/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:14:08,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:14:08,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:14:08,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:14:08,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:14:08,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:14:08,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:14:08,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:14:08,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:14:08,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:14:08,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:14:08,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:14:08,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:14:08,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:14:08,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:14:08,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:14:08,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:14:08,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:14:08,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:14:08,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:14:08,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:14:08,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:14:08,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:14:08,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:14:08,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:14:08,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:14:08,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:14:08,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:14:08,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:14:08,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:14:08,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:14:08,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:14:08,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:14:08,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:14:08,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:14:08,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:14:08,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2021-01-20 21:14:08,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:14:08,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:14:08,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:14:08,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:14:08,246 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:14:08,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:14:08,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:14:08,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:14:08,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:14:08,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:14:08,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:14:08,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:14:08,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:14:08,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:14:08,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:14:08,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:14:08,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:14:08,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:14:08,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:14:08,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:14:08,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:14:08,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:14:08,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:14:08,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:14:08,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:14:08,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:14:08,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:14:08,253 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:14:08,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:14:08,253 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:14:08,253 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:14:08,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:14:08,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:14:08,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:14:08,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:14:08,734 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:14:08,735 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:14:08,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-01-20 21:14:08,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94befbc02/96153b6532834d4d9c2a42a0563acad6/FLAGe583a7909 [2021-01-20 21:14:09,608 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:14:09,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-01-20 21:14:09,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94befbc02/96153b6532834d4d9c2a42a0563acad6/FLAGe583a7909 [2021-01-20 21:14:09,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94befbc02/96153b6532834d4d9c2a42a0563acad6 [2021-01-20 21:14:09,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:14:09,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:14:09,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:14:09,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:14:09,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:14:09,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:14:09" (1/1) ... [2021-01-20 21:14:09,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea9b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:09, skipping insertion in model container [2021-01-20 21:14:09,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:14:09" (1/1) ... [2021-01-20 21:14:09,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:14:09,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:14:10,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:14:10,368 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:14:10,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:14:10,546 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:14:10,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10 WrapperNode [2021-01-20 21:14:10,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:14:10,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:14:10,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:14:10,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:14:10,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:14:10,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:14:10,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:14:10,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:14:10,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... [2021-01-20 21:14:10,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:14:10,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:14:10,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:14:10,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:14:10,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:14:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:14:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:14:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:14:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:14:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:14:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:14:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:14:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:14:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:14:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:14:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:14:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:14:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:14:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:14:10,726 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 21:14:11,176 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:14:11,176 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:14:11,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:14:11 BoogieIcfgContainer [2021-01-20 21:14:11,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:14:11,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:14:11,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:14:11,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:14:11,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:14:09" (1/3) ... [2021-01-20 21:14:11,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac483f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:14:11, skipping insertion in model container [2021-01-20 21:14:11,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:14:10" (2/3) ... [2021-01-20 21:14:11,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac483f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:14:11, skipping insertion in model container [2021-01-20 21:14:11,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:14:11" (3/3) ... [2021-01-20 21:14:11,188 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-01-20 21:14:11,206 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:14:11,206 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:14:11,210 