/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:47:10,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:47:10,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:47:10,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:47:10,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:47:10,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:47:10,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:47:10,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:47:10,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:47:10,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:47:10,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:47:10,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:47:10,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:47:10,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:47:10,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:47:10,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:47:10,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:47:10,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:47:10,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:47:10,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:47:10,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:47:10,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:47:10,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:47:10,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:47:10,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 14:47:10,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 14:47:10,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 14:47:10,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 14:47:10,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 14:47:10,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 14:47:10,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:47:10,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:47:10,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:47:10,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:47:10,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:47:10,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:47:10,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:47:10,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:47:10,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:47:10,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:47:10,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:47:10,779 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.epf [2021-01-20 14:47:10,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:47:10,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:47:10,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:47:10,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:47:10,809 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:47:10,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:47:10,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:47:10,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:47:10,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:47:10,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:47:10,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:47:10,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:47:10,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:47:10,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:47:10,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:47:10,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:47:10,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:47:10,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:47:10,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:47:10,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:47:10,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:47:10,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:47:10,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:47:10,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:47:10,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:47:10,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:47:10,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:47:10,815 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:47:10,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:47:10,816 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:47:10,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:47:11,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:47:11,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:47:11,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:47:11,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:47:11,209 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:47:11,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-01-20 14:47:11,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805d2c7d0/ade377e50c0a44bfae7d6ebf36773806/FLAG6f95afb7f [2021-01-20 14:47:11,971 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:47:11,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-01-20 14:47:11,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805d2c7d0/ade377e50c0a44bfae7d6ebf36773806/FLAG6f95afb7f [2021-01-20 14:47:12,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805d2c7d0/ade377e50c0a44bfae7d6ebf36773806 [2021-01-20 14:47:12,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:47:12,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:47:12,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:47:12,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:47:12,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:47:12,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:47:12" (1/1) ... [2021-01-20 14:47:12,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e04b91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:12, skipping insertion in model container [2021-01-20 14:47:12,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:47:12" (1/1) ... [2021-01-20 14:47:12,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:47:12,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:47:12,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:47:12,851 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:47:12,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:47:13,049 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:47:13,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13 WrapperNode [2021-01-20 14:47:13,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:47:13,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:47:13,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:47:13,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:47:13,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:47:13,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:47:13,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:47:13,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:47:13,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... [2021-01-20 14:47:13,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:47:13,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:47:13,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:47:13,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:47:13,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:47:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:47:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:47:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:47:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:47:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:47:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:47:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:47:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:47:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:47:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:47:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:47:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:47:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:47:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:47:13,317 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:47:13,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:47:13,842 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:47:13,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:47:13 BoogieIcfgContainer [2021-01-20 14:47:13,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:47:13,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:47:13,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:47:13,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:47:13,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:47:12" (1/3) ... [2021-01-20 14:47:13,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6677b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:47:13, skipping insertion in model container [2021-01-20 14:47:13,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:13" (2/3) ... [2021-01-20 14:47:13,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6677b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:47:13, skipping insertion in model container [2021-01-20 14:47:13,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:47:13" (3/3) ... [2021-01-20 14:47:13,857 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2021-01-20 14:47:13,874 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:47:13,874 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:47:13,878 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:47:13,879 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:47:13,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,925 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,928 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,928 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,928 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,928 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,931 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,931 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,932 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,932 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,933 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,933 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,933 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,933 