/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:20:51,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:20:51,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:20:51,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:20:51,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:20:51,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:20:51,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:20:51,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:20:51,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:20:51,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:20:51,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:20:51,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:20:51,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:20:51,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:20:51,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:20:51,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:20:51,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:20:51,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:20:51,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:20:51,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:20:51,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:20:51,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:20:51,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:20:51,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:20:51,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:20:51,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:20:51,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:20:51,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:20:51,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:20:51,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:20:51,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:20:51,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:20:51,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:20:51,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:20:51,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:20:51,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:20:51,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2021-01-20 21:20:51,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:20:51,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:20:51,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:20:51,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:20:51,743 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:20:51,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:20:51,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:20:51,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:20:51,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:20:51,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:20:51,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:20:51,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:20:51,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:20:51,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:20:51,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:20:51,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:20:51,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:20:51,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:20:51,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:20:51,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:20:51,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:20:51,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:20:51,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:20:51,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:20:51,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:20:51,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:20:51,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:20:51,752 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:20:51,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:20:51,753 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:20:51,753 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:20:51,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:20:52,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:20:52,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:20:52,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:20:52,244 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:20:52,245 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:20:52,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-01-20 21:20:52,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8d8e0bb/eaf2c4cf6844433fa832d99b649a113c/FLAG6778439e7 [2021-01-20 21:20:53,113 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:20:53,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-01-20 21:20:53,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8d8e0bb/eaf2c4cf6844433fa832d99b649a113c/FLAG6778439e7 [2021-01-20 21:20:53,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8d8e0bb/eaf2c4cf6844433fa832d99b649a113c [2021-01-20 21:20:53,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:20:53,331 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:20:53,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:20:53,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:20:53,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:20:53,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:20:53" (1/1) ... [2021-01-20 21:20:53,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ea818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:53, skipping insertion in model container [2021-01-20 21:20:53,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:20:53" (1/1) ... [2021-01-20 21:20:53,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:20:53,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:20:53,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:20:53,859 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:20:53,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:20:54,011 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:20:54,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54 WrapperNode [2021-01-20 21:20:54,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:20:54,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:20:54,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:20:54,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:20:54,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:20:54,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:20:54,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:20:54,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:20:54,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... [2021-01-20 21:20:54,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:20:54,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:20:54,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:20:54,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:20:54,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:20:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:20:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:20:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:20:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:20:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:20:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:20:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:20:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:20:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:20:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:20:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:20:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:20:54,245 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 21:20:54,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:20:54,605 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:20:54,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:20:54 BoogieIcfgContainer [2021-01-20 21:20:54,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:20:54,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:20:54,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:20:54,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:20:54,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:20:53" (1/3) ... [2021-01-20 21:20:54,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1487ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:20:54, skipping insertion in model container [2021-01-20 21:20:54,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:54" (2/3) ... [2021-01-20 21:20:54,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1487ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:20:54, skipping insertion in model container [2021-01-20 21:20:54,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:20:54" (3/3) ... [2021-01-20 21:20:54,618 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2021-01-20 21:20:54,636 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:20:54,636 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:20:54,640 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:20:54,642 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:20:54,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,678 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,678 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,687 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:54,696 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:20:54,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-20 21:20:54,738 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:20:54,738 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:20:54,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:20:54,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:20:54,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:20:54,739 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:20:54,739 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:20:54,739 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:20:54,752 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 65 transitions, 140 flow [2021-01-20 21:20:54,836 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 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) [2021-01-20 21:20:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 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) [2021-01-20 21:20:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-20 21:20:54,865 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:54,866 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:20:54,866 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:54,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1210534896, now seen corresponding path program 1 times [2021-01-20 21:20:54,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:54,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681318351] [2021-01-20 21:20:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:20:55,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681318351] [2021-01-20 21:20:55,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:55,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:20:55,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79156960] [2021-01-20 21:20:55,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:20:55,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:55,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:20:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:20:55,376 INFO L87 Difference]: Start difference. First operand has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 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 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-01-20 