/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/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:05:54,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:05:54,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:05:54,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:05:54,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:05:54,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:05:54,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:05:54,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:05:54,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:05:54,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:05:54,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:05:54,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:05:54,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:05:54,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:05:54,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:05:54,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:05:54,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:05:54,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:05:54,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:05:54,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:05:54,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:05:54,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:05:54,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:05:54,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:05:54,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:05:54,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:05:54,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:05:54,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:05:54,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:05:54,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:05:54,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:05:54,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:05:54,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:05:54,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:05:54,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:05:54,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:05:54,794 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 [2020-11-11 18:05:54,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:05:54,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:05:54,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:05:54,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:05:54,823 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:05:54,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:05:54,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:05:54,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:05:54,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:05:54,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:05:54,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:05:54,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:05:54,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:05:54,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:05:54,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:05:54,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:05:54,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:05:54,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:05:54,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:05:54,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:05:54,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:05:54,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:05:54,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:05:54,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:05:54,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:05:54,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:05:54,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:05:54,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:05:54,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:05:54,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:05:55,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:05:55,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:05:55,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:05:55,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:05:55,278 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:05:55,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-11-11 18:05:55,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02877ab33/1d55da4157da4a7d856fc60f8d7bf4af/FLAGec559e795 [2020-11-11 18:05:56,051 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:05:56,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-11-11 18:05:56,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02877ab33/1d55da4157da4a7d856fc60f8d7bf4af/FLAGec559e795 [2020-11-11 18:05:56,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02877ab33/1d55da4157da4a7d856fc60f8d7bf4af [2020-11-11 18:05:56,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:05:56,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:05:56,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:05:56,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:05:56,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:05:56,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:05:56" (1/1) ... [2020-11-11 18:05:56,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29876a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:56, skipping insertion in model container [2020-11-11 18:05:56,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:05:56" (1/1) ... [2020-11-11 18:05:56,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:05:56,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:05:56,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:05:56,999 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:05:57,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:05:57,142 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:05:57,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57 WrapperNode [2020-11-11 18:05:57,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:05:57,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:05:57,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:05:57,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:05:57,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:05:57,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:05:57,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:05:57,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:05:57,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (1/1) ... [2020-11-11 18:05:57,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:05:57,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:05:57,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:05:57,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:05:57,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (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 [2020-11-11 18:05:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:05:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:05:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:05:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:05:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:05:57,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:05:57,332 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:05:57,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:05:57,332 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:05:57,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:05:57,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:05:57,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:05:57,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:05:57,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:05:57,335 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:05:57,752 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:05:57,752 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:05:57,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:05:57 BoogieIcfgContainer [2020-11-11 18:05:57,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:05:57,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:05:57,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:05:57,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:05:57,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:05:56" (1/3) ... [2020-11-11 