/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 10:04:38,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:04:38,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:04:38,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 10:04:38,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 10:04:38,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 10:04:38,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 10:04:38,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 10:04:38,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 10:04:38,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 10:04:38,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 10:04:38,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 10:04:38,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:04:38,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:04:38,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:04:38,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:04:38,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:04:38,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:04:38,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:04:38,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:04:38,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:04:38,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:04:38,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:04:38,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:04:38,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 10:04:38,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 10:04:38,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 10:04:38,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 10:04:38,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 10:04:38,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 10:04:38,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 10:04:38,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 10:04:38,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 10:04:38,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:04:38,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:04:38,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:04:38,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 10:04:38,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:04:38,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:04:38,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:04:38,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:04:38,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:04:38,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:04:38,907 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:04:38,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:04:38,907 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:04:38,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:04:38,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:04:38,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:04:38,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:04:38,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:04:38,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:04:38,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:04:38,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:04:38,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:04:38,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:04:38,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:04:38,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:04:38,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:04:38,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:04:38,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:04:38,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:04:38,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:04:38,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:04:38,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:04:38,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:04:38,911 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:04:38,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:04:38,911 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:04:38,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:04:39,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:04:39,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:04:39,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:04:39,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:04:39,261 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:04:39,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-06-05 10:04:39,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162a23ec7/8e6c95877e7943c9ab962b8efe39717b/FLAG07435780b [2021-06-05 10:04:39,887 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:04:39,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-06-05 10:04:39,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162a23ec7/8e6c95877e7943c9ab962b8efe39717b/FLAG07435780b [2021-06-05 10:04:40,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162a23ec7/8e6c95877e7943c9ab962b8efe39717b [2021-06-05 10:04:40,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:04:40,200 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:04:40,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:04:40,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:04:40,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:04:40,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64027f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40, skipping insertion in model container [2021-06-05 10:04:40,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:04:40,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:04:40,440 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i[950,963] [2021-06-05 10:04:40,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:04:40,649 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:04:40,660 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i[950,963] [2021-06-05 10:04:40,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:04:40,762 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:04:40,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40 WrapperNode [2021-06-05 10:04:40,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:04:40,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:04:40,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:04:40,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:04:40,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:04:40,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:04:40,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:04:40,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:04:40,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... [2021-06-05 10:04:40,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:04:40,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:04:40,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:04:40,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:04:40,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:04:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:04:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 10:04:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:04:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:04:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 10:04:40,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 10:04:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 10:04:40,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 10:04:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 10:04:40,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 10:04:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:04:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 10:04:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:04:40,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:04:40,944 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 10:04:41,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:04:41,279 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:04:41,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:04:41 BoogieIcfgContainer [2021-06-05 10:04:41,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:04:41,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:04:41,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:04:41,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:04:41,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:04:40" (1/3) ... [2021-06-05 10:04:41,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f1bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:04:41, skipping insertion in model container [2021-06-05 10:04:41,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:40" (2/3) ... [2021-06-05 10:04:41,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f1bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:04:41, skipping insertion in model container [2021-06-05 10:04:41,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:04:41" (3/3) ... [2021-06-05 10:04:41,287 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2021-06-05 10:04:41,292 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:04:41,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:04:41,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:04:41,293 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:04:41,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,322 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,324 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,327 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,333 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,333 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:41,335 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 10:04:41,355 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 10:04:41,372 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:04:41,372 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:04:41,372 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:04:41,372 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:04:41,372 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:04:41,372 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:04:41,372 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:04:41,373 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:04:41,381 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-05 10:04:41,896 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:41,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 10:04:41,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:41,972 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:41,973 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:41,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1833038261, now seen corresponding path program 1 times [2021-06-05 10:04:41,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:41,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4027166] [2021-06-05 10:04:41,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:42,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:42,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4027166] [2021-06-05 10:04:42,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4027166] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:42,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:42,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:42,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031904413] [2021-06-05 10:04:42,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:42,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:42,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:42,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:42,475 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:42,947 INFO L93 Difference]: Finished difference Result 14357 states and 50008 transitions. [2021-06-05 10:04:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:04:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 10:04:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:42,996 INFO L225 Difference]: With dead ends: 14357 [2021-06-05 10:04:42,997 INFO L226 Difference]: Without dead ends: 3812 [2021-06-05 10:04:42,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 219.