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:14:11,212 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:14:11,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,244 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,244 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,245 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,248 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,248 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,248 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,249 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,249 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,251 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,251 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,254 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,254 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,267 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,267 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:14:11,270 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:14:11,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:14:11,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:14:11,310 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:14:11,310 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:14:11,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:14:11,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:14:11,311 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:14:11,311 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:14:11,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:14:11,324 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 21:14:12,398 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:12,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 21:14:12,512 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:12,513 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] [2021-01-20 21:14:12,514 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2021-01-20 21:14:12,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:12,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054998354] [2021-01-20 21:14:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:13,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054998354] [2021-01-20 21:14:13,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:13,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:13,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57931372] [2021-01-20 21:14:13,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:13,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:13,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:13,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:13,088 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:13,603 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2021-01-20 21:14:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:13,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-20 21:14:13,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:13,608 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:13,608 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 42463 transitions. Word has length 41 [2021-01-20 21:14:13,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:13,610 INFO L481 AbstractCegarLoop]: Abstraction has 12199 states and 42463 transitions. [2021-01-20 21:14:13,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 42463 transitions. [2021-01-20 21:14:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 21:14:13,629 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:13,629 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] [2021-01-20 21:14:13,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:14:13,630 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:13,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1918466709, now seen corresponding path program 1 times [2021-01-20 21:14:13,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:13,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122946254] [2021-01-20 21:14:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:13,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122946254] [2021-01-20 21:14:13,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:13,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:13,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518331149] [2021-01-20 21:14:13,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:13,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:13,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:13,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:13,777 INFO L87 Difference]: Start difference. First operand 12199 states and 42463 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:14,360 INFO L93 Difference]: Finished difference Result 14747 states and 51045 transitions. [2021-01-20 21:14:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:14,361 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 [2021-01-20 21:14:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:14,362 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:14,362 INFO L78 Accepts]: Start accepts. Automaton has 14747 states and 51045 transitions. Word has length 43 [2021-01-20 21:14:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:14,363 INFO L481 AbstractCegarLoop]: Abstraction has 14747 states and 51045 transitions. [2021-01-20 21:14:14,363 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) [2021-01-20 21:14:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 14747 states and 51045 transitions. [2021-01-20 21:14:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 21:14:14,383 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:14,384 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] [2021-01-20 21:14:14,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:14:14,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash -795070177, now seen corresponding path program 1 times [2021-01-20 21:14:14,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:14,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506682953] [2021-01-20 21:14:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:14,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506682953] [2021-01-20 21:14:14,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:14,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:14,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696152744] [2021-01-20 21:14:14,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:14,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:14,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:14,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:14,519 INFO L87 Difference]: Start difference. First operand 14747 states and 51045 transitions. 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) [2021-01-20 21:14:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:15,002 INFO L93 Difference]: Finished difference Result 22363 states and 76879 transitions. [2021-01-20 21:14:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:15,003 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 [2021-01-20 21:14:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:15,004 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:15,004 INFO L78 Accepts]: Start accepts. Automaton has 22363 states and 76879 transitions. Word has length 44 [2021-01-20 21:14:15,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:15,005 INFO L481 AbstractCegarLoop]: Abstraction has 22363 states and 76879 transitions. [2021-01-20 21:14:15,005 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) [2021-01-20 21:14:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 22363 states and 76879 transitions. [2021-01-20 21:14:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 21:14:15,040 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:15,040 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] [2021-01-20 21:14:15,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:14:15,041 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:15,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:15,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2081473022, now seen corresponding path program 1 times [2021-01-20 21:14:15,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:15,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067875419] [2021-01-20 21:14:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:15,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067875419] [2021-01-20 21:14:15,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:15,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:15,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722930582] [2021-01-20 21:14:15,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:15,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:15,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:15,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:15,171 INFO L87 Difference]: Start difference. First operand 22363 states and 76879 transitions. 