18:05:57,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b75fa2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:05:57, skipping insertion in model container [2020-11-11 18:05:57,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:05:57" (2/3) ... [2020-11-11 18:05:57,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b75fa2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:05:57, skipping insertion in model container [2020-11-11 18:05:57,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:05:57" (3/3) ... [2020-11-11 18:05:57,763 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-11-11 18:05:57,781 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:05:57,782 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:05:57,786 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:05:57,787 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:05:57,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,842 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,842 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,843 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,844 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,844 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,844 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,844 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,858 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,871 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,871 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,874 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:05:57,877 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:05:57,891 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:05:57,914 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:05:57,915 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:05:57,915 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:05:57,915 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:05:57,915 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:05:57,915 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:05:57,916 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:05:57,916 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:05:57,932 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 18:05:59,152 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) [2020-11-11 18:05:59,195 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) [2020-11-11 18:05:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:05:59,257 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:05:59,258 INFO L494 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] [2020-11-11 18:05:59,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:05:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:05:59,266 INFO L82 PathProgramCache]: Analyzing trace with hash 143249805, now seen corresponding path program 1 times [2020-11-11 18:05:59,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:05:59,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251373453] [2020-11-11 18:05:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:05:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:05:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:05:59,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251373453] [2020-11-11 18:05:59,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:05:59,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:05:59,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838580666] [2020-11-11 18:05:59,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:05:59,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:06:00,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:06:00,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:06:00,051 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) [2020-11-11 18:06:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:06:00,460 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2020-11-11 18:06:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:06:00,462 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 [2020-11-11 18:06:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:06:00,539 INFO L225 Difference]: With dead ends: 12200 [2020-11-11 18:06:00,540 INFO L226 Difference]: Without dead ends: 4605 [2020-11-11 18:06:00,542 INFO L749 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 [2020-11-11 18:06:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2020-11-11 18:06:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4605. [2020-11-11 18:06:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4605 states, 4604 states have (on average 3.415291051259774) internal successors, (15724), 4604 states have internal predecessors, (15724), 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) [2020-11-11 18:06:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 15724 transitions. [2020-11-11 18:06:01,034 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 15724 transitions. Word has length 42 [2020-11-11 18:06:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:06:01,036 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states and 15724 transitions. [2020-11-11 18:06:01,037 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) [2020-11-11 18:06:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 15724 transitions. [2020-11-11 18:06:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:06:01,049 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:06:01,050 INFO L494 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] [2020-11-11 18:06:01,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:06:01,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:06:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:06:01,051 INFO L82 PathProgramCache]: Analyzing trace with hash -521439444, now seen corresponding path program 1 times [2020-11-11 18:06:01,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:06:01,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415813252] [2020-11-11 18:06:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:06:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:06:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:06:01,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415813252] [2020-11-11 18:06:01,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:06:01,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:06:01,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651965361] [2020-11-11 18:06:01,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:06:01,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:06:01,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:06:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:06:01,311 INFO L87 Difference]: Start difference. First operand 4605 states and 15724 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2020-11-11 18:06:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:06:01,590 INFO L93 Difference]: Finished difference Result 5725 states and 19295 transitions. [2020-11-11 18:06:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:06:01,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2020-11-11 18:06:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:06:01,620 INFO L225 Difference]: With dead ends: 5725 [2020-11-11 18:06:01,620 INFO L226 Difference]: Without dead ends: 3030 [2020-11-11 18:06:01,622 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:06:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2020-11-11 18:06:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3030. [2020-11-11 18:06:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 3.2756685374711125) internal successors, (9922), 3029 states have internal predecessors, (9922), 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) [2020-11-11 18:06:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 9922 transitions. [2020-11-11 18:06:01,778 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 9922 transitions. Word has length 44 [2020-11-11 18:06:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:06:01,780 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 9922 transitions. [2020-11-11 18:06:01,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2020-11-11 18:06:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 9922 transitions. [2020-11-11 18:06:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:06:01,795 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:06:01,796 INFO L494 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] [2020-11-11 18:06:01,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:06:01,796 