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:04:43,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-06-05 10:04:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3452. [2021-06-05 10:04:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3451 states have (on average 3.204578383077369) internal successors, (11059), 3451 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 11059 transitions. [2021-06-05 10:04:43,298 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 11059 transitions. Word has length 48 [2021-06-05 10:04:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:43,302 INFO L482 AbstractCegarLoop]: Abstraction has 3452 states and 11059 transitions. [2021-06-05 10:04:43,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 11059 transitions. [2021-06-05 10:04:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 10:04:43,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:43,316 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:43,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:04:43,317 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:43,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1414286899, now seen corresponding path program 1 times [2021-06-05 10:04:43,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:43,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554204666] [2021-06-05 10:04:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:43,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:43,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554204666] [2021-06-05 10:04:43,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554204666] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:43,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:43,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:04:43,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067675100] [2021-06-05 10:04:43,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:04:43,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:04:43,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:04:43,541 INFO L87 Difference]: Start difference. First operand 3452 states and 11059 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:43,680 INFO L93 Difference]: Finished difference Result 4082 states and 13023 transitions. [2021-06-05 10:04:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:04:43,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2021-06-05 10:04:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:43,698 INFO L225 Difference]: With dead ends: 4082 [2021-06-05 10:04:43,698 INFO L226 Difference]: Without dead ends: 3110 [2021-06-05 10:04:43,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:04:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-06-05 10:04:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3078. [2021-06-05 10:04:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 3.178420539486513) internal successors, (9780), 3077 states have internal predecessors, (9780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 9780 transitions. [2021-06-05 10:04:43,866 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 9780 transitions. Word has length 52 [2021-06-05 10:04:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:43,867 INFO L482 AbstractCegarLoop]: Abstraction has 3078 states and 9780 transitions. [2021-06-05 10:04:43,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 9780 transitions. [2021-06-05 10:04:43,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 10:04:43,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:43,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:43,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:04:43,877 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:43,878 INFO L82 PathProgramCache]: Analyzing trace with hash 490972131, now seen corresponding path program 1 times [2021-06-05 10:04:43,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:43,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877384555] [2021-06-05 10:04:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:44,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:44,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877384555] [2021-06-05 10:04:44,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877384555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:44,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:44,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:04:44,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786614533] [2021-06-05 10:04:44,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:04:44,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:44,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:04:44,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:04:44,043 INFO L87 Difference]: Start difference. First operand 3078 states and 9780 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:44,251 INFO L93 Difference]: Finished difference Result 4310 states and 13516 transitions. [2021-06-05 10:04:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 10:04:44,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 53 [2021-06-05 10:04:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:44,265 INFO L225 Difference]: With dead ends: 4310 [2021-06-05 10:04:44,266 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 10:04:44,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:04:44,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 10:04:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2278. [2021-06-05 10:04:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2277 states have (on average 3.0443566095740007) internal successors, (6932), 2277 states have internal predecessors, (6932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 6932 transitions. [2021-06-05 10:04:44,398 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 6932 transitions. Word has length 53 [2021-06-05 10:04:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:44,400 INFO L482 AbstractCegarLoop]: Abstraction has 2278 states and 6932 transitions. [2021-06-05 10:04:44,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 6932 transitions. [2021-06-05 10:04:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 10:04:44,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:44,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:44,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 10:04:44,406 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:44,407 INFO L82 PathProgramCache]: Analyzing trace with hash -945022826, now seen corresponding path program 1 times [2021-06-05 10:04:44,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:44,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626541557] [2021-06-05 10:04:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:44,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:44,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626541557] [2021-06-05 10:04:44,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626541557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:44,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:44,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:44,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123909552] [2021-06-05 10:04:44,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:44,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:44,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:44,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:44,539 INFO L87 Difference]: Start difference. First operand 2278 states and 6932 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:44,690 INFO L93 Difference]: Finished difference Result 2558 states and 7766 transitions. [2021-06-05 10:04:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:04:44,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-06-05 10:04:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:44,698 INFO L225 Difference]: With dead ends: 2558 [2021-06-05 10:04:44,698 INFO L226 Difference]: Without dead ends: 1333 [2021-06-05 10:04:44,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 10:04:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-06-05 10:04:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2021-06-05 10:04:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 3.0022522522522523) internal successors, (3999), 1332 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 3999 transitions. [2021-06-05 10:04:44,735 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 3999 transitions. Word has length 55 [2021-06-05 10:04:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:44,736 INFO L482 AbstractCegarLoop]: Abstraction has 1333 states and 3999 transitions. [2021-06-05 10:04:44,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 3999 transitions. [2021-06-05 10:04:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 10:04:44,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:44,742 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:44,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 10:04:44,745 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2078823676, now seen corresponding path program 1 times [2021-06-05 10:04:44,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:44,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354459307] [2021-06-05 