/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 13:34:42,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 13:34:42,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 13:34:42,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 13:34:42,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 13:34:42,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 13:34:42,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 13:34:42,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 13:34:42,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 13:34:42,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 13:34:42,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 13:34:42,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 13:34:42,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 13:34:42,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 13:34:42,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 13:34:42,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 13:34:42,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 13:34:42,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 13:34:42,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 13:34:42,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 13:34:42,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 13:34:42,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 13:34:42,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 13:34:42,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 13:34:42,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 13:34:42,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 13:34:42,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 13:34:42,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 13:34:42,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 13:34:42,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 13:34:42,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 13:34:42,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 13:34:42,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 13:34:42,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 13:34:42,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 13:34:42,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 13:34:42,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-11-09 13:34:42,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 13:34:42,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 13:34:42,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 13:34:42,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 13:34:42,689 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 13:34:42,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 13:34:42,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 13:34:42,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 13:34:42,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 13:34:42,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 13:34:42,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 13:34:42,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 13:34:42,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 13:34:42,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 13:34:42,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 13:34:42,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 13:34:42,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 13:34:42,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 13:34:42,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 13:34:42,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 13:34:42,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 13:34:42,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 13:34:42,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 13:34:42,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 13:34:42,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 13:34:42,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 13:34:42,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 13:34:42,694 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 13:34:42,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 13:34:43,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 13:34:43,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 13:34:43,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 13:34:43,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 13:34:43,133 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 13:34:43,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-11-09 13:34:43,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1037346/ae7b7a7a8e0d459da8cd4b70733acd2b/FLAG6c5269fdf [2020-11-09 13:34:44,052 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 13:34:44,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-11-09 13:34:44,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1037346/ae7b7a7a8e0d459da8cd4b70733acd2b/FLAG6c5269fdf [2020-11-09 13:34:44,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1037346/ae7b7a7a8e0d459da8cd4b70733acd2b [2020-11-09 13:34:44,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 13:34:44,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 13:34:44,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 13:34:44,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 13:34:44,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 13:34:44,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:44,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e58be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44, skipping insertion in model container [2020-11-09 13:34:44,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:44,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 13:34:44,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 13:34:44,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:34:44,767 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 13:34:44,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:34:44,936 INFO L208 MainTranslator]: Completed translation [2020-11-09 13:34:44,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44 WrapperNode [2020-11-09 13:34:44,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 13:34:44,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 13:34:44,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 13:34:44,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 13:34:44,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:44,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:44,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 13:34:44,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 13:34:44,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 13:34:44,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 13:34:45,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:45,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:45,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:45,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:45,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:45,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:45,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (1/1) ... [2020-11-09 13:34:45,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 13:34:45,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 13:34:45,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 13:34:45,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 13:34:45,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (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 [2020-11-09 13:34:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-09 13:34:45,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-09 13:34:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 13:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 13:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 13:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 13:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 13:34:45,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 13:34:45,105 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 13:34:45,712 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 13:34:45,713 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-09 13:34:45,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:34:45 BoogieIcfgContainer [2020-11-09 13:34:45,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 13:34:45,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 13:34:45,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 13:34:45,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 13:34:45,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:34:44" (1/3) ... [2020-11-09 13:34:45,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5a2770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:34:45, skipping insertion in model container [2020-11-09 13:34:45,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:34:44" (2/3) ... [2020-11-09 13:34:45,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5a2770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:34:45, skipping insertion in model container [2020-11-09 13:34:45,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:34:45" (3/3) ... [2020-11-09 13:34:45,730 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-11-09 13:34:45,748 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 13:34:45,749 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 13:34:45,755 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-09 13:34:45,756 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 13:34:45,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,802 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,802 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,804 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,804 