/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:57:32,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:57:32,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:57:32,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:57:32,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:57:32,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:57:32,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:57:32,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:57:32,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:57:32,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:57:32,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:57:32,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:57:32,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:57:32,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:57:32,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:57:32,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:57:32,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:57:32,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:57:32,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:57:32,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:57:32,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:57:32,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:57:32,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:57:32,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:57:32,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:57:32,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:57:32,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:57:32,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:57:32,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:57:32,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:57:32,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:57:32,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:57:32,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:57:32,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:57:32,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:57:32,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:57:32,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2020-12-17 23:57:32,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:57:32,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:57:32,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:57:32,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:57:32,729 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:57:32,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:57:32,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:57:32,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:57:32,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:57:32,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:57:32,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:57:32,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:57:32,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:57:32,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:57:32,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:57:32,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:57:32,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:57:32,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:57:32,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:57:32,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:57:32,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:57:32,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:57:32,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:57:32,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:57:32,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:57:32,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:57:32,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:57:32,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:57:32,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:57:32,736 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:57:32,736 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:57:32,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:57:33,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:57:33,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:57:33,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:57:33,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:57:33,183 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:57:33,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-12-17 23:57:33,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf218355/70a3eff6eebc4f4cba06cdeeb99e57b8/FLAGce984c1d8 [2020-12-17 23:57:34,044 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:57:34,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-12-17 23:57:34,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf218355/70a3eff6eebc4f4cba06cdeeb99e57b8/FLAGce984c1d8 [2020-12-17 23:57:34,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf218355/70a3eff6eebc4f4cba06cdeeb99e57b8 [2020-12-17 23:57:34,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:57:34,322 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:57:34,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:57:34,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:57:34,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:57:34,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:34,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a398758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34, skipping insertion in model container [2020-12-17 23:57:34,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:34,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:57:34,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:57:34,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:57:34,775 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:57:34,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:57:34,992 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:57:34,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34 WrapperNode [2020-12-17 23:57:34,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:57:34,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:57:34,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:57:34,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:57:35,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:57:35,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:57:35,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:57:35,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:57:35,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... [2020-12-17 23:57:35,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:57:35,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:57:35,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:57:35,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:57:35,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:57:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:57:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:57:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:57:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:57:35,159 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:57:35,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:57:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:57:35,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:57:35,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:57:35,163 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:57:35,695 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:57:35,695 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:57:35,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:57:35 BoogieIcfgContainer [2020-12-17 23:57:35,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:57:35,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:57:35,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:57:35,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:57:35,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:57:34" (1/3) ... [2020-12-17 23:57:35,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbbb669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:57:35, skipping insertion in model container [2020-12-17 23:57:35,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:57:34" (2/3) ... [2020-12-17 23:57:35,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbbb669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:57:35, skipping insertion in model container [2020-12-17 23:57:35,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:57:35" (3/3) ... [2020-12-17 23:57:35,708 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-12-17 23:57:35,726 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:57:35,726 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:57:35,730 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:57:35,731 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:57:35,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,771 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,771 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,771 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,771 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,775 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,775 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,777 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,777 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,777 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,777 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,778 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,778 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,778 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,778 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,783 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,783 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,784 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,790 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,795 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,795 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,795 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:57:35,799 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:57:35,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:57:35,840 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:57:35,841 