21:20:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:55,603 INFO L93 Difference]: Finished difference Result 1587 states and 4135 transitions. [2021-01-20 21:20:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:20:55,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 37 [2021-01-20 21:20:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:55,608 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:20:55,609 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 4135 transitions. Word has length 37 [2021-01-20 21:20:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:55,611 INFO L481 AbstractCegarLoop]: Abstraction has 1587 states and 4135 transitions. [2021-01-20 21:20:55,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-01-20 21:20:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 4135 transitions. [2021-01-20 21:20:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-20 21:20:55,619 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:55,619 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:20:55,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:20:55,620 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1963823439, now seen corresponding path program 1 times [2021-01-20 21:20:55,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:55,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167896231] [2021-01-20 21:20:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:20:55,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167896231] [2021-01-20 21:20:55,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:55,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:20:55,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744860559] [2021-01-20 21:20:55,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:20:55,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:55,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:20:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:20:55,863 INFO L87 Difference]: Start difference. First operand 1587 states and 4135 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-01-20 21:20:56,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:56,209 INFO L93 Difference]: Finished difference Result 2167 states and 5559 transitions. [2021-01-20 21:20:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:20:56,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-01-20 21:20:56,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:56,211 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:20:56,212 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 5559 transitions. Word has length 39 [2021-01-20 21:20:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:56,212 INFO L481 AbstractCegarLoop]: Abstraction has 2167 states and 5559 transitions. [2021-01-20 21:20:56,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-01-20 21:20:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 5559 transitions. [2021-01-20 21:20:56,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 21:20:56,218 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:56,218 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:20:56,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:20:56,218 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1149488442, now seen corresponding path program 1 times [2021-01-20 21:20:56,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:56,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338731047] [2021-01-20 21:20:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:20:56,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338731047] [2021-01-20 21:20:56,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:56,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:20:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276361822] [2021-01-20 21:20:56,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:20:56,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:56,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:20:56,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:20:56,371 INFO L87 Difference]: Start difference. First operand 2167 states and 5559 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-01-20 21:20:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:56,529 INFO L93 Difference]: Finished difference Result 1700 states and 4188 transitions. [2021-01-20 21:20:56,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:20:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2021-01-20 21:20:56,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:56,531 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:20:56,531 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 4188 transitions. Word has length 42 [2021-01-20 21:20:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:56,531 INFO L481 AbstractCegarLoop]: Abstraction has 1700 states and 4188 transitions. [2021-01-20 21:20:56,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-01-20 21:20:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 4188 transitions. [2021-01-20 21:20:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 21:20:56,536 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:56,537 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:20:56,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:20:56,537 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:56,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1597818113, now seen corresponding path program 1 times [2021-01-20 21:20:56,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:56,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341617720] [2021-01-20 21:20:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:20:56,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341617720] [2021-01-20 21:20:56,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:56,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:20:56,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157131508] [2021-01-20 21:20:56,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:20:56,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:56,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:20:56,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:20:56,752 INFO L87 Difference]: Start difference. First operand 1700 states and 4188 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:20:56,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:56,975 INFO L93 Difference]: Finished difference Result 1145 states and 2711 transitions. [2021-01-20 21:20:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:20:56,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 21:20:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:56,977 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:20:56,977 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 2711 transitions. Word has length 43 [2021-01-20 21:20:56,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:56,978 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 2711 transitions. [2021-01-20 21:20:56,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:20:56,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 2711 transitions. [2021-01-20 21:20:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:20:56,982 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:56,982 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:20:56,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:20:56,983 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 878840992, now seen corresponding path program 1 times [2021-01-20 21:20:56,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:56,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90355568] [2021-01-20 21:20:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:20:57,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90355568] [2021-01-20 21:20:57,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:57,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:20:57,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47467559] [2021-01-20 21:20:57,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:20:57,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:57,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:20:57,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:20:57,112 INFO L87 Difference]: Start difference. First operand 1145 states and 2711 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-01-20 21:20:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:57,216 INFO L93 Difference]: Finished difference Result 1501 states and 3540 transitions. [2021-01-20 21:20:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:20:57,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-01-20 21:20:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:57,218 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:20:57,218 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 3540 transitions. Word has length 45 [2021-01-20 21:20:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:57,218 INFO L481 AbstractCegarLoop]: Abstraction has 1501 states and 3540 transitions. [2021-01-20 21:20:57,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-01-20 21:20:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 3540 transitions. [2021-01-20 21:20:57,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:20:57,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:20:57,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:20:57 BasicIcfg [2021-01-20 21:20:57,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:20:57,231 INFO L168 Benchmark]: Toolchain (without parser) took 3899.15 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 277.2 MB in the beginning and 263.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:57,232 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 272.1 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:20:57,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.68 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.7 MB in the end (delta: 30.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:57,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.53 ms. Allocated memory is still 302.0 MB. Free memory was 246.7 MB in the beginning and 284.6 MB in the end (delta: -37.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:57,234 INFO L168 Benchmark]: Boogie Preprocessor took 62.25 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:57,235 INFO L168 Benchmark]: RCFGBuilder took 457.67 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 261.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:57,236 INFO L168 Benchmark]: TraceAbstraction took 2618.82 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 260.5 MB in the beginning and 263.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:57,240 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 302.0 MB. Free memory was 272.2 MB in the beginning and 272.1 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 679.68 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.7 MB in the end (delta: 30.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 69.53 ms. Allocated memory is still 302.0 MB. Free memory was 246.7 MB in the beginning and 284.6 MB in the end (delta: -37.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 62.25 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 457.67 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 261.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2618.82 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 260.5 MB in the beginning and 263.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 423 SDtfs, 715 SDslu, 1439 SDs, 0 SdLazy, 177 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2167occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 21553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...