/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:28:38,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:28:38,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:28:38,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:28:38,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:28:38,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:28:38,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:28:38,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:28:38,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:28:38,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:28:38,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:28:38,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:28:38,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:28:38,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:28:38,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:28:38,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:28:38,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:28:38,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:28:38,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:28:38,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:28:38,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:28:38,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:28:38,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:28:38,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:28:38,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:28:38,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:28:38,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:28:38,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:28:38,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:28:38,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:28:38,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:28:38,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:28:38,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:28:38,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:28:38,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:28:38,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:28:38,905 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-SemanticLbe.epf [2021-03-11 11:28:38,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:28:38,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:28:38,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:28:38,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:28:38,942 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:28:38,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:28:38,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:28:38,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:28:38,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:28:38,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:28:38,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:28:38,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:28:38,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:28:38,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:28:38,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:28:38,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:28:38,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:28:38,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:28:38,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:28:38,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:28:38,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:28:38,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:28:38,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:28:38,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:28:38,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:28:38,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:28:38,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:28:38,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:28:38,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:28:39,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:28:39,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:28:39,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:28:39,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:28:39,270 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:28:39,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2021-03-11 11:28:39,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb39c66e/6fae1cb28bc7499eb4588d9f29ba4459/FLAG9e5552e38 [2021-03-11 11:28:39,889 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:28:39,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2021-03-11 11:28:39,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb39c66e/6fae1cb28bc7499eb4588d9f29ba4459/FLAG9e5552e38 [2021-03-11 11:28:40,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceb39c66e/6fae1cb28bc7499eb4588d9f29ba4459 [2021-03-11 11:28:40,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:28:40,342 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:28:40,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:28:40,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:28:40,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:28:40,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4151d065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40, skipping insertion in model container [2021-03-11 11:28:40,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:28:40,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:28:40,488 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i[950,963] [2021-03-11 11:28:40,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:28:40,652 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:28:40,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i[950,963] [2021-03-11 11:28:40,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:28:40,783 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:28:40,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40 WrapperNode [2021-03-11 11:28:40,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:28:40,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:28:40,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:28:40,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:28:40,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:28:40,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:28:40,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:28:40,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:28:40,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (1/1) ... [2021-03-11 11:28:40,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:28:40,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:28:40,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:28:40,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:28:40,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (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 [2021-03-11 11:28:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:28:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:28:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:28:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:28:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:28:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:28:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:28:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:28:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:28:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:28:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:28:40,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:28:40,955 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:28:41,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:28:41,235 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:28:41,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:28:41 BoogieIcfgContainer [2021-03-11 11:28:41,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:28:41,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:28:41,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:28:41,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:28:41,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:28:40" (1/3) ... [2021-03-11 11:28:41,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13422d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:28:41, skipping insertion in model container [2021-03-11 11:28:41,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:28:40" (2/3) ... [2021-03-11 11:28:41,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13422d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:28:41, skipping insertion in model container [2021-03-11 11:28:41,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:28:41" (3/3) ... [2021-03-11 11:28:41,244 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2021-03-11 11:28:41,247 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:28:41,247 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:28:41,250 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:28:41,250 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:28:41,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,274 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,274 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,274 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,275 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:28:41,284 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:28:41,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 11:28:41,313 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:28:41,313 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:28:41,313 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:28:41,314 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:28:41,314 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:28:41,314 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:28:41,314 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:28:41,314 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:28:41,325 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:28:41,343 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2021-03-11 11:28:41,353 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2021-03-11 11:28:41,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 11:28:41,386 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-11 11:28:41,387 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:28:41,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 11:28:41,390 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-03-11 11:28:43,383 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 11:28:43,598 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 11:28:43,660 INFO L131 LiptonReduction]: Checked pairs total: 1276 [2021-03-11 11:28:43,661 INFO L133 LiptonReduction]: Total number of compositions: 56 [2021-03-11 11:28:43,666 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2021-03-11 11:28:43,676 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 