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,806 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:34:45,824 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 13:34:45,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 13:34:45,875 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 13:34:45,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 13:34:45,876 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 13:34:45,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 13:34:45,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 13:34:45,876 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 13:34:45,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 13:34:45,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 13:34:45,889 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 13:34:45,890 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-09 13:34:45,893 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-09 13:34:45,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 96 transitions, 197 flow [2020-11-09 13:34:45,938 INFO L129 PetriNetUnfolder]: 26/95 cut-off events. [2020-11-09 13:34:45,939 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 13:34:45,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 26/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2020-11-09 13:34:45,951 INFO L116 LiptonReduction]: Number of co-enabled transitions 3150 [2020-11-09 13:34:47,515 WARN L194 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-09 13:34:47,826 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-09 13:34:47,951 INFO L131 LiptonReduction]: Checked pairs total: 5998 [2020-11-09 13:34:47,952 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-09 13:34:47,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-11-09 13:34:47,991 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-11-09 13:34:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-11-09 13:34:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 13:34:48,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:34:48,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:34:48,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:34:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:34:48,014 INFO L82 PathProgramCache]: Analyzing trace with hash 556857473, now seen corresponding path program 1 times [2020-11-09 13:34:48,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:34:48,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458835882] [2020-11-09 13:34:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:34:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:34:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:34:48,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458835882] [2020-11-09 13:34:48,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:34:48,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 13:34:48,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972621575] [2020-11-09 13:34:48,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 13:34:48,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:34:48,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 13:34:48,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 13:34:48,226 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-11-09 13:34:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:34:48,269 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-11-09 13:34:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 13:34:48,271 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-09 13:34:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:34:48,295 INFO L225 Difference]: With dead ends: 198 [2020-11-09 13:34:48,295 INFO L226 Difference]: Without dead ends: 198 [2020-11-09 13:34:48,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 13:34:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-09 13:34:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-09 13:34:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-09 13:34:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-11-09 13:34:48,381 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-11-09 13:34:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:34:48,382 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-11-09 13:34:48,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 13:34:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-11-09 13:34:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:34:48,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:34:48,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:34:48,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 13:34:48,385 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:34:48,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:34:48,385 INFO L82 PathProgramCache]: Analyzing trace with hash -265870444, now seen corresponding path program 1 times [2020-11-09 13:34:48,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:34:48,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124206953] [2020-11-09 13:34:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:34:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:34:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:34:48,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124206953] [2020-11-09 13:34:48,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:34:48,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 13:34:48,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244408508] [2020-11-09 13:34:48,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 13:34:48,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:34:48,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 13:34:48,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,473 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-11-09 13:34:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:34:48,522 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-11-09 13:34:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 13:34:48,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 13:34:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:34:48,527 INFO L225 Difference]: With dead ends: 362 [2020-11-09 13:34:48,527 INFO L226 Difference]: Without dead ends: 362 [2020-11-09 13:34:48,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-11-09 13:34:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-11-09 13:34:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-09 13:34:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-11-09 13:34:48,551 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-11-09 13:34:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:34:48,552 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-11-09 13:34:48,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 13:34:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-11-09 13:34:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:34:48,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:34:48,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:34:48,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 13:34:48,554 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:34:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:34:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1897023782, now seen corresponding path program 1 times [2020-11-09 13:34:48,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:34:48,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398388517] [2020-11-09 13:34:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:34:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:34:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:34:48,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398388517] [2020-11-09 13:34:48,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:34:48,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 13:34:48,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475683963] [2020-11-09 13:34:48,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 13:34:48,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:34:48,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 13:34:48,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,625 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-11-09 13:34:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:34:48,656 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-11-09 13:34:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 13:34:48,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 13:34:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:34:48,660 INFO L225 Difference]: With dead ends: 348 [2020-11-09 13:34:48,660 INFO L226 Difference]: Without dead ends: 348 [2020-11-09 13:34:48,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-09 13:34:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-11-09 13:34:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 13:34:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-11-09 13:34:48,698 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-11-09 13:34:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:34:48,698 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-11-09 13:34:48,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 13:34:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-11-09 13:34:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 13:34:48,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:34:48,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:34:48,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 13:34:48,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:34:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:34:48,702 INFO L82 PathProgramCache]: Analyzing trace with hash -293575379, now seen corresponding path