/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:58:07,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:58:07,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:58:07,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 14:58:07,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 14:58:07,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 14:58:07,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 14:58:07,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 14:58:07,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 14:58:07,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 14:58:07,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 14:58:07,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 14:58:07,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 14:58:07,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 14:58:07,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 14:58:07,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 14:58:07,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 14:58:07,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 14:58:07,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 14:58:07,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 14:58:07,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 14:58:07,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 14:58:07,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 14:58:07,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 14:58:07,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-07 14:58:07,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-07 14:58:07,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-07 14:58:07,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-07 14:58:07,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-07 14:58:07,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-07 14:58:07,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 14:58:07,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 14:58:07,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 14:58:07,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 14:58:07,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 14:58:07,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 14:58:07,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 14:58:07,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 14:58:07,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:58:07,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:58:07,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:58:07,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:58:07,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:58:07,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:58:07,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:58:07,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:58:07,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:58:07,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:58:07,569 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:58:07,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:58:07,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:58:07,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:58:07,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:58:07,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:58:07,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:58:07,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:58:07,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:58:07,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:58:07,572 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:58:07,572 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:58:07,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:58:07,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:58:07,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:58:07,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:58:07,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:58:07,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:58:07,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:07,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:58:07,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:58:07,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:58:07,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:58:07,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:58:07,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:58:07,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:58:07,576 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:58:07,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:58:07,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:58:07,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:58:07,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:58:07,977 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:58:07,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2021-10-07 14:58:08,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d85f4ebe8/691ed44266e64f5fbdb3db21b1247e68/FLAGbf3e16ef1 [2021-10-07 14:58:08,734 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:58:08,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2021-10-07 14:58:08,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d85f4ebe8/691ed44266e64f5fbdb3db21b1247e68/FLAGbf3e16ef1 [2021-10-07 14:58:09,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d85f4ebe8/691ed44266e64f5fbdb3db21b1247e68 [2021-10-07 14:58:09,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:58:09,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:58:09,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:09,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:58:09,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:58:09,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c355d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09, skipping insertion in model container [2021-10-07 14:58:09,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:58:09,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:58:09,487 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c[2129,2142] [2021-10-07 14:58:09,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:09,504 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:58:09,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c[2129,2142] [2021-10-07 14:58:09,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:09,582 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:58:09,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09 WrapperNode [2021-10-07 14:58:09,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:09,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:09,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:58:09,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:58:09,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:09,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:58:09,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:58:09,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:58:09,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:58:09,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:58:09,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:58:09,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:58:09,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (1/1) ... [2021-10-07 14:58:09,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:09,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:09,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 14:58:09,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 14:58:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:58:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:58:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:58:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:58:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:58:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:58:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:58:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 14:58:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 14:58:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:58:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:58:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:58:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:58:09,842 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:58:10,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:58:10,561 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 14:58:10,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:10 BoogieIcfgContainer [2021-10-07 14:58:10,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:58:10,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:58:10,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:58:10,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:58:10,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:58:09" (1/3) ... [2021-10-07 14:58:10,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ec8b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:10, skipping insertion in model container [2021-10-07 14:58:10,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:09" (2/3) ... [2021-10-07 14:58:10,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ec8b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:10, skipping insertion in model container [2021-10-07 14:58:10,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:10" (3/3) ... [2021-10-07 14:58:10,597 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2021-10-07 14:58:10,605 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:58:10,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:58:10,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 14:58:10,606 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:58:10,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,651 