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) [2021-01-20 21:14:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:15,837 INFO L93 Difference]: Finished difference Result 37563 states and 128367 transitions. [2021-01-20 21:14:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:15,838 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 [2021-01-20 21:14:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:15,839 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:15,839 INFO L78 Accepts]: Start accepts. Automaton has 37563 states and 128367 transitions. Word has length 46 [2021-01-20 21:14:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:15,840 INFO L481 AbstractCegarLoop]: Abstraction has 37563 states and 128367 transitions. [2021-01-20 21:14:15,840 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) [2021-01-20 21:14:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 37563 states and 128367 transitions. [2021-01-20 21:14:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:14:15,914 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:15,914 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:14:15,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:14:15,915 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:15,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:15,916 INFO L82 PathProgramCache]: Analyzing trace with hash -306051688, now seen corresponding path program 1 times [2021-01-20 21:14:15,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:15,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164691010] [2021-01-20 21:14:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:16,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164691010] [2021-01-20 21:14:16,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:16,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:16,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004773583] [2021-01-20 21:14:16,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:16,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:16,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:16,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:16,059 INFO L87 Difference]: Start difference. First operand 37563 states and 128367 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:16,832 INFO L93 Difference]: Finished difference Result 61275 states and 206511 transitions. [2021-01-20 21:14:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:14:16,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 21:14:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:16,845 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:16,851 INFO L78 Accepts]: Start accepts. Automaton has 61275 states and 206511 transitions. Word has length 47 [2021-01-20 21:14:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:16,854 INFO L481 AbstractCegarLoop]: Abstraction has 61275 states and 206511 transitions. [2021-01-20 21:14:16,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 61275 states and 206511 transitions. [2021-01-20 21:14:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:14:16,965 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:16,965 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] [2021-01-20 21:14:16,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:14:16,965 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:16,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:16,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1816760195, now seen corresponding path program 1 times [2021-01-20 21:14:16,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:16,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81915350] [2021-01-20 21:14:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:17,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81915350] [2021-01-20 21:14:17,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:17,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:14:17,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913077291] [2021-01-20 21:14:17,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:14:17,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:17,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:14:17,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:14:17,088 INFO L87 Difference]: Start difference. First operand 61275 states and 206511 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-01-20 21:14:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:17,630 INFO L93 Difference]: Finished difference Result 34272 states and 112311 transitions. [2021-01-20 21:14:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:14:17,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 [2021-01-20 21:14:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:17,638 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:17,638 INFO L78 Accepts]: Start accepts. Automaton has 34272 states and 112311 transitions. Word has length 48 [2021-01-20 21:14:17,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:17,639 INFO L481 AbstractCegarLoop]: Abstraction has 34272 states and 112311 transitions. [2021-01-20 21:14:17,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-01-20 21:14:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 34272 states and 112311 transitions. [2021-01-20 21:14:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:14:17,712 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:17,712 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:14:17,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:14:17,721 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1635595998, now seen corresponding path program 1 times [2021-01-20 21:14:17,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:17,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304083293] [2021-01-20 21:14:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:17,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304083293] [2021-01-20 21:14:17,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:17,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:14:17,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121881663] [2021-01-20 21:14:17,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:14:17,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:17,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:14:17,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:14:17,911 INFO L87 Difference]: Start difference. First operand 34272 states and 112311 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:18,241 INFO L93 Difference]: Finished difference Result 14643 states and 46746 transitions. [2021-01-20 21:14:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:14:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 21:14:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:18,243 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:14:18,243 INFO L78 Accepts]: Start accepts. Automaton has 14643 states and 46746 transitions. Word has length 49 [2021-01-20 21:14:18,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:18,244 INFO L481 AbstractCegarLoop]: Abstraction has 14643 states and 46746 transitions. [2021-01-20 21:14:18,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:18,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14643 states and 46746 transitions. [2021-01-20 21:14:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 21:14:18,264 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:18,264 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:14:18,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:14:18,264 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:18,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1738964541, now seen corresponding path program 1 times [2021-01-20 21:14:18,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:18,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815518171] [2021-01-20 21:14:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:18,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815518171] [2021-01-20 21:14:18,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:18,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:14:18,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981392034] [2021-01-20 21:14:18,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:14:18,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:14:18,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:14:18,445 INFO L87 Difference]: Start difference. First operand 14643 states and 46746 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:19,031 INFO L93 Difference]: Finished difference Result 7992 states and 25638 transitions. [2021-01-20 21:14:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:14:19,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-20 21:14:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:19,033 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:14:19,033 INFO L78 Accepts]: Start accepts. Automaton has 7992 states and 25638 transitions. Word has length 51 [2021-01-20 21:14:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:19,034 INFO L481 AbstractCegarLoop]: Abstraction has 7992 states and 25638 transitions. [2021-01-20 21:14:19,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7992 states and 25638 transitions. [2021-01-20 21:14:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 