/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 15:45:55,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 15:45:55,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 15:45:55,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 15:45:55,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 15:45:55,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 15:45:55,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 15:45:55,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 15:45:55,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 15:45:55,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 15:45:55,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 15:45:55,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 15:45:55,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 15:45:55,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 15:45:55,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 15:45:55,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 15:45:55,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 15:45:55,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 15:45:55,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 15:45:55,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 15:45:55,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 15:45:55,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 15:45:55,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 15:45:55,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 15:45:55,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 15:45:55,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 15:45:55,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 15:45:55,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 15:45:55,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 15:45:55,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-06-16 15:45:55,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 15:45:55,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 15:45:55,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 15:45:55,225 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-Delay.epf [2021-06-16 15:45:55,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 15:45:55,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 15:45:55,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 15:45:55,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 15:45:55,267 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 15:45:55,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 15:45:55,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 15:45:55,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 15:45:55,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 15:45:55,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 15:45:55,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 15:45:55,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 15:45:55,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 15:45:55,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 15:45:55,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 15:45:55,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 15:45:55,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 15:45:55,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 15:45:55,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 15:45:55,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 15:45:55,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 15:45:55,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 15:45:55,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 15:45:55,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 15:45:55,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 15:45:55,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 15:45:55,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 15:45:55,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 15:45:55,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 15:45:55,271 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 15:45:55,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 15:45:55,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 15:45:55,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 15:45:55,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 15:45:55,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 15:45:55,566 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 15:45:55,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-06-16 15:45:55,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5774d9df8/1e871ee5bbb4410784e68b904df4ecc9/FLAGe51f5141a [2021-06-16 15:45:56,028 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 15:45:56,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-06-16 15:45:56,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5774d9df8/1e871ee5bbb4410784e68b904df4ecc9/FLAGe51f5141a [2021-06-16 15:45:56,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5774d9df8/1e871ee5bbb4410784e68b904df4ecc9 [2021-06-16 15:45:56,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 15:45:56,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 15:45:56,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 15:45:56,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 15:45:56,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 15:45:56,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357fc206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56, skipping insertion in model container [2021-06-16 15:45:56,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 15:45:56,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 15:45:56,538 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i[949,962] [2021-06-16 15:45:56,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:45:56,643 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 15:45:56,654 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i[949,962] [2021-06-16 15:45:56,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:45:56,760 INFO L208 MainTranslator]: Completed translation [2021-06-16 15:45:56,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56 WrapperNode [2021-06-16 15:45:56,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 15:45:56,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 15:45:56,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 15:45:56,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 15:45:56,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 15:45:56,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 15:45:56,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 15:45:56,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 15:45:56,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (1/1) ... [2021-06-16 15:45:56,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 15:45:56,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 15:45:56,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 15:45:56,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 15:45:56,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (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 [2021-06-16 15:45:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-16 15:45:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-16 15:45:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-16 15:45:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 15:45:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 15:45:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 15:45:56,980 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 15:45:57,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 15:45:57,203 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-16 15:45:57,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:45:57 BoogieIcfgContainer [2021-06-16 15:45:57,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 15:45:57,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 15:45:57,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 15:45:57,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 15:45:57,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 03:45:56" (1/3) ... [2021-06-16 15:45:57,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d59c311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:45:57, skipping insertion in model container [2021-06-16 15:45:57,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:45:56" (2/3) ... [2021-06-16 15:45:57,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d59c311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:45:57, skipping insertion in model container [2021-06-16 15:45:57,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:45:57" (3/3) ... [2021-06-16 15:45:57,210 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2021-06-16 15:45:57,213 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 15:45:57,214 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 15:45:57,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 15:45:57,214 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 15:45:57,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,237 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,238 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,238 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,239 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,244 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,244 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:45:57,251 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-16 15:45:57,265 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 15:45:57,278 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 15:45:57,278 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 15:45:57,278 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 15:45:57,278 