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,933 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,934 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,934 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,944 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,944 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,944 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,955 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,955 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,955 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,956 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:13,960 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:47:13,973 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:47:14,010 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:47:14,011 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:47:14,011 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:47:14,011 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:47:14,011 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:47:14,011 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:47:14,011 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:47:14,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:47:14,027 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 14:47:14,849 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 14:47:14,939 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:14,940 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:14,940 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:14,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1953454049, now seen corresponding path program 1 times [2021-01-20 14:47:14,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:14,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505782115] [2021-01-20 14:47:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:15,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505782115] [2021-01-20 14:47:15,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:15,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:15,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346572510] [2021-01-20 14:47:15,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:15,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:15,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:15,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:15,509 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:15,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:15,870 INFO L93 Difference]: Finished difference Result 11318 states and 39237 transitions. [2021-01-20 14:47:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:15,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-01-20 14:47:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:15,929 INFO L225 Difference]: With dead ends: 11318 [2021-01-20 14:47:15,929 INFO L226 Difference]: Without dead ends: 4213 [2021-01-20 14:47:15,931 INFO L769 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 [2021-01-20 14:47:15,931 INFO L78 Accepts]: Start accepts. Automaton has 4213 states. Word has length 42 [2021-01-20 14:47:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:15,933 INFO L481 AbstractCegarLoop]: Abstraction has 4213 states. [2021-01-20 14:47:15,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states. [2021-01-20 14:47:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:47:15,949 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:15,949 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:15,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:47:15,950 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:15,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1558378250, now seen corresponding path program 1 times [2021-01-20 14:47:15,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:15,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675885587] [2021-01-20 14:47:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:16,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675885587] [2021-01-20 14:47:16,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:16,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:16,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525852705] [2021-01-20 14:47:16,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:16,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:16,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:16,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:16,093 INFO L87 Difference]: Start difference. First operand 4213 states. 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) [2021-01-20 14:47:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:16,414 INFO L93 Difference]: Finished difference Result 6434 states and 21456 transitions. [2021-01-20 14:47:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:16,415 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 [2021-01-20 14:47:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:16,443 INFO L225 Difference]: With dead ends: 6434 [2021-01-20 14:47:16,443 INFO L226 Difference]: Without dead ends: 3235 [2021-01-20 14:47:16,444 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:16,445 INFO L78 Accepts]: Start accepts. Automaton has 3235 states. Word has length 45 [2021-01-20 14:47:16,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:16,445 INFO L481 AbstractCegarLoop]: Abstraction has 3235 states. [2021-01-20 14:47:16,445 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) [2021-01-20 14:47:16,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states. [2021-01-20 14:47:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:47:16,456 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:16,456 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] [2021-01-20 14:47:16,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:47:16,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash -529352823, now seen corresponding path program 1 times [2021-01-20 14:47:16,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:16,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830055860] [2021-01-20 14:47:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:16,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830055860] [2021-01-20 14:47:16,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:16,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:16,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055849399] [2021-01-20 14:47:16,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:16,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:16,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:16,686 INFO L87 Difference]: Start difference. First operand 3235 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:16,851 INFO L93 Difference]: Finished difference Result 3475 states and 11384 transitions. [2021-01-20 14:47:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:16,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2021-01-20 14:47:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:16,876 INFO L225 Difference]: With dead ends: 3475 [2021-01-20 14:47:16,876 INFO L226 Difference]: Without dead ends: 2915 [2021-01-20 14:47:16,877 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:16,877 INFO L78 Accepts]: Start accepts. Automaton has 2915 states. Word has length 47 [2021-01-20 14:47:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:16,878 INFO L481 AbstractCegarLoop]: Abstraction has 2915 states. [2021-01-20 14:47:16,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states. [2021-01-20 14:47:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:47:16,888 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:16,888 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] [2021-01-20 14:47:16,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:47:16,889 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1641571734, now seen corresponding path program 1 times [2021-01-20 14:47:16,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:16,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522193049] [2021-01-20 14:47:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522193049] [2021-01-20 14:47:17,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:17,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:17,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665646139] [2021-01-20 14:47:17,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:17,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:17,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:17,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:17,008 INFO L87 Difference]: Start difference. First operand 2915 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:17,223 INFO L93 Difference]: Finished difference Result 3855 states and 12593 transitions. [2021-01-20 14:47:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:47:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2021-01-20 14:47:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:17,241 INFO L225 Difference]: With dead ends: 3855 [2021-01-20 14:47:17,241 INFO L226 Difference]: Without dead ends: 2090 [2021-01-20 14:47:17,242 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:47:17,242 INFO L78 Accepts]: Start accepts. Automaton has 2090 states. Word has length 49 [2021-01-20 14:47:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:17,243 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states. [2021-01-20 14:47:17,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states. [2021-01-20 14:47:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:47:17,250 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:17,250 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] [2021-01-20 14:47:17,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:47:17,251 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:17,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1854967778, now seen corresponding path program 1 times [2021-01-20 14:47:17,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:17,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669720224] [2021-01-20 14:47:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:17,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669720224] [2021-01-20 14:47:17,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:17,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:17,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990800680] [2021-01-20 14:47:17,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:17,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:17,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:17,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:17,366 INFO L87 Difference]: Start difference. First operand 2090 states. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:17,505 INFO L93 Difference]: Finished difference Result 2646 states and 8314 transitions. [2021-01-20 14:47:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:17,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2021-01-20 14:47:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:17,521 INFO L225 Difference]: With dead ends: 2646 [2021-01-20 14:47:17,522 INFO L226 Difference]: Without dead ends: 1934 [2021-01-20 14:47:17,522 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:17,522 INFO L78 Accepts]: Start accepts. Automaton has 1934 states. Word has length 50 [2021-01-20 14:47:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:17,523 INFO L481 AbstractCegarLoop]: Abstraction has 1934 states. [2021-01-20 14:47:17,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states. [2021-01-20 14:47:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:47:17,531 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:17,531 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] [2021-01-20 14:47:17,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:47:17,532 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:17,532 INFO L82 PathProgramCache]: Analyzing trace with hash -250295335, now seen corresponding path program 1 times [2021-01-20 14:47:17,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:17,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076535804] [2021-01-20 14:47:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:17,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076535804] [2021-01-20 14:47:17,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:17,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:17,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385930219] [2021-01-20 14:47:17,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:17,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:17,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:17,699 INFO L87 Difference]: Start difference. First operand 1934 states. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:17,898 INFO L93 Difference]: Finished difference Result 2114 states and 6487 transitions. [2021-01-20 14:47:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:47:17,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-01-20 14:47:17,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:17,926 INFO L225 Difference]: With dead ends: 2114 [2021-01-20 14:47:17,926 INFO L226 Difference]: Without dead ends: 1514 [2021-01-20 14:47:17,926 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:47:17,927 INFO L78 Accepts]: Start accepts. Automaton has 1514 states. Word has length 51 [2021-01-20 14:47:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:17,931 INFO L481 AbstractCegarLoop]: Abstraction has 1514 states. [2021-01-20 14:47:17,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states. [2021-01-20 14:47:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:47:17,939 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:17,939 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] [2021-01-20 14:47:17,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:47:17,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1821297602, now seen corresponding path program 1 times [2021-01-20 14:47:17,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:17,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068019457] [2021-01-20 14:47:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:18,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068019457] [2021-01-20 14:47:18,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:18,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:47:18,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677240729] [2021-01-20 14:47:18,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:47:18,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:47:18,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:47:18,149 INFO L87 Difference]: Start difference. First operand 1514 states. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:18,365 INFO L93 Difference]: Finished difference Result 1271 states and 3696 transitions. [2021-01-20 14:47:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:47:18,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 14:47:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:18,369 INFO L225 Difference]: With dead ends: 1271 [2021-01-20 14:47:18,369 INFO L226 Difference]: Without dead ends: 911 [2021-01-20 14:47:18,370 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:47:18,370 INFO L78 Accepts]: Start accepts. Automaton has 911 states. Word has length 52 [2021-01-20 14:47:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:18,371 INFO L481 AbstractCegarLoop]: Abstraction has 911 states. [2021-01-20 14:47:18,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:18,371 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states. [2021-01-20 14:47:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:47:18,374 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:18,375 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, 1, 1] [2021-01-20 14:47:18,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:47:18,375 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:18,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:18,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2028376861, now seen corresponding path program 1 times [2021-01-20 14:47:18,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:18,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985396681] [2021-01-20 14:47:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:18,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985396681] [2021-01-20 14:47:18,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:18,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:18,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693028481] [2021-01-20 14:47:18,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:18,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:18,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:18,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:18,484 INFO L87 Difference]: Start difference. First operand 911 states. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:18,593 INFO L93 Difference]: Finished difference Result 803 states and 2235 transitions. [2021-01-20 14:47:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:47:18,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-01-20 14:47:18,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:18,594 INFO L225 Difference]: With dead ends: 803 [2021-01-20 14:47:18,595 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:47:18,595 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:18,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 54 [2021-01-20 14:47:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:18,596 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:47:18,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:47:18,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:47:18,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:47:18,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:47:18 BasicIcfg [2021-01-20 14:47:18,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:47:18,611 INFO L168 Benchmark]: Toolchain (without parser) took 6318.52 ms. Allocated memory was 302.0 MB in the beginning and 627.0 MB in the end (delta: 325.1 MB). Free memory was 276.9 MB in the beginning and 443.3 MB in the end (delta: -166.4 MB). Peak memory consumption was 160.3 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:18,613 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.1 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:47:18,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.23 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.8 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:18,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.38 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:18,615 INFO L168 Benchmark]: Boogie Preprocessor took 76.25 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.5 MB in the end (delta: -40.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:18,616 INFO L168 Benchmark]: RCFGBuilder took 629.50 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 260.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:18,619 INFO L168 Benchmark]: TraceAbstraction took 4753.63 ms. Allocated memory was 302.0 MB in the beginning and 627.0 MB in the end (delta: 325.1 MB). Free memory was 260.4 MB in the beginning and 443.3 MB in the end (delta: -182.9 MB). Peak memory consumption was 143.2 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:18,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.1 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 762.23 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.8 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 85.38 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 76.25 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.5 MB in the end (delta: -40.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * RCFGBuilder took 629.50 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 260.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4753.63 ms. Allocated memory was 302.0 MB in the beginning and 627.0 MB in the end (delta: 325.1 MB). Free memory was 260.4 MB in the beginning and 443.3 MB in the end (delta: -182.9 MB). Peak memory consumption was 143.2 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 765 SDtfs, 1029 SDslu, 2425 SDs, 0 SdLazy, 305 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred in iteration=0, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 48748 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...