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:06:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:06:01,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1701093113, now seen corresponding path program 1 times [2020-11-11 18:06:01,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:06:01,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76693509] [2020-11-11 18:06:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:06:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:06:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:06:02,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76693509] [2020-11-11 18:06:02,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:06:02,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:06:02,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527963367] [2020-11-11 18:06:02,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:06:02,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:06:02,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:06:02,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:06:02,051 INFO L87 Difference]: Start difference. First operand 3030 states and 9922 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:06:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:06:02,280 INFO L93 Difference]: Finished difference Result 4030 states and 13024 transitions. [2020-11-11 18:06:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:06:02,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2020-11-11 18:06:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:06:02,297 INFO L225 Difference]: With dead ends: 4030 [2020-11-11 18:06:02,298 INFO L226 Difference]: Without dead ends: 1860 [2020-11-11 18:06:02,298 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:06:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2020-11-11 18:06:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1860. [2020-11-11 18:06:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 3.129639591178053) internal successors, (5818), 1859 states have internal predecessors, (5818), 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) [2020-11-11 18:06:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 5818 transitions. [2020-11-11 18:06:02,375 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 5818 transitions. Word has length 47 [2020-11-11 18:06:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:06:02,376 INFO L481 AbstractCegarLoop]: Abstraction has 1860 states and 5818 transitions. [2020-11-11 18:06:02,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:06:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 5818 transitions. [2020-11-11 18:06:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:06:02,383 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:06:02,383 INFO L494 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] [2020-11-11 18:06:02,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:06:02,384 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:06:02,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:06:02,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1947575922, now seen corresponding path program 1 times [2020-11-11 18:06:02,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:06:02,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034749093] [2020-11-11 18:06:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:06:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:06:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:06:02,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034749093] [2020-11-11 18:06:02,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:06:02,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:06:02,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136530583] [2020-11-11 18:06:02,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:06:02,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:06:02,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:06:02,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:06:02,556 INFO L87 Difference]: Start difference. First operand 1860 states and 5818 transitions. 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) [2020-11-11 18:06:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:06:02,749 INFO L93 Difference]: Finished difference Result 2326 states and 7223 transitions. [2020-11-11 18:06:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:06:02,750 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 [2020-11-11 18:06:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:06:02,766 INFO L225 Difference]: With dead ends: 2326 [2020-11-11 18:06:02,766 INFO L226 Difference]: Without dead ends: 1734 [2020-11-11 18:06:02,767 INFO L749 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 [2020-11-11 18:06:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-11-11 18:06:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1734. [2020-11-11 18:06:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 3.1096364685516447) internal successors, (5389), 1733 states have internal predecessors, (5389), 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) [2020-11-11 18:06:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 5389 transitions. [2020-11-11 18:06:02,854 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 5389 transitions. Word has length 50 [2020-11-11 18:06:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:06:02,854 INFO L481 AbstractCegarLoop]: Abstraction has 1734 states and 5389 transitions. [2020-11-11 18:06:02,855 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) [2020-11-11 18:06:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 5389 transitions. [2020-11-11 18:06:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:06:02,865 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:06:02,865 INFO L494 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] [2020-11-11 18:06:02,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:06:02,865 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:06:02,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:06:02,867 INFO L82 PathProgramCache]: Analyzing trace with hash 58790281, now seen corresponding path program 1 times [2020-11-11 18:06:02,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:06:02,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787107161] [2020-11-11 18:06:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:06:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:06:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:06:03,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787107161] [2020-11-11 18:06:03,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:06:03,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:06:03,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578339053] [2020-11-11 18:06:03,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:06:03,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:06:03,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:06:03,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:06:03,052 INFO L87 Difference]: Start difference. First operand 1734 states and 5389 transitions. 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) [2020-11-11 18:06:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:06:03,256 INFO L93 Difference]: Finished difference Result 1893 states and 5756 transitions. [2020-11-11 18:06:03,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:06:03,257 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 [2020-11-11 18:06:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:06:03,279 INFO L225 Difference]: With dead ends: 1893 [2020-11-11 18:06:03,279 INFO L226 Difference]: Without dead ends: 1389 [2020-11-11 18:06:03,279 INFO L749 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 [2020-11-11 18:06:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-11-11 18:06:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2020-11-11 18:06:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 3.0036023054755043) internal successors, (4169), 1388 states have internal predecessors, (4169), 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) [2020-11-11 18:06:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4169 transitions. [2020-11-11 18:06:03,330 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4169 transitions. Word has length 51 [2020-11-11 18:06:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:06:03,331 INFO L481 AbstractCegarLoop]: Abstraction has 1389 states and 4169 transitions. [2020-11-11 18:06:03,331 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) [2020-11-11 18:06:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4169 transitions. [2020-11-11 18:06:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-11 18:06:03,336 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:06:03,336 INFO L494 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] [2020-11-11 18:06:03,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:06:03,337 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:06:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:06:03,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1533825064, now seen corresponding path program 1 times [2020-11-11 18:06:03,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:06:03,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626113341] [2020-11-11 18:06:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:06:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:06:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:06:03,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626113341] [2020-11-11 18:06:03,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:06:03,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:06:03,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337511289] [2020-11-11 18:06:03,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:06:03,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:06:03,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:06:03,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:06:03,465 INFO L87 Difference]: Start difference. First operand 1389 states and 4169 transitions. 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) [2020-11-11 18:06:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:06:03,705 INFO L93 Difference]: Finished difference Result 1155 states and 3326 transitions. [2020-11-11 18:06:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:06:03,709 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 [2020-11-11 18:06:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:06:03,716 INFO L225 Difference]: With dead ends: 1155 [2020-11-11 18:06:03,716 INFO L226 Difference]: Without dead ends: 831 [2020-11-11 18:06:03,717 INFO L749 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 [2020-11-11 18:06:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-11-11 18:06:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2020-11-11 18:06:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 2.7819277108433735) internal successors, (2309), 830 states have internal predecessors, (2309), 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) [2020-11-11 18:06:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2309 transitions. [2020-11-11 18:06:03,742 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2309 transitions. Word has length 52 [2020-11-11 18:06:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:06:03,742 INFO L481 AbstractCegarLoop]: Abstraction has 831 states and 2309 transitions. [2020-11-11 18:06:03,742 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) [2020-11-11 18:06:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2309 transitions. [2020-11-11 18:06:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:06:03,745 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:06:03,745 INFO L494 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] [2020-11-11 18:06:03,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:06:03,745 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:06:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:06:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash 2090541767, now seen corresponding path program 1 times [2020-11-11 18:06:03,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:06:03,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754126430] [2020-11-11 18:06:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:06:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:06:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:06:03,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754126430] [2020-11-11 18:06:03,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:06:03,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:06:03,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825792913] [2020-11-11 18:06:03,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:06:03,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:06:03,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:06:03,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:06:03,887 INFO L87 Difference]: Start difference. First operand 831 states and 2309 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2020-11-11 18:06:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:06:03,981 INFO L93 Difference]: Finished difference Result 723 states and 1985 transitions. [2020-11-11 18:06:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 18:06:03,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 [2020-11-11 18:06:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:06:03,982 INFO L225 Difference]: With dead ends: 723 [2020-11-11 18:06:03,982 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:06:03,983 INFO L749 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 [2020-11-11 18:06:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:06:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:06:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:06:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:06:03,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-11 18:06:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:06:03,984 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:06:03,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2020-11-11 18:06:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:06:03,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:06:03,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:06:03,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:06:03 BasicIcfg [2020-11-11 18:06:03,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:06:03,993 INFO L168 Benchmark]: Toolchain (without parser) took 7659.03 ms. Allocated memory was 302.0 MB in the beginning and 713.0 MB in the end (delta: 411.0 MB). Free memory was 276.9 MB in the beginning and 585.7 MB in the end (delta: -308.7 MB). Peak memory consumption was 104.0 MB. Max. memory is 16.0 GB. [2020-11-11 18:06:03,993 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:06:03,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.93 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.7 MB in the end (delta: 30.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-11 18:06:03,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:06:03,996 INFO L168 Benchmark]: Boogie Preprocessor took 35.95 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:06:03,997 INFO L168 Benchmark]: RCFGBuilder took 520.43 ms. Allocated memory is still 302.0 MB. Free memory was 242.3 MB in the beginning and 264.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-11 18:06:03,998 INFO L168 Benchmark]: TraceAbstraction took 6234.11 ms. Allocated memory was 302.0 MB in the beginning and 713.0 MB in the end (delta: 411.0 MB). Free memory was 264.6 MB in the beginning and 585.7 MB in the end (delta: -321.0 MB). Peak memory consumption was 89.0 MB. Max. memory is 16.0 GB. [2020-11-11 18:06:04,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 802.93 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.7 MB in the end (delta: 30.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.95 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 520.43 ms. Allocated memory is still 302.0 MB. Free memory was 242.3 MB in the beginning and 264.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6234.11 ms. Allocated memory was 302.0 MB in the beginning and 713.0 MB in the end (delta: 411.0 MB). Free memory was 264.6 MB in the beginning and 585.7 MB in the end (delta: -321.0 MB). Peak memory consumption was 89.0 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: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 632 SDtfs, 1025 SDslu, 2012 SDs, 0 SdLazy, 249 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s 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: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 333 ConstructedInterpolants, 0 QuantifiedInterpolants, 41977 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...