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,652 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:10,659 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 14:58:10,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:58:10,725 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 14:58:10,725 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-07 14:58:10,742 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:58:10,754 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions, 198 flow [2021-10-07 14:58:10,758 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 91 transitions, 198 flow [2021-10-07 14:58:10,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 198 flow [2021-10-07 14:58:10,829 INFO L129 PetriNetUnfolder]: 7/89 cut-off events. [2021-10-07 14:58:10,829 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 14:58:10,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 7/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2021-10-07 14:58:10,840 INFO L116 LiptonReduction]: Number of co-enabled transitions 612 [2021-10-07 14:58:14,698 INFO L131 LiptonReduction]: Checked pairs total: 1481 [2021-10-07 14:58:14,699 INFO L133 LiptonReduction]: Total number of compositions: 87 [2021-10-07 14:58:14,710 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 72 flow [2021-10-07 14:58:14,731 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 105 states have (on average 3.066666666666667) internal successors, (322), 130 states have internal predecessors, (322), 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) [2021-10-07 14:58:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 3.066666666666667) internal successors, (322), 130 states have internal predecessors, (322), 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) [2021-10-07 14:58:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:58:14,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:14,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:58:14,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash 391377, now seen corresponding path program 1 times [2021-10-07 14:58:14,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:14,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981326180] [2021-10-07 14:58:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:14,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:14,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:14,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981326180] [2021-10-07 14:58:14,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981326180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:14,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:14,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:14,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203986826] [2021-10-07 14:58:15,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:15,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:15,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,023 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 3.066666666666667) internal successors, (322), 130 states have internal predecessors, (322), 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, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-07 14:58:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:15,068 INFO L93 Difference]: Finished difference Result 87 states and 213 transitions. [2021-10-07 14:58:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-07 14:58:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:15,085 INFO L225 Difference]: With dead ends: 87 [2021-10-07 14:58:15,085 INFO L226 Difference]: Without dead ends: 87 [2021-10-07 14:58:15,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-07 14:58:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-07 14:58:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 74 states have (on average 2.8783783783783785) internal successors, (213), 86 states have internal predecessors, (213), 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) [2021-10-07 14:58:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 213 transitions. [2021-10-07 14:58:15,139 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 213 transitions. Word has length 3 [2021-10-07 14:58:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:15,140 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 213 transitions. [2021-10-07 14:58:15,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-07 14:58:15,141 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 213 transitions. [2021-10-07 14:58:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:58:15,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:15,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 14:58:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:58:15,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:15,143 INFO L82 PathProgramCache]: Analyzing trace with hash 12130237, now seen corresponding path program 1 times [2021-10-07 14:58:15,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:15,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088449032] [2021-10-07 14:58:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:15,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:15,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:15,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088449032] [2021-10-07 14:58:15,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088449032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:15,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:15,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:15,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642926506] [2021-10-07 14:58:15,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:15,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,205 INFO L87 Difference]: Start difference. First operand 87 states and 213 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-07 14:58:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:15,222 INFO L93 Difference]: Finished difference Result 144 states and 356 transitions. [2021-10-07 14:58:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:15,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-07 14:58:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:15,226 INFO L225 Difference]: With dead ends: 144 [2021-10-07 14:58:15,226 INFO L226 Difference]: Without dead ends: 144 [2021-10-07 14:58:15,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-07 14:58:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2021-10-07 14:58:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 102 states have (on average 3.0294117647058822) internal successors, (309), 114 states have internal predecessors, (309), 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) [2021-10-07 14:58:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 309 transitions. [2021-10-07 14:58:15,249 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 309 transitions. Word has length 4 [2021-10-07 14:58:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:15,249 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 309 transitions. [2021-10-07 14:58:15,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-07 14:58:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 309 transitions. [2021-10-07 14:58:15,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:58:15,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:15,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:58:15,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-07 14:58:15,255 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:15,255 INFO L82 PathProgramCache]: Analyzing trace with hash 376131813, now seen corresponding path program 1 times [2021-10-07 14:58:15,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:15,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946046610] [2021-10-07 14:58:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:15,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:15,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:15,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946046610] [2021-10-07 14:58:15,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946046610] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:15,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:15,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:15,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457693699] [2021-10-07 14:58:15,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:15,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,384 INFO L87 Difference]: Start difference. First operand 115 states and 309 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 14:58:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:15,435 INFO L93 Difference]: Finished difference Result 123 states and 286 transitions. [2021-10-07 14:58:15,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:15,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-07 14:58:15,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:15,442 INFO L225 Difference]: With dead ends: 123 [2021-10-07 14:58:15,443 INFO L226 Difference]: Without dead ends: 123 [2021-10-07 14:58:15,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-07 14:58:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2021-10-07 14:58:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 100 states have (on average 2.74) internal successors, (274), 112 states have internal predecessors, (274), 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) [2021-10-07 14:58:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 274 transitions. [2021-10-07 14:58:15,471 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 274 transitions. Word has length 5 [2021-10-07 14:58:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:15,471 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 