90 states, 88 states have (on average 2.4545454545454546) internal successors, (216), 89 states have internal predecessors, (216), 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) [2021-03-11 11:28:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 88 states have (on average 2.4545454545454546) internal successors, (216), 89 states have internal predecessors, (216), 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) [2021-03-11 11:28:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 11:28:43,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:28:43,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 11:28:43,681 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:28:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:28:43,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1837243684, now seen corresponding path program 1 times [2021-03-11 11:28:43,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:28:43,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108730326] [2021-03-11 11:28:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:28:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:28:43,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:43,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:28:43,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:43,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:28:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:28:43,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108730326] [2021-03-11 11:28:43,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:28:43,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:28:43,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228878216] [2021-03-11 11:28:43,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:28:43,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:28:43,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:28:43,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:28:43,876 INFO L87 Difference]: Start difference. First operand has 90 states, 88 states have (on average 2.4545454545454546) internal successors, (216), 89 states have internal predecessors, (216), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-03-11 11:28:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:28:43,912 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2021-03-11 11:28:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:28:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-03-11 11:28:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:28:43,922 INFO L225 Difference]: With dead ends: 90 [2021-03-11 11:28:43,922 INFO L226 Difference]: Without dead ends: 74 [2021-03-11 11:28:43,923 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:28:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-03-11 11:28:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-03-11 11:28:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.191780821917808) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-03-11 11:28:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2021-03-11 11:28:43,964 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2021-03-11 11:28:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:28:43,965 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2021-03-11 11:28:43,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-03-11 11:28:43,966 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2021-03-11 11:28:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-03-11 11:28:43,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:28:43,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:28:43,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:28:43,970 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:28:43,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:28:43,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1119986983, now seen corresponding path program 1 times [2021-03-11 11:28:43,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:28:43,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331167814] [2021-03-11 11:28:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:28:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:28:44,094 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:28:44,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:28:44,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:28:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:28:44,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331167814] [2021-03-11 11:28:44,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:28:44,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:28:44,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278771863] [2021-03-11 11:28:44,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:28:44,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:28:44,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:28:44,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:28:44,107 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-03-11 11:28:44,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:28:44,124 INFO L93 Difference]: Finished difference Result 47 states and 79 transitions. [2021-03-11 11:28:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:28:44,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-03-11 11:28:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:28:44,126 INFO L225 Difference]: With dead ends: 47 [2021-03-11 11:28:44,126 INFO L226 Difference]: Without dead ends: 47 [2021-03-11 11:28:44,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:28:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-03-11 11:28:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-03-11 11:28:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 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) [2021-03-11 11:28:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2021-03-11 11:28:44,131 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2021-03-11 11:28:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:28:44,131 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2021-03-11 11:28:44,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-03-11 11:28:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2021-03-11 11:28:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:28:44,132 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:28:44,132 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:28:44,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:28:44,132 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:28:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:28:44,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1178093923, now seen corresponding path program 1 times [2021-03-11 11:28:44,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:28:44,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509781427] [2021-03-11 11:28:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:28:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:28:44,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:28:44,184 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:28:44,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:28:44,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:28:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:28:44,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509781427] [2021-03-11 11:28:44,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:28:44,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:28:44,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685692354] [2021-03-11 11:28:44,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:28:44,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:28:44,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:28:44,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:28:44,194 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-03-11 11:28:44,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:28:44,211 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-03-11 11:28:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:28:44,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-03-11 11:28:44,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:28:44,215 INFO L225 Difference]: With dead ends: 29 [2021-03-11 11:28:44,215 INFO L226 Difference]: Without dead ends: 29 [2021-03-11 11:28:44,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:28:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-03-11 11:28:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-03-11 11:28:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 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) [2021-03-11 11:28:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2021-03-11 11:28:44,228 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2021-03-11 11:28:44,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:28:44,228 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-03-11 11:28:44,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-03-11 11:28:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2021-03-11 11:28:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:28:44,229 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:28:44,229 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:28:44,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:28:44,229 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:28:44,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:28:44,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1777368621, now seen corresponding path program 1 times [2021-03-11 11:28:44,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:28:44,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223616484] [2021-03-11 11:28:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:28:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:28:44,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:28:44,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:28:44,295 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 11:28:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:28:44,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:28:44,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:28:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:28:44,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223616484] [2021-03-11 11:28:44,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:28:44,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:28:44,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669737469] [2021-03-11 11:28:44,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:28:44,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:28:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:28:44,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:28:44,314 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-03-11 11:28:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:28:44,355 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2021-03-11 