/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/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:34:28,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:34:28,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:34:28,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:34:28,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:34:28,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:34:28,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:34:28,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:34:28,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:34:28,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:34:28,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:34:28,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:34:28,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:34:28,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:34:28,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:34:28,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:34:28,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:34:28,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:34:28,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:34:28,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:34:28,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:34:28,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:34:28,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:34:28,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:34:28,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 17:34:28,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:34:28,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:34:28,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:34:28,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:34:28,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:34:28,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:34:28,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:34:28,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:34:28,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:34:28,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:34:28,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:34:28,089 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 [2021-01-26 17:34:28,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:34:28,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:34:28,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:34:28,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:34:28,120 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:34:28,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:34:28,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:34:28,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:34:28,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:34:28,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:34:28,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:34:28,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:34:28,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:34:28,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:34:28,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:34:28,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:34:28,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:34:28,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:34:28,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:34:28,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:34:28,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:34:28,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:34:28,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:34:28,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:34:28,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:34:28,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:34:28,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:34:28,126 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:34:28,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:34:28,126 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:34:28,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:34:28,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:34:28,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:34:28,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:34:28,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:34:28,596 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:34:28,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-01-26 17:34:28,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd16f0043/bc85422da7be478a82d3316785f57f9e/FLAG6a605ae09 [2021-01-26 17:34:29,405 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:34:29,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-01-26 17:34:29,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd16f0043/bc85422da7be478a82d3316785f57f9e/FLAG6a605ae09 [2021-01-26 17:34:29,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd16f0043/bc85422da7be478a82d3316785f57f9e [2021-01-26 17:34:29,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:34:29,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:34:29,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:34:29,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:34:29,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:34:29,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:34:29" (1/1) ... [2021-01-26 17:34:29,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@814906d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:29, skipping insertion in model container [2021-01-26 17:34:29,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:34:29" (1/1) ... [2021-01-26 17:34:29,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:34:29,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:34:30,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:34:30,156 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:34:30,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:34:30,341 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:34:30,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30 WrapperNode [2021-01-26 17:34:30,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:34:30,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:34:30,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:34:30,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:34:30,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:34:30,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:34:30,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:34:30,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:34:30,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (1/1) ... [2021-01-26 17:34:30,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:34:30,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:34:30,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:34:30,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:34:30,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (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 [2021-01-26 17:34:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:34:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:34:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:34:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:34:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:34:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:34:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:34:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:34:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:34:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:34:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:34:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:34:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:34:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:34:30,519 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:34:31,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:34:31,119 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:34:31,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:34:31 BoogieIcfgContainer [2021-01-26 17:34:31,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:34:31,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:34:31,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:34:31,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:34:31,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:34:29" (1/3) ... [2021-01-26 