274 transitions. [2021-10-07 14:58:15,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 14:58:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 274 transitions. [2021-10-07 14:58:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:58:15,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:15,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:58:15,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 14:58:15,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash 376131865, now seen corresponding path program 1 times [2021-10-07 14:58:15,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:15,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076782354] [2021-10-07 14:58:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:15,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:15,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:15,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076782354] [2021-10-07 14:58:15,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076782354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:15,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:15,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:15,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13779215] [2021-10-07 14:58:15,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:15,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:15,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:15,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,522 INFO L87 Difference]: Start difference. First operand 113 states and 274 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 14:58:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:15,540 INFO L93 Difference]: Finished difference Result 97 states and 233 transitions. [2021-10-07 14:58:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-07 14:58:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:15,544 INFO L225 Difference]: With dead ends: 97 [2021-10-07 14:58:15,544 INFO L226 Difference]: Without dead ends: 97 [2021-10-07 14:58:15,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-07 14:58:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-07 14:58:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 87 states have (on average 2.67816091954023) internal successors, (233), 96 states have internal predecessors, (233), 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) [2021-10-07 14:58:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 233 transitions. [2021-10-07 14:58:15,561 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 233 transitions. Word has length 5 [2021-10-07 14:58:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:15,563 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 233 transitions. [2021-10-07 14:58:15,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 14:58:15,564 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 233 transitions. [2021-10-07 14:58:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:58:15,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:15,565 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:58:15,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-07 14:58:15,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:15,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:15,569 INFO L82 PathProgramCache]: Analyzing trace with hash 376131812, now seen corresponding path program 1 times [2021-10-07 14:58:15,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:15,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785289061] [2021-10-07 14:58:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:15,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:58:15,602 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-07 14:58:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:58:15,681 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-07 14:58:15,681 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-07 14:58:15,683 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:58:15,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:58:15,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:15,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 14:58:15,699 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:58:15,699 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:58:15,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:58:15 BasicIcfg [2021-10-07 14:58:15,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:58:15,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:58:15,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:58:15,722 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:58:15,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:10" (3/4) ... [2021-10-07 14:58:15,725 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-07 14:58:15,772 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-bad-threaded-sum-2.wvr.c-witness.graphml [2021-10-07 14:58:15,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:58:15,775 INFO L168 Benchmark]: Toolchain (without parser) took 6642.85 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 140.4 MB in the beginning and 141.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:15,776 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 165.7 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:58:15,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.40 ms. Allocated memory is still 165.7 MB. Free memory was 140.0 MB in the beginning and 130.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:15,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.00 ms. Allocated memory is still 165.7 MB. Free memory was 129.8 MB in the beginning and 128.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:15,778 INFO L168 Benchmark]: Boogie Preprocessor took 52.74 ms. Allocated memory is still 165.7 MB. Free memory was 128.2 MB in the beginning and 127.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:15,779 INFO L168 Benchmark]: RCFGBuilder took 853.36 ms. Allocated memory is still 165.7 MB. Free memory was 127.0 MB in the beginning and 146.4 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:15,780 INFO L168 Benchmark]: TraceAbstraction took 5142.09 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 145.9 MB in the beginning and 143.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:15,780 INFO L168 Benchmark]: Witness Printer took 50.48 ms. Allocated memory is still 199.2 MB. Free memory was 143.7 MB in the beginning and 141.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:15,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 165.7 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.40 ms. Allocated memory is still 165.7 MB. Free memory was 140.0 MB in the beginning and 130.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 71.00 ms. Allocated memory is still 165.7 MB. Free memory was 129.8 MB in the beginning and 128.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.74 ms. Allocated memory is still 165.7 MB. Free memory was 128.2 MB in the beginning and 127.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 853.36 ms. Allocated memory is still 165.7 MB. Free memory was 127.0 MB in the beginning and 146.4 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5142.09 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 145.9 MB in the beginning and 143.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. * Witness Printer took 50.48 ms. Allocated memory is still 199.2 MB. Free memory was 143.7 MB in the beginning and 141.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3940.8ms, 91 PlacesBefore, 32 PlacesAfterwards, 91 TransitionsBefore, 28 TransitionsAfterwards, 612 CoEnabledTransitionPairs, 6 FixpointIterations, 50 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 87 TotalNumberOfCompositions, 1481 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1146, positive: 1092, positive conditional: 0, positive unconditional: 1092, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 411, positive: 401, positive conditional: 0, positive unconditional: 401, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 411, positive: 393, positive conditional: 0, positive unconditional: 393, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 61, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1146, positive: 691, positive conditional: 0, positive unconditional: 691, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 411, unknown conditional: 0, unknown unconditional: 411] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 56]: integer overflow possible integer overflow possible We found a FailurePath: [L38] 0 int s, t, m, T, S; [L67] 0 pthread_t t1, t2; [L69] 0 s = __VERIFIER_nondet_int() [L70] 0 t = __VERIFIER_nondet_int() [L71] 0 S = s [L72] 0 T = t [L35] COND FALSE 0 !(!cond) [L77] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [m=0, S=2147483647, s=2147483647, t=1, T=1] [L78] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [m=0, S=2147483647, s=2147483647, T=1, t=1] [L54] COND TRUE 2 t > 0 [L56] 2 s++ VAL [m=0, S=2147483647, s=2147483647, s++=2147483647, t=1, T=1] - UnprovableResult [Line: 44]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 4980.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 11.8ms, AutomataDifference: 192.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4005.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 54 SDslu, 27 SDs, 0 SdLazy, 40 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred 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: 98.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 39 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.6ms SsaConstructionTime, 133.4ms SatisfiabilityAnalysisTime, 203.9ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 39 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-07 14:58:15,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...