predecessors, (788), 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 18:24:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 788 transitions. [2021-06-05 18:24:27,950 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 788 transitions. Word has length 59 [2021-06-05 18:24:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:27,951 INFO L482 AbstractCegarLoop]: Abstraction has 363 states and 788 transitions. [2021-06-05 18:24:27,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:24:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 788 transitions. [2021-06-05 18:24:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 18:24:27,952 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:27,952 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:27,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 18:24:27,952 INFO L430 AbstractCegarLoop]: === Iteration 4 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:27,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1223682229, now seen corresponding path program 2 times [2021-06-05 18:24:27,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:27,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513273343] [2021-06-05 18:24:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:28,013 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 18:24:28,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:28,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513273343] [2021-06-05 18:24:28,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513273343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:28,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:28,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:28,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510111751] [2021-06-05 18:24:28,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:28,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:28,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:28,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:28,015 INFO L87 Difference]: Start difference. First operand 363 states and 788 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:24:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:28,055 INFO L93 Difference]: Finished difference Result 214 states and 436 transitions. [2021-06-05 18:24:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 18:24:28,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-06-05 18:24:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:28,057 INFO L225 Difference]: With dead ends: 214 [2021-06-05 18:24:28,057 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 18:24:28,057 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 18:24:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 18:24:28,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 18:24:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 18:24:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 18:24:28,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-05 18:24:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:28,058 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 18:24:28,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:24:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 18:24:28,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:28,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 18:24:28,059 INFO L301 ceAbstractionStarter]: Result for error location de_allocatorThread1of1ForFork0 was SAFE (1/5) [2021-06-05 18:24:28,061 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:28,062 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:28,062 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:28,062 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:28,062 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:28,062 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:28,062 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:28,062 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:28,063 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == allocator======== [2021-06-05 18:24:28,064 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 96 transitions, 214 flow [2021-06-05 18:24:28,095 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:28,105 INFO L301 ceAbstractionStarter]: Result for error location allocator was SAFE (2/5) [2021-06-05 18:24:28,105 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:28,110 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:28,111 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:28,111 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:28,111 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:28,111 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:28,111 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:28,111 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:28,111 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == de_allocator======== [2021-06-05 18:24:28,120 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 96 transitions, 214 flow [2021-06-05 18:24:28,175 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:28,218 INFO L301 ceAbstractionStarter]: Result for error location de_allocator was SAFE (3/5) [2021-06-05 18:24:28,220 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 18:24:28,221 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:28,221 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:28,221 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:28,221 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:28,221 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:28,221 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:28,221 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:28,221 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 18:24:28,223 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 96 transitions, 214 flow [2021-06-05 18:24:28,242 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:28,247 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-05 18:24:28,248 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 18:24:28,248 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 18:24:28,249 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 18:24:28,249 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 18:24:28,249 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 18:24:28,249 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 18:24:28,249 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 18:24:28,249 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 18:24:28,249 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == allocatorThread1of1ForFork1======== [2021-06-05 18:24:28,250 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 96 transitions, 214 flow [2021-06-05 18:24:28,269 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 18:24:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-06-05 18:24:28,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:28,272 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-06-05 18:24:28,272 INFO L430 AbstractCegarLoop]: === Iteration 1 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:28,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:28,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1944255627, now seen corresponding path program 1 times [2021-06-05 18:24:28,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:28,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420808292] [2021-06-05 18:24:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:28,327 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 