21:14:19,051 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:19,051 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:14:19,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:14:19,052 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -889143118, now seen corresponding path program 1 times [2021-01-20 21:14:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:19,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756216445] [2021-01-20 21:14:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:19,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756216445] [2021-01-20 21:14:19,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:19,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:14:19,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074738879] [2021-01-20 21:14:19,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:14:19,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:19,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:14:19,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:14:19,202 INFO L87 Difference]: Start difference. First operand 7992 states and 25638 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:19,371 INFO L93 Difference]: Finished difference Result 11898 states and 37570 transitions. [2021-01-20 21:14:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:14:19,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-01-20 21:14:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:19,373 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:19,373 INFO L78 Accepts]: Start accepts. Automaton has 11898 states and 37570 transitions. Word has length 53 [2021-01-20 21:14:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:19,373 INFO L481 AbstractCegarLoop]: Abstraction has 11898 states and 37570 transitions. [2021-01-20 21:14:19,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:19,374 INFO L276 IsEmpty]: Start isEmpty. Operand 11898 states and 37570 transitions. [2021-01-20 21:14:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 21:14:19,393 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:19,393 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:14:19,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 21:14:19,393 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:19,394 INFO L82 PathProgramCache]: Analyzing trace with hash 388446026, now seen corresponding path program 2 times [2021-01-20 21:14:19,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:19,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512063490] [2021-01-20 21:14:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:19,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512063490] [2021-01-20 21:14:19,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:19,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:14:19,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677654730] [2021-01-20 21:14:19,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:14:19,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:19,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:14:19,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:14:19,564 INFO L87 Difference]: Start difference. First operand 11898 states and 37570 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:19,868 INFO L93 Difference]: Finished difference Result 16413 states and 51529 transitions. [2021-01-20 21:14:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 21:14:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-01-20 21:14:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:19,869 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:19,870 INFO L78 Accepts]: Start accepts. Automaton has 16413 states and 51529 transitions. Word has length 53 [2021-01-20 21:14:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:19,870 INFO L481 AbstractCegarLoop]: Abstraction has 16413 states and 51529 transitions. [2021-01-20 21:14:19,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 16413 states and 51529 transitions. [2021-01-20 21:14:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 21:14:19,892 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:14:19,892 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 21:14:19,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 21:14:19,893 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:14:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:14:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1880557810, now seen corresponding path program 3 times [2021-01-20 21:14:19,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:14:19,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098343507] [2021-01-20 21:14:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:14:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:14:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 21:14:19,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098343507] [2021-01-20 21:14:19,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:14:19,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:14:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469151668] [2021-01-20 21:14:19,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:14:19,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:14:19,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:14:19,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:14:19,992 INFO L87 Difference]: Start difference. First operand 16413 states and 51529 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:14:20,348 INFO L93 Difference]: Finished difference Result 26898 states and 83998 transitions. [2021-01-20 21:14:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:14:20,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-01-20 21:14:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:14:20,349 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:14:20,349 INFO L78 Accepts]: Start accepts. Automaton has 26898 states and 83998 transitions. Word has length 53 [2021-01-20 21:14:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:14:20,350 INFO L481 AbstractCegarLoop]: Abstraction has 26898 states and 83998 transitions. [2021-01-20 21:14:20,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:14:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 26898 states and 83998 transitions. [2021-01-20 21:14:20,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:14:20,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-20 21:14:20,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:14:20 BasicIcfg [2021-01-20 21:14:20,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:14:20,427 INFO L168 Benchmark]: Toolchain (without parser) took 10583.10 ms. Allocated memory was 302.0 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 276.9 MB in the beginning and 2.8 GB in the end (delta: -2.5 GB). Peak memory consumption was 556.3 MB. Max. memory is 16.0 GB. [2021-01-20 21:14:20,427 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:14:20,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.31 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.9 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 21:14:20,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.96 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 284.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-01-20 21:14:20,439 INFO L168 Benchmark]: Boogie Preprocessor took 32.01 ms. Allocated memory is still 302.0 MB. Free memory was 284.4 MB in the beginning and 282.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:14:20,440 INFO L168 Benchmark]: RCFGBuilder took 535.15 ms. Allocated memory is still 302.0 MB. Free memory was 282.3 MB in the beginning and 260.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:14:20,444 INFO L168 Benchmark]: TraceAbstraction took 9242.96 ms. Allocated memory was 302.0 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 259.2 MB in the beginning and 2.8 GB in the end (delta: -2.5 GB). Peak memory consumption was 537.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:14:20,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 703.31 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.9 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.96 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 284.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.01 ms. Allocated memory is still 302.0 MB. Free memory was 284.4 MB in the beginning and 282.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 535.15 ms. Allocated memory is still 302.0 MB. Free memory was 282.3 MB in the beginning and 260.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9242.96 ms. Allocated memory was 302.0 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 259.2 MB in the beginning and 2.8 GB in the end (delta: -2.5 GB). Peak memory consumption was 537.1 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 1295 SDtfs, 2011 SDslu, 4373 SDs, 0 SdLazy, 493 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61275occurred in iteration=5, 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, 1.3s InterpolantComputationTime, 528 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 63591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...