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:57:35,841 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:57:35,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:57:35,841 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:57:35,841 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:57:35,842 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:57:35,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:57:35,856 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2020-12-17 23:57:36,812 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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) [2020-12-17 23:57:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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) [2020-12-17 23:57:36,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-17 23:57:36,895 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:36,896 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:36,897 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:36,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1677715490, now seen corresponding path program 1 times [2020-12-17 23:57:36,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:36,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126885985] [2020-12-17 23:57:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:37,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126885985] [2020-12-17 23:57:37,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:37,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:57:37,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216061573] [2020-12-17 23:57:37,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:57:37,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:37,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:57:37,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:57:37,465 INFO L87 Difference]: Start difference. First operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2020-12-17 23:57:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:37,906 INFO L93 Difference]: Finished difference Result 10463 states and 36159 transitions. [2020-12-17 23:57:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:57:37,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2020-12-17 23:57:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:37,912 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:57:37,912 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 36159 transitions. Word has length 41 [2020-12-17 23:57:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:37,914 INFO L481 AbstractCegarLoop]: Abstraction has 10463 states and 36159 transitions. [2020-12-17 23:57:37,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2020-12-17 23:57:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 36159 transitions. [2020-12-17 23:57:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 23:57:37,930 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:37,931 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:37,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:57:37,931 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:37,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1722165763, now seen corresponding path program 1 times [2020-12-17 23:57:37,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:37,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710319365] [2020-12-17 23:57:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:38,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710319365] [2020-12-17 23:57:38,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:38,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:57:38,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822096202] [2020-12-17 23:57:38,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:57:38,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:38,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:57:38,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:57:38,256 INFO L87 Difference]: Start difference. First operand 10463 states and 36159 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 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) [2020-12-17 23:57:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:38,677 INFO L93 Difference]: Finished difference Result 16391 states and 56271 transitions. [2020-12-17 23:57:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:57:38,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 23:57:38,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:38,679 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:57:38,680 INFO L78 Accepts]: Start accepts. Automaton has 16391 states and 56271 transitions. Word has length 43 [2020-12-17 23:57:38,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:38,680 INFO L481 AbstractCegarLoop]: Abstraction has 16391 states and 56271 transitions. [2020-12-17 23:57:38,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 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) [2020-12-17 23:57:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 16391 states and 56271 transitions. [2020-12-17 23:57:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-17 23:57:38,703 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:38,704 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:38,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:57:38,704 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:38,705 INFO L82 PathProgramCache]: Analyzing trace with hash -76177078, now seen corresponding path program 1 times [2020-12-17 23:57:38,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:38,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663920209] [2020-12-17 23:57:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:38,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663920209] [2020-12-17 23:57:38,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:38,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:57:38,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244334939] [2020-12-17 23:57:38,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:57:38,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:38,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:57:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:57:38,957 INFO L87 Difference]: Start difference. First operand 16391 states and 56271 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:57:39,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:39,430 INFO L93 Difference]: Finished difference Result 11477 states and 38398 transitions. [2020-12-17 23:57:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:57:39,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-12-17 23:57:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:39,432 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:57:39,432 INFO L78 Accepts]: Start accepts. Automaton has 11477 states and 38398 transitions. Word has length 45 [2020-12-17 23:57:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:39,433 INFO L481 AbstractCegarLoop]: Abstraction has 11477 states and 38398 transitions. [2020-12-17 23:57:39,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:57:39,433 INFO L276 IsEmpty]: Start isEmpty. Operand 11477 states and 38398 transitions. [2020-12-17 23:57:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 23:57:39,451 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:39,452 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:39,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:57:39,452 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:39,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1683529846, now seen corresponding path program 1 times [2020-12-17 23:57:39,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:39,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338684865] [2020-12-17 23:57:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:39,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338684865] [2020-12-17 23:57:39,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:39,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:57:39,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695174925] [2020-12-17 23:57:39,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:57:39,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:57:39,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:57:39,743 INFO L87 Difference]: Start difference. First operand 11477 states and 38398 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-12-17 23:57:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:40,153 INFO L93 Difference]: Finished difference Result 7085 states and 22966 transitions. [2020-12-17 23:57:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:57:40,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-12-17 23:57:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:40,155 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:57:40,155 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 22966 transitions. Word has length 46 [2020-12-17 23:57:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:40,156 INFO L481 AbstractCegarLoop]: Abstraction has 7085 states and 22966 transitions. [2020-12-17 23:57:40,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-12-17 23:57:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 22966 transitions. [2020-12-17 23:57:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 23:57:40,171 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:40,171 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:40,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:57:40,172 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:40,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:40,173 INFO L82 PathProgramCache]: Analyzing trace with hash 563011175, now seen corresponding path program 1 times [2020-12-17 23:57:40,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:40,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465318108] [2020-12-17 23:57:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:40,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465318108] [2020-12-17 23:57:40,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:40,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:57:40,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604538542] [2020-12-17 23:57:40,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:57:40,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:40,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:57:40,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:57:40,398 