11:28:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:28:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-03-11 11:28:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:28:44,356 INFO L225 Difference]: With dead ends: 37 [2021-03-11 11:28:44,356 INFO L226 Difference]: Without dead ends: 23 [2021-03-11 11:28:44,356 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:28:44,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-03-11 11:28:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-03-11 11:28:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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) [2021-03-11 11:28:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-03-11 11:28:44,359 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2021-03-11 11:28:44,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:28:44,359 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-03-11 11:28:44,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-03-11 11:28:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2021-03-11 11:28:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:28:44,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:28:44,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:28:44,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:28:44,365 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:28:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:28:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1101565587, now seen corresponding path program 2 times [2021-03-11 11:28:44,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:28:44,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894934379] [2021-03-11 11:28:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:28:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:28:44,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:28:44,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:28:44,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:28:44,428 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 11:28:44,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:28:44,437 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:28:44,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:28:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:28:44,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894934379] [2021-03-11 11:28:44,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:28:44,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:28:44,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137378970] [2021-03-11 11:28:44,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:28:44,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:28:44,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:28:44,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:28:44,449 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-03-11 11:28:44,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:28:44,487 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-03-11 11:28:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:28:44,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2021-03-11 11:28:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:28:44,488 INFO L225 Difference]: With dead ends: 29 [2021-03-11 11:28:44,488 INFO L226 Difference]: Without dead ends: 17 [2021-03-11 11:28:44,488 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-11 11:28:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-03-11 11:28:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-03-11 11:28:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-03-11 11:28:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-03-11 11:28:44,491 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2021-03-11 11:28:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:28:44,492 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-03-11 11:28:44,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-03-11 11:28:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-03-11 11:28:44,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:28:44,492 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:28:44,492 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:28:44,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:28:44,493 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:28:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:28:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1798170319, now seen corresponding path program 3 times [2021-03-11 11:28:44,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:28:44,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136191070] [2021-03-11 11:28:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:28:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:28:44,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:28:44,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:28:44,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:28:44,557 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 11:28:44,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:28:44,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:28:44,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:28:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:28:44,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136191070] [2021-03-11 11:28:44,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:28:44,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:28:44,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441860840] [2021-03-11 11:28:44,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:28:44,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:28:44,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:28:44,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:28:44,573 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-03-11 11:28:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:28:44,599 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-03-11 11:28:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:28:44,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-03-11 11:28:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:28:44,600 INFO L225 Difference]: With dead ends: 16 [2021-03-11 11:28:44,603 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:28:44,603 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:28:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:28:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:28:44,604 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) [2021-03-11 11:28:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:28:44,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-03-11 11:28:44,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:28:44,607 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:28:44,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-03-11 11:28:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:28:44,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:28:44,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:28:44,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:28:44 BasicIcfg [2021-03-11 11:28:44,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:28:44,612 INFO L168 Benchmark]: Toolchain (without parser) took 4273.23 ms. Allocated memory was 255.9 MB in the beginning and 465.6 MB in the end (delta: 209.7 MB). Free memory was 233.7 MB in the beginning and 382.7 MB in the end (delta: -149.0 MB). Peak memory consumption was 60.4 MB. Max. memory is 16.0 GB. [2021-03-11 11:28:44,612 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 82.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:28:44,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.03 ms. Allocated memory was 255.9 MB in the beginning and 388.0 MB in the end (delta: 132.1 MB). Free memory was 233.0 MB in the beginning and 352.5 MB in the end (delta: -119.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 11:28:44,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.28 ms. Allocated memory is still 388.0 MB. Free memory was 352.0 MB in the beginning and 350.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:28:44,616 INFO L168 Benchmark]: Boogie Preprocessor took 30.85 ms. Allocated memory is still 388.0 MB. Free memory was 350.2 MB in the beginning and 348.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:28:44,618 INFO L168 Benchmark]: RCFGBuilder took 361.66 ms. Allocated memory is still 388.0 MB. Free memory was 348.8 MB in the beginning and 328.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-11 11:28:44,619 INFO L168 Benchmark]: TraceAbstraction took 3371.50 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 328.3 MB in the beginning and 382.7 MB in the end (delta: -54.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:28:44,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 82.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 441.03 ms. Allocated memory was 255.9 MB in the beginning and 388.0 MB in the end (delta: 132.1 MB). Free memory was 233.0 MB in the beginning and 352.5 MB in the end (delta: -119.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.28 ms. Allocated memory is still 388.0 MB. Free memory was 352.0 MB in the beginning and 350.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.85 ms. Allocated memory is still 388.0 MB. Free memory was 350.2 MB in the beginning and 348.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 361.66 ms. Allocated memory is still 388.0 MB. Free memory was 348.8 MB in the beginning and 328.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3371.50 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 328.3 MB in the beginning and 382.7 MB in the end (delta: -54.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2307.5ms, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1276 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 793, positive: 739, positive conditional: 0, positive unconditional: 739, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 501, positive: 484, positive conditional: 0, positive unconditional: 484, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 501, positive: 478, positive conditional: 0, positive unconditional: 478, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 99, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 793, positive: 255, positive conditional: 0, positive unconditional: 255, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 501, unknown conditional: 0, unknown unconditional: 501] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3296.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 227.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2361.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 51 SDslu, 120 SDs, 0 SdLazy, 45 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 111.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.7ms SsaConstructionTime, 127.4ms SatisfiabilityAnalysisTime, 337.0ms InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...