program 1 times [2020-11-09 13:34:48,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:34:48,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892496290] [2020-11-09 13:34:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:34:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:34:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:34:48,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892496290] [2020-11-09 13:34:48,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:34:48,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:34:48,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094145410] [2020-11-09 13:34:48,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 13:34:48,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:34:48,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 13:34:48,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,746 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-11-09 13:34:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:34:48,789 INFO L93 Difference]: Finished difference Result 234 states and 577 transitions. [2020-11-09 13:34:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 13:34:48,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-09 13:34:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:34:48,792 INFO L225 Difference]: With dead ends: 234 [2020-11-09 13:34:48,792 INFO L226 Difference]: Without dead ends: 234 [2020-11-09 13:34:48,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-09 13:34:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2020-11-09 13:34:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-09 13:34:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 569 transitions. [2020-11-09 13:34:48,803 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 569 transitions. Word has length 19 [2020-11-09 13:34:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:34:48,804 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 569 transitions. [2020-11-09 13:34:48,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 13:34:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 569 transitions. [2020-11-09 13:34:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 13:34:48,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:34:48,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:34:48,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 13:34:48,806 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:34:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:34:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash -369860675, now seen corresponding path program 2 times [2020-11-09 13:34:48,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:34:48,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144472496] [2020-11-09 13:34:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:34:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:34:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:34:48,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144472496] [2020-11-09 13:34:48,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:34:48,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:34:48,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848352370] [2020-11-09 13:34:48,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 13:34:48,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:34:48,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 13:34:48,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,866 INFO L87 Difference]: Start difference. First operand 230 states and 569 transitions. Second operand 3 states. [2020-11-09 13:34:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:34:48,907 INFO L93 Difference]: Finished difference Result 228 states and 553 transitions. [2020-11-09 13:34:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 13:34:48,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-09 13:34:48,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:34:48,910 INFO L225 Difference]: With dead ends: 228 [2020-11-09 13:34:48,910 INFO L226 Difference]: Without dead ends: 228 [2020-11-09 13:34:48,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-09 13:34:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-11-09 13:34:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-11-09 13:34:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 553 transitions. [2020-11-09 13:34:48,920 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 553 transitions. Word has length 19 [2020-11-09 13:34:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:34:48,920 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 553 transitions. [2020-11-09 13:34:48,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 13:34:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 553 transitions. [2020-11-09 13:34:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 13:34:48,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:34:48,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:34:48,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 13:34:48,922 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:34:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:34:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash -520856579, now seen corresponding path program 3 times [2020-11-09 13:34:48,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:34:48,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470377776] [2020-11-09 13:34:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:34:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:34:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:34:48,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470377776] [2020-11-09 13:34:48,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:34:48,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:34:48,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279224667] [2020-11-09 13:34:48,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 13:34:48,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:34:48,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 13:34:48,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:48,962 INFO L87 Difference]: Start difference. First operand 228 states and 553 transitions. Second operand 3 states. [2020-11-09 13:34:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:34:49,006 INFO L93 Difference]: Finished difference Result 194 states and 463 transitions. [2020-11-09 13:34:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 13:34:49,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-09 13:34:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:34:49,007 INFO L225 Difference]: With dead ends: 194 [2020-11-09 13:34:49,007 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 13:34:49,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 13:34:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 13:34:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 13:34:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 13:34:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 13:34:49,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-09 13:34:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:34:49,009 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 13:34:49,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 13:34:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 13:34:49,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 13:34:49,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 13:34:49,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 01:34:49 BasicIcfg [2020-11-09 13:34:49,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 13:34:49,015 INFO L168 Benchmark]: Toolchain (without parser) took 4762.62 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.3 MB in the beginning and 69.5 MB in the end (delta: 55.9 MB). Peak memory consumption was 87.3 MB. Max. memory is 8.0 GB. [2020-11-09 13:34:49,016 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 13:34:49,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 129.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2020-11-09 13:34:49,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.94 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 127.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:34:49,018 INFO L168 Benchmark]: Boogie Preprocessor took 33.76 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 13:34:49,019 INFO L168 Benchmark]: RCFGBuilder took 691.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:34:49,020 INFO L168 Benchmark]: TraceAbstraction took 3291.09 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.8 MB in the beginning and 69.5 MB in the end (delta: 33.4 MB). Peak memory consumption was 63.8 MB. Max. memory is 8.0 GB. [2020-11-09 13:34:49,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 678.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 129.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.94 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 127.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.76 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 691.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3291.09 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.8 MB in the beginning and 69.5 MB in the end (delta: 33.4 MB). Peak memory consumption was 63.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1354 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 74 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 51 TransitionsAfterwards, 3150 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5998 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 314 SDtfs, 133 SDslu, 117 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 275 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...