17:34:31,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5c3555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:34:31, skipping insertion in model container [2021-01-26 17:34:31,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:34:30" (2/3) ... [2021-01-26 17:34:31,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5c3555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:34:31, skipping insertion in model container [2021-01-26 17:34:31,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:34:31" (3/3) ... [2021-01-26 17:34:31,136 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-01-26 17:34:31,155 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:34:31,156 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:34:31,160 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:34:31,161 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:34:31,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,219 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,219 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,219 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,224 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,224 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,228 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:34:31,264 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:34:31,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 17:34:31,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:34:31,329 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:34:31,329 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:34:31,329 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:34:31,329 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:34:31,330 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:34:31,330 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:34:31,330 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:34:31,348 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-26 17:34:32,551 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9846 states, 9844 states have (on average 3.615197074360016) internal successors, (35588), 9845 states have internal predecessors, (35588), 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) [2021-01-26 17:34:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 9846 states, 9844 states have (on average 3.615197074360016) internal successors, (35588), 9845 states have internal predecessors, (35588), 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) [2021-01-26 17:34:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-26 17:34:32,644 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:32,645 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] [2021-01-26 17:34:32,646 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1260626285, now seen corresponding path program 1 times [2021-01-26 17:34:32,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:32,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011090615] [2021-01-26 17:34:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:33,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011090615] [2021-01-26 17:34:33,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:33,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:34:33,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855467536] [2021-01-26 17:34:33,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:34:33,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:33,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:34:33,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:34:33,230 INFO L87 Difference]: Start difference. First operand has 9846 states, 9844 states have (on average 3.615197074360016) internal successors, (35588), 9845 states have internal predecessors, (35588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-01-26 17:34:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:33,660 INFO L93 Difference]: Finished difference Result 13206 states and 46042 transitions. [2021-01-26 17:34:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:34:33,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2021-01-26 17:34:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:33,734 INFO L225 Difference]: With dead ends: 13206 [2021-01-26 17:34:33,734 INFO L226 Difference]: Without dead ends: 5051 [2021-01-26 17:34:33,736 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 [2021-01-26 17:34:33,737 INFO L78 Accepts]: Start accepts. Automaton has 5051 states. Word has length 40 [2021-01-26 17:34:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:33,739 INFO L481 AbstractCegarLoop]: Abstraction has 5051 states. [2021-01-26 17:34:33,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-01-26 17:34:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states. [2021-01-26 17:34:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-26 17:34:33,757 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:33,757 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] [2021-01-26 17:34:33,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:34:33,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash 2024610516, now seen corresponding path program 1 times [2021-01-26 17:34:33,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:33,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645657199] [2021-01-26 17:34:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:33,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645657199] [2021-01-26 17:34:33,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:33,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:34:33,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052447200] [2021-01-26 17:34:33,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:34:33,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:33,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:34:34,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:34:34,005 INFO L87 Difference]: Start difference. First operand 5051 states. 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) [2021-01-26 17:34:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:34,307 INFO L93 Difference]: Finished difference Result 6015 states and 20407 transitions. [2021-01-26 17:34:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:34:34,309 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 [2021-01-26 17:34:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:34,354 INFO L225 Difference]: With dead ends: 6015 [2021-01-26 17:34:34,354 INFO L226 Difference]: Without dead ends: 4811 [2021-01-26 17:34:34,355 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 [2021-01-26 17:34:34,356 INFO L78 Accepts]: Start accepts. Automaton has 4811 states. Word has length 42 [2021-01-26 17:34:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:34,357 INFO L481 AbstractCegarLoop]: Abstraction has 4811 states. [2021-01-26 17:34:34,357 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) [2021-01-26 17:34:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states. [2021-01-26 17:34:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-26 17:34:34,374 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:34,374 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] [2021-01-26 17:34:34,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:34:34,376 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:34,377 INFO L82 PathProgramCache]: Analyzing trace with hash 55793164, now seen corresponding path program 1 times [2021-01-26 17:34:34,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:34,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455382676] [2021-01-26 17:34:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:34,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455382676] [2021-01-26 17:34:34,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:34,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:34:34,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609703428] [2021-01-26 17:34:34,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:34:34,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:34,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:34:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:34:34,571 INFO L87 Difference]: Start difference. First operand 4811 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:34:34,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:34,799 INFO L93 Difference]: Finished difference Result 7887 states and 26373 transitions. [2021-01-26 17:34:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:34:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-26 