18:24:28,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:28,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420808292] [2021-06-05 18:24:28,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420808292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:28,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:28,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:28,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239804089] [2021-06-05 18:24:28,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:28,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:28,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:28,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:28,331 INFO L87 Difference]: Start difference. First operand has 1183 states, 1179 states have (on average 2.6802374893977947) internal successors, (3160), 1182 states have internal predecessors, (3160), 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 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:24:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:28,349 INFO L93 Difference]: Finished difference Result 1051 states and 2612 transitions. [2021-06-05 18:24:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:28,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-06-05 18:24:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:28,354 INFO L225 Difference]: With dead ends: 1051 [2021-06-05 18:24:28,355 INFO L226 Difference]: Without dead ends: 777 [2021-06-05 18:24:28,355 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-06-05 18:24:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2021-06-05 18:24:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 775 states have (on average 2.4890322580645163) internal successors, (1929), 776 states have internal predecessors, (1929), 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 18:24:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1929 transitions. [2021-06-05 18:24:28,376 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1929 transitions. Word has length 43 [2021-06-05 18:24:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:28,376 INFO L482 AbstractCegarLoop]: Abstraction has 777 states and 1929 transitions. [2021-06-05 18:24:28,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:24:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1929 transitions. [2021-06-05 18:24:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 18:24:28,377 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:28,377 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:28,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 18:24:28,378 INFO L430 AbstractCegarLoop]: === Iteration 2 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1041569185, now seen corresponding path program 1 times [2021-06-05 18:24:28,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:28,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329828111] [2021-06-05 18:24:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:28,435 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 18:24:28,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:28,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329828111] [2021-06-05 18:24:28,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329828111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:28,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:28,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:28,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270470271] [2021-06-05 18:24:28,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:28,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:28,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:28,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:28,438 INFO L87 Difference]: Start difference. First operand 777 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 18:24:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:28,459 INFO L93 Difference]: Finished difference Result 756 states and 1831 transitions. [2021-06-05 18:24:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:28,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-06-05 18:24:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:28,463 INFO L225 Difference]: With dead ends: 756 [2021-06-05 18:24:28,463 INFO L226 Difference]: Without dead ends: 415 [2021-06-05 18:24:28,463 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-06-05 18:24:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-06-05 18:24:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 413 states have (on average 2.2106537530266346) internal successors, (913), 414 states have internal predecessors, (913), 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 18:24:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 913 transitions. [2021-06-05 18:24:28,479 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 913 transitions. Word has length 48 [2021-06-05 18:24:28,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:28,479 INFO L482 AbstractCegarLoop]: Abstraction has 415 states and 913 transitions. [2021-06-05 18:24:28,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 18:24:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 913 transitions. [2021-06-05 18:24:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 18:24:28,480 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:28,480 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:28,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 18:24:28,480 INFO L430 AbstractCegarLoop]: === Iteration 3 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1271259847, now seen corresponding path program 1 times [2021-06-05 18:24:28,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:28,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427111583] [2021-06-05 18:24:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:28,509 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 18:24:28,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:28,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427111583] [2021-06-05 18:24:28,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427111583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:28,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:28,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 18:24:28,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990198281] [2021-06-05 18:24:28,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 18:24:28,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:28,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 18:24:28,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:28,511 INFO L87 Difference]: Start difference. First operand 415 states and 913 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:24:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:28,517 INFO L93 Difference]: Finished difference Result 415 states and 897 transitions. [2021-06-05 18:24:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-06-05 18:24:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:28,519 INFO L225 Difference]: With dead ends: 415 [2021-06-05 18:24:28,519 INFO L226 Difference]: Without dead ends: 327 [2021-06-05 18:24:28,519 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 18:24:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-06-05 18:24:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-06-05 18:24:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 2.12) internal successors, (689), 326 states have internal predecessors, (689), 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 18:24:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 689 transitions. [2021-06-05 18:24:28,528 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 