10:04:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:44,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:44,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354459307] [2021-06-05 10:04:44,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354459307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:44,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:44,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:04:44,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019834171] [2021-06-05 10:04:44,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:04:44,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:44,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:04:44,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:04:44,884 INFO L87 Difference]: Start difference. First operand 1333 states and 3999 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:45,011 INFO L93 Difference]: Finished difference Result 1528 states and 4529 transitions. [2021-06-05 10:04:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:04:45,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-06-05 10:04:45,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:45,020 INFO L225 Difference]: With dead ends: 1528 [2021-06-05 10:04:45,020 INFO L226 Difference]: Without dead ends: 1168 [2021-06-05 10:04:45,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:04:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-06-05 10:04:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2021-06-05 10:04:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 2.9511568123393315) internal successors, (3444), 1167 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3444 transitions. [2021-06-05 10:04:45,049 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3444 transitions. Word has length 56 [2021-06-05 10:04:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:45,049 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3444 transitions. [2021-06-05 10:04:45,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3444 transitions. [2021-06-05 10:04:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 10:04:45,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:45,052 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:45,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 10:04:45,052 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:45,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1611481061, now seen corresponding path program 1 times [2021-06-05 10:04:45,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:45,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035239484] [2021-06-05 10:04:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:45,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:45,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035239484] [2021-06-05 10:04:45,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035239484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:45,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:45,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:45,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465289906] [2021-06-05 10:04:45,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:45,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:45,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:45,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:45,151 INFO L87 Difference]: Start difference. First operand 1168 states and 3444 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:45,263 INFO L93 Difference]: Finished difference Result 1060 states and 3024 transitions. [2021-06-05 10:04:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:04:45,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-06-05 10:04:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:45,268 INFO L225 Difference]: With dead ends: 1060 [2021-06-05 10:04:45,268 INFO L226 Difference]: Without dead ends: 808 [2021-06-05 10:04:45,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:04:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-06-05 10:04:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2021-06-05 10:04:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 2.799256505576208) internal successors, (2259), 807 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2259 transitions. [2021-06-05 10:04:45,287 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2259 transitions. Word has length 57 [2021-06-05 10:04:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:45,288 INFO L482 AbstractCegarLoop]: Abstraction has 808 states and 2259 transitions. [2021-06-05 10:04:45,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2259 transitions. [2021-06-05 10:04:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 10:04:45,290 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:45,290 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:45,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 10:04:45,290 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:45,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2015620850, now seen corresponding path program 1 times [2021-06-05 10:04:45,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:45,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50651871] [2021-06-05 10:04:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:45,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:45,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50651871] [2021-06-05 10:04:45,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50651871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:45,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:45,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:04:45,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596217387] [2021-06-05 10:04:45,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:04:45,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:45,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:04:45,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:04:45,374 INFO L87 Difference]: Start difference. First operand 808 states and 2259 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:45,451 INFO L93 Difference]: Finished difference Result 511 states and 1368 transitions. [2021-06-05 10:04:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 10:04:45,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 58 [2021-06-05 10:04:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:45,452 INFO L225 Difference]: With dead ends: 511 [2021-06-05 10:04:45,452 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 10:04:45,452 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:04:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 10:04:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 10:04:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 10:04:45,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-06-05 10:04:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:45,453 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 10:04:45,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 10:04:45,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 10:04:45,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 10:04:45,455 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:04:45,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:04:45 BasicIcfg [2021-06-05 10:04:45,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:04:45,458 INFO L168 Benchmark]: Toolchain (without parser) took 5257.78 ms. Allocated memory was 360.7 MB in the beginning and 901.8 MB in the end (delta: 541.1 MB). Free memory was 323.6 MB in the beginning and 688.3 MB in the end (delta: -364.7 MB). Peak memory consumption was 179.3 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:45,458 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 360.7 MB. Free memory was 341.7 MB in the beginning and 341.6 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:04:45,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.33 ms. Allocated memory is still 360.7 MB. Free memory was 323.4 MB in the beginning and 323.0 MB in the end (delta: 351.9 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:45,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.23 ms. Allocated memory is still 360.7 MB. Free memory was 323.0 MB in the beginning and 320.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:45,459 INFO L168 Benchmark]: Boogie Preprocessor took 37.45 ms. Allocated memory is still 360.7 MB. Free memory was 320.9 MB in the beginning and 320.2 MB in the end (delta: 704.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:04:45,460 INFO L168 Benchmark]: RCFGBuilder took 418.59 ms. Allocated memory is still 360.7 MB. Free memory was 319.5 MB in the beginning and 296.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:45,460 INFO L168 Benchmark]: TraceAbstraction took 4175.37 ms. Allocated memory was 360.7 MB in the beginning and 901.8 MB in the end (delta: 541.1 MB). Free memory was 295.7 MB in the beginning and 688.3 MB in the end (delta: -392.6 MB). Peak memory consumption was 150.9 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:45,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 360.7 MB. Free memory was 341.7 MB in the beginning and 341.6 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 559.33 ms. Allocated memory is still 360.7 MB. Free memory was 323.4 MB in the beginning and 323.0 MB in the end (delta: 351.9 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 59.23 ms. Allocated memory is still 360.7 MB. Free memory was 323.0 MB in the beginning and 320.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 37.45 ms. Allocated memory is still 360.7 MB. Free memory was 320.9 MB in the beginning and 320.2 MB in the end (delta: 704.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 418.59 ms. Allocated memory is still 360.7 MB. Free memory was 319.5 MB in the beginning and 296.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4175.37 ms. Allocated memory was 360.7 MB in the beginning and 901.8 MB in the end (delta: 541.1 MB). Free memory was 295.7 MB in the beginning and 688.3 MB in the end (delta: -392.6 MB). Peak memory consumption was 150.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4084.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 110.0ms, AutomataDifference: 1430.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 523.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 714 SDtfs, 1155 SDslu, 2353 SDs, 0 SdLazy, 262 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 244.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 922.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 672.2ms AutomataMinimizationTime, 7 MinimizatonAttempts, 584 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.9ms SsaConstructionTime, 188.4ms SatisfiabilityAnalysisTime, 910.8ms InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 1578 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...