17:34:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:34,848 INFO L225 Difference]: With dead ends: 7887 [2021-01-26 17:34:34,848 INFO L226 Difference]: Without dead ends: 5483 [2021-01-26 17:34:34,849 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 [2021-01-26 17:34:34,849 INFO L78 Accepts]: Start accepts. Automaton has 5483 states. Word has length 43 [2021-01-26 17:34:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:34,849 INFO L481 AbstractCegarLoop]: Abstraction has 5483 states. [2021-01-26 17:34:34,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:34:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states. [2021-01-26 17:34:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-26 17:34:34,864 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:34,865 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] [2021-01-26 17:34:34,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:34:34,865 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash -353221213, now seen corresponding path program 1 times [2021-01-26 17:34:34,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:34,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418299608] [2021-01-26 17:34:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:34,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418299608] [2021-01-26 17:34:34,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:34,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:34:34,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587869922] [2021-01-26 17:34:34,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:34:34,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:34:34,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:34:34,989 INFO L87 Difference]: Start difference. First operand 5483 states. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2021-01-26 17:34:35,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:35,219 INFO L93 Difference]: Finished difference Result 6599 states and 21708 transitions. [2021-01-26 17:34:35,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:34:35,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 [2021-01-26 17:34:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:35,246 INFO L225 Difference]: With dead ends: 6599 [2021-01-26 17:34:35,246 INFO L226 Difference]: Without dead ends: 5339 [2021-01-26 17:34:35,247 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 [2021-01-26 17:34:35,247 INFO L78 Accepts]: Start accepts. Automaton has 5339 states. Word has length 44 [2021-01-26 17:34:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:35,247 INFO L481 AbstractCegarLoop]: Abstraction has 5339 states. [2021-01-26 17:34:35,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2021-01-26 17:34:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states. [2021-01-26 17:34:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-26 17:34:35,263 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:35,263 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] [2021-01-26 17:34:35,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:34:35,264 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1494172039, now seen corresponding path program 1 times [2021-01-26 17:34:35,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:35,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579289155] [2021-01-26 17:34:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:35,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579289155] [2021-01-26 17:34:35,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:35,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:34:35,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608083570] [2021-01-26 17:34:35,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:34:35,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:35,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:34:35,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:34:35,393 INFO L87 Difference]: Start difference. First operand 5339 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) [2021-01-26 17:34:35,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:35,615 INFO L93 Difference]: Finished difference Result 9295 states and 30184 transitions. [2021-01-26 17:34:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:34:35,616 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 [2021-01-26 17:34:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:35,648 INFO L225 Difference]: With dead ends: 9295 [2021-01-26 17:34:35,648 INFO L226 Difference]: Without dead ends: 6459 [2021-01-26 17:34:35,648 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:34:35,649 INFO L78 Accepts]: Start accepts. Automaton has 6459 states. Word has length 45 [2021-01-26 17:34:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:35,649 INFO L481 AbstractCegarLoop]: Abstraction has 6459 states. [2021-01-26 17:34:35,650 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) [2021-01-26 17:34:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6459 states. [2021-01-26 17:34:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-26 17:34:35,665 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:35,666 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] [2021-01-26 17:34:35,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:34:35,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash -845125837, now seen corresponding path program 1 times [2021-01-26 17:34:35,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:35,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908538528] [2021-01-26 17:34:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:35,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908538528] [2021-01-26 17:34:35,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:35,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:34:35,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346678890] [2021-01-26 17:34:35,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:34:35,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:35,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:34:35,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:34:35,773 INFO L87 Difference]: Start difference. First operand 6459 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) [2021-01-26 17:34:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:36,054 INFO L93 Difference]: Finished difference Result 10799 states and 34283 transitions. [2021-01-26 17:34:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:34:36,055 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 [2021-01-26 17:34:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:36,088 INFO L225 Difference]: With dead ends: 10799 [2021-01-26 17:34:36,088 INFO L226 Difference]: Without dead ends: 7515 [2021-01-26 17:34:36,089 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 [2021-01-26 17:34:36,089 INFO L78 Accepts]: Start accepts. Automaton has 7515 states. Word has length 45 [2021-01-26 17:34:36,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:36,090 INFO L481 AbstractCegarLoop]: Abstraction has 7515 states. [2021-01-26 17:34:36,090 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) [2021-01-26 17:34:36,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states. [2021-01-26 17:34:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 17:34:36,102 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:36,102 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] [2021-01-26 17:34:36,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:34:36,102 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:36,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:36,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1287547266, now seen corresponding path program 1 times [2021-01-26 17:34:36,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:36,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916265696] [2021-01-26 17:34:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:36,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916265696] [2021-01-26 17:34:36,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:36,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:34:36,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486608847] [2021-01-26 17:34:36,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:34:36,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:36,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:34:36,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:34:36,214 INFO L87 Difference]: Start difference. First operand 7515 states. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:34:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:36,432 INFO L93 Difference]: Finished difference Result 6596 states and 20343 transitions. [2021-01-26 17:34:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:34:36,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-26 17:34:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:36,456 INFO L225 Difference]: With dead ends: 6596 [2021-01-26 17:34:36,457 INFO L226 Difference]: Without dead ends: 5478 [2021-01-26 17:34:36,457 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 [2021-01-26 17:34:36,457 INFO L78 Accepts]: Start accepts. Automaton has 5478 states. Word has length 46 [2021-01-26 17:34:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:36,458 INFO L481 AbstractCegarLoop]: Abstraction has 5478 states. [2021-01-26 17:34:36,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:34:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states. [2021-01-26 17:34:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-26 17:34:36,469 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:36,469 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] [2021-01-26 17:34:36,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:34:36,470 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:36,471 INFO L82 PathProgramCache]: Analyzing trace with hash -892640957, now seen corresponding path program 1 times [2021-01-26 17:34:36,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:36,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236036451] [2021-01-26 17:34:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:36,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236036451] [2021-01-26 17:34:36,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:36,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:34:36,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268582851] [2021-01-26 17:34:36,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:34:36,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:36,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:34:36,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:34:36,671 INFO L87 Difference]: Start difference. First operand 5478 states. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:34:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:36,873 INFO L93 Difference]: Finished difference Result 3147 states and 9266 transitions. [2021-01-26 17:34:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:34:36,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-26 17:34:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:36,882 INFO L225 Difference]: With dead ends: 3147 [2021-01-26 17:34:36,882 INFO L226 Difference]: Without dead ends: 2179 [2021-01-26 17:34:36,883 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 [2021-01-26 17:34:36,883 INFO L78 Accepts]: Start accepts. Automaton has 2179 states. Word has length 48 [2021-01-26 17:34:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:36,883 INFO L481 AbstractCegarLoop]: Abstraction has 2179 states. [2021-01-26 17:34:36,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 17:34:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states. [2021-01-26 17:34:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-26 17:34:36,889 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:34:36,890 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] [2021-01-26 17:34:36,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-26 17:34:36,890 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:34:36,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:34:36,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1960903364, now seen corresponding path program 1 times [2021-01-26 17:34:36,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:34:36,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333299082] [2021-01-26 17:34:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:34:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:34:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:34:37,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333299082] [2021-01-26 17:34:37,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:34:37,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:34:37,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463917004] [2021-01-26 17:34:37,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:34:37,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:34:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:34:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:34:37,019 INFO L87 Difference]: Start difference. First operand 2179 states. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-01-26 17:34:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:34:37,187 INFO L93 Difference]: Finished difference Result 1018 states and 2774 transitions. [2021-01-26 17:34:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-26 17:34:37,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2021-01-26 17:34:37,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:34:37,188 INFO L225 Difference]: With dead ends: 1018 [2021-01-26 17:34:37,188 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:34:37,190 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-26 17:34:37,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 50 [2021-01-26 17:34:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:34:37,194 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:34:37,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-01-26 17:34:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:34:37,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:34:37,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-26 17:34:37,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:34:37 BasicIcfg [2021-01-26 17:34:37,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:34:37,204 INFO L168 Benchmark]: Toolchain (without parser) took 7563.50 ms. Allocated memory was 302.0 MB in the beginning and 606.1 MB in the end (delta: 304.1 MB). Free memory was 277.1 MB in the beginning and 457.2 MB in the end (delta: -180.1 MB). Peak memory consumption was 126.7 MB. Max. memory is 16.0 GB. [2021-01-26 17:34:37,205 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:34:37,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.99 ms. Allocated memory is still 302.0 MB. Free memory was 276.2 MB in the beginning and 244.7 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-26 17:34:37,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.26 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 284.5 MB in the end (delta: -40.0 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-01-26 17:34:37,208 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 283.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:34:37,209 INFO L168 Benchmark]: RCFGBuilder took 691.57 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 260.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:34:37,210 INFO L168 Benchmark]: TraceAbstraction took 6074.99 ms. Allocated memory was 302.0 MB in the beginning and 606.1 MB in the end (delta: 304.1 MB). Free memory was 260.4 MB in the beginning and 457.2 MB in the end (delta: -196.8 MB). Peak memory consumption was 107.3 MB. Max. memory is 16.0 GB. [2021-01-26 17:34:37,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 688.99 ms. Allocated memory is still 302.0 MB. Free memory was 276.2 MB in the beginning and 244.7 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.26 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 284.5 MB in the end (delta: -40.0 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 302.0 MB. Free memory was 284.5 MB in the beginning and 283.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 691.57 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 260.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6074.99 ms. Allocated memory was 302.0 MB in the beginning and 606.1 MB in the end (delta: 304.1 MB). Free memory was 260.4 MB in the beginning and 457.2 MB in the end (delta: -196.8 MB). Peak memory consumption was 107.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 938 SDtfs, 1157 SDslu, 2787 SDs, 0 SdLazy, 279 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9846occurred 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, 1.0s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 394 ConstructedInterpolants, 0 QuantifiedInterpolants, 45448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...