689 transitions. Word has length 59 [2021-06-05 18:24:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:28,528 INFO L482 AbstractCegarLoop]: Abstraction has 327 states and 689 transitions. [2021-06-05 18:24:28,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:24:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 689 transitions. [2021-06-05 18:24:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 18:24:28,529 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 18:24:28,529 INFO L554 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 18:24:28,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 18:24:28,529 INFO L430 AbstractCegarLoop]: === Iteration 4 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 18:24:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 18:24:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash -646855687, now seen corresponding path program 2 times [2021-06-05 18:24:28,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 18:24:28,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652373798] [2021-06-05 18:24:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 18:24:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 18:24:28,563 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 18:24:28,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 18:24:28,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652373798] [2021-06-05 18:24:28,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652373798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 18:24:28,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 18:24:28,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 18:24:28,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225735503] [2021-06-05 18:24:28,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 18:24:28,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 18:24:28,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 18:24:28,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:28,565 INFO L87 Difference]: Start difference. First operand 327 states and 689 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:24:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 18:24:28,582 INFO L93 Difference]: Finished difference Result 194 states and 385 transitions. [2021-06-05 18:24:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 18:24:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-06-05 18:24:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 18:24:28,583 INFO L225 Difference]: With dead ends: 194 [2021-06-05 18:24:28,583 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 18:24:28,583 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 18:24:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 18:24:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 18:24:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 18:24:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 18:24:28,584 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-05 18:24:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 18:24:28,584 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 18:24:28,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:24:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 18:24:28,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 18:24:28,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 18:24:28,585 INFO L301 ceAbstractionStarter]: Result for error location allocatorThread1of1ForFork1 was SAFE (5/5) [2021-06-05 18:24:28,585 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 18:24:28,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:24:28 BasicIcfg [2021-06-05 18:24:28,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 18:24:28,589 INFO L168 Benchmark]: Toolchain (without parser) took 2554.25 ms. Allocated memory is still 356.5 MB. Free memory was 319.3 MB in the beginning and 255.5 MB in the end (delta: 63.8 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:28,589 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 356.5 MB. Free memory is still 337.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:24:28,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.20 ms. Allocated memory is still 356.5 MB. Free memory was 319.1 MB in the beginning and 319.7 MB in the end (delta: -527.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:28,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 356.5 MB. Free memory was 319.7 MB in the beginning and 317.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:28,590 INFO L168 Benchmark]: Boogie Preprocessor took 36.37 ms. Allocated memory is still 356.5 MB. Free memory was 317.6 MB in the beginning and 316.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 18:24:28,590 INFO L168 Benchmark]: RCFGBuilder took 428.40 ms. Allocated memory is still 356.5 MB. Free memory was 316.5 MB in the beginning and 290.3 MB in the end (delta: 26.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:28,591 INFO L168 Benchmark]: TraceAbstraction took 1462.57 ms. Allocated memory is still 356.5 MB. Free memory was 290.3 MB in the beginning and 255.5 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.0 GB. [2021-06-05 18:24:28,593 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 356.5 MB. Free memory is still 337.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 545.20 ms. Allocated memory is still 356.5 MB. Free memory was 319.1 MB in the beginning and 319.7 MB in the end (delta: -527.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 356.5 MB. Free memory was 319.7 MB in the beginning and 317.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 36.37 ms. Allocated memory is still 356.5 MB. Free memory was 317.6 MB in the beginning and 316.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 428.40 ms. Allocated memory is still 356.5 MB. Free memory was 316.5 MB in the beginning and 290.3 MB in the end (delta: 26.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1462.57 ms. Allocated memory is still 356.5 MB. Free memory was 290.3 MB in the beginning and 255.5 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 710]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 702]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: de_allocatorThread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 842.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 34.5ms, AutomataDifference: 189.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 66.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 325 SDtfs, 167 SDslu, 179 SDs, 0 SdLazy, 22 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 97.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.6ms SsaConstructionTime, 93.7ms SatisfiabilityAnalysisTime, 209.3ms InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: allocator with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 7.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: de_allocator with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 107.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 42.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 64.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 5.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: allocatorThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 336.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 4.8ms, AutomataDifference: 81.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 331 SDtfs, 75 SDslu, 277 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.5ms SsaConstructionTime, 33.4ms SatisfiabilityAnalysisTime, 111.0ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 349 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...