INFO L87 Difference]: Start difference. First operand 7085 states and 22966 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2020-12-17 23:57:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:41,005 INFO L93 Difference]: Finished difference Result 4781 states and 15385 transitions. [2020-12-17 23:57:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:57:41,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 [2020-12-17 23:57:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:41,007 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:57:41,007 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 15385 transitions. Word has length 48 [2020-12-17 23:57:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:41,008 INFO L481 AbstractCegarLoop]: Abstraction has 4781 states and 15385 transitions. [2020-12-17 23:57:41,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2020-12-17 23:57:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 15385 transitions. [2020-12-17 23:57:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-17 23:57:41,032 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:41,032 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:41,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:57:41,033 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:41,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1443652201, now seen corresponding path program 1 times [2020-12-17 23:57:41,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:41,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884287050] [2020-12-17 23:57:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:41,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884287050] [2020-12-17 23:57:41,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:41,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:57:41,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819959790] [2020-12-17 23:57:41,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:57:41,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:41,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:57:41,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:57:41,185 INFO L87 Difference]: Start difference. First operand 4781 states and 15385 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2020-12-17 23:57:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:41,446 INFO L93 Difference]: Finished difference Result 7136 states and 22720 transitions. [2020-12-17 23:57:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:57:41,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 [2020-12-17 23:57:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:41,448 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:57:41,449 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 22720 transitions. Word has length 52 [2020-12-17 23:57:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:41,449 INFO L481 AbstractCegarLoop]: Abstraction has 7136 states and 22720 transitions. [2020-12-17 23:57:41,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2020-12-17 23:57:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 22720 transitions. [2020-12-17 23:57:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-17 23:57:41,467 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:41,467 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:41,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:57:41,468 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1808649785, now seen corresponding path program 2 times [2020-12-17 23:57:41,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:41,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140098563] [2020-12-17 23:57:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:41,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140098563] [2020-12-17 23:57:41,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:41,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:57:41,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791733432] [2020-12-17 23:57:41,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:57:41,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:41,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:57:41,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:57:41,601 INFO L87 Difference]: Start difference. First operand 7136 states and 22720 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) [2020-12-17 23:57:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:41,800 INFO L93 Difference]: Finished difference Result 11042 states and 34652 transitions. [2020-12-17 23:57:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-17 23:57:41,801 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 [2020-12-17 23:57:41,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:41,802 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-17 23:57:41,802 INFO L78 Accepts]: Start accepts. Automaton has 11042 states and 34652 transitions. Word has length 52 [2020-12-17 23:57:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:41,803 INFO L481 AbstractCegarLoop]: Abstraction has 11042 states and 34652 transitions. [2020-12-17 23:57:41,803 INFO L482 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) [2020-12-17 23:57:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 11042 states and 34652 transitions. [2020-12-17 23:57:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-17 23:57:41,828 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:57:41,829 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:57:41,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:57:41,829 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:57:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:57:41,830 INFO L82 PathProgramCache]: Analyzing trace with hash 976887845, now seen corresponding path program 3 times [2020-12-17 23:57:41,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:57:41,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250254765] [2020-12-17 23:57:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:57:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:57:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:57:42,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250254765] [2020-12-17 23:57:42,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:57:42,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:57:42,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311470200] [2020-12-17 23:57:42,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:57:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:57:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:57:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:57:42,018 INFO L87 Difference]: Start difference. First operand 11042 states and 34652 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2020-12-17 23:57:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:57:42,344 INFO L93 Difference]: Finished difference Result 17724 states and 55418 transitions. [2020-12-17 23:57:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:57:42,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 [2020-12-17 23:57:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:57:42,345 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:57:42,345 INFO L78 Accepts]: Start accepts. Automaton has 17724 states and 55418 transitions. Word has length 52 [2020-12-17 23:57:42,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:57:42,346 INFO L481 AbstractCegarLoop]: Abstraction has 17724 states and 55418 transitions. [2020-12-17 23:57:42,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2020-12-17 23:57:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 17724 states and 55418 transitions. [2020-12-17 23:57:42,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:57:42,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-17 23:57:42,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:57:42 BasicIcfg [2020-12-17 23:57:42,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:57:42,390 INFO L168 Benchmark]: Toolchain (without parser) took 8067.82 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 788.5 MB). Free memory was 275.8 MB in the beginning and 886.0 MB in the end (delta: -610.2 MB). Peak memory consumption was 180.4 MB. Max. memory is 16.0 GB. [2020-12-17 23:57:42,391 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:57:42,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.57 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 274.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-12-17 23:57:42,393 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.78 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 272.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:57:42,393 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 271.1 MB in the end (delta: 943.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:57:42,394 INFO L168 Benchmark]: RCFGBuilder took 623.27 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 249.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:57:42,395 INFO L168 Benchmark]: TraceAbstraction took 6688.08 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 788.5 MB). Free memory was 248.5 MB in the beginning and 886.0 MB in the end (delta: -637.5 MB). Peak memory consumption was 153.4 MB. Max. memory is 16.0 GB. [2020-12-17 23:57:42,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 668.57 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 274.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.78 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 272.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.48 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 271.1 MB in the end (delta: 943.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 623.27 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 249.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6688.08 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 788.5 MB). Free memory was 248.5 MB in the beginning and 886.0 MB in the end (delta: -637.5 MB). Peak memory consumption was 153.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 835 SDtfs, 1351 SDslu, 2893 SDs, 0 SdLazy, 321 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17724occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 46089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...