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 15:45:57,278 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 15:45:57,278 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 15:45:57,279 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 15:45:57,279 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 15:45:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 8010 states have (on average 2.3504369538077405) internal successors, (18827), 9331 states have internal predecessors, (18827), 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) [2021-06-16 15:45:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-16 15:45:58,043 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:58,044 INFO L472 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] [2021-06-16 15:45:58,044 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:58,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-06-16 15:45:58,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:58,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671346976] [2021-06-16 15:45:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:58,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:58,293 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:45:58,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:45:58,306 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:45:58,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:45:58,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:58,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:58,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:58,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:58,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671346976] [2021-06-16 15:45:58,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671346976] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:58,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:58,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:45:58,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211059976] [2021-06-16 15:45:58,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:45:58,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:58,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:45:58,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:45:58,363 INFO L87 Difference]: Start difference. First operand has 9332 states, 8010 states have (on average 2.3504369538077405) internal successors, (18827), 9331 states have internal predecessors, (18827), 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 8.166666666666666) internal successors, (49), 6 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) [2021-06-16 15:45:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:45:58,626 INFO L93 Difference]: Finished difference Result 20748 states and 43077 transitions. [2021-06-16 15:45:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:45:58,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 [2021-06-16 15:45:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:45:58,650 INFO L225 Difference]: With dead ends: 20748 [2021-06-16 15:45:58,650 INFO L226 Difference]: Without dead ends: 3401 [2021-06-16 15:45:58,651 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:45:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2021-06-16 15:45:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 2412. [2021-06-16 15:45:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2377 states have (on average 2.260832982751367) internal successors, (5374), 2411 states have internal predecessors, (5374), 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) [2021-06-16 15:45:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 5374 transitions. [2021-06-16 15:45:58,738 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 5374 transitions. Word has length 49 [2021-06-16 15:45:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:45:58,738 INFO L482 AbstractCegarLoop]: Abstraction has 2412 states and 5374 transitions. [2021-06-16 15:45:58,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-06-16 15:45:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 5374 transitions. [2021-06-16 15:45:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-16 15:45:58,741 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:58,741 INFO L472 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] [2021-06-16 15:45:58,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 15:45:58,742 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:58,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1080758819, now seen corresponding path program 1 times [2021-06-16 15:45:58,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:58,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063799178] [2021-06-16 15:45:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:58,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:58,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:58,797 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:45:58,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:45:58,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:58,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:58,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:58,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:58,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063799178] [2021-06-16 15:45:58,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063799178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:58,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:58,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:45:58,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624228191] [2021-06-16 15:45:58,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:45:58,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:58,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:45:58,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:45:58,825 INFO L87 Difference]: Start difference. First operand 2412 states and 5374 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-06-16 15:45:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:45:58,900 INFO L93 Difference]: Finished difference Result 2692 states and 6273 transitions. [2021-06-16 15:45:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:45:58,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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 [2021-06-16 15:45:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:45:58,906 INFO L225 Difference]: With dead ends: 2692 [2021-06-16 15:45:58,906 INFO L226 Difference]: Without dead ends: 1712 [2021-06-16 15:45:58,907 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:45:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2021-06-16 15:45:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1676. [2021-06-16 15:45:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1641 states have (on average 2.392443631931749) internal successors, (3926), 1675 states have internal predecessors, (3926), 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) [2021-06-16 15:45:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3926 transitions. [2021-06-16 15:45:58,951 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3926 transitions. Word has length 51 [2021-06-16 15:45:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:45:58,951 INFO L482 AbstractCegarLoop]: Abstraction has 1676 states and 3926 transitions. [2021-06-16 15:45:58,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-06-16 15:45:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3926 transitions. [2021-06-16 15:45:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 15:45:58,954 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:58,954 INFO L472 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] [2021-06-16 15:45:58,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 15:45:58,954 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:58,955 INFO L82 PathProgramCache]: Analyzing trace with hash -466408940, now seen corresponding path program 1 times [2021-06-16 15:45:58,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:58,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83570503] [2021-06-16 15:45:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:58,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:58,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:58,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:58,998 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:45:58,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:45:59,006 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:45:59,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:45:59,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:59,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:59,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83570503] [2021-06-16 15:45:59,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83570503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:59,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:59,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:45:59,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834401431] [2021-06-16 15:45:59,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:45:59,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:59,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:45:59,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:45:59,034 INFO L87 Difference]: Start difference. First operand 1676 states and 3926 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) [2021-06-16 15:45:59,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:45:59,166 INFO L93 Difference]: Finished difference Result 2390 states and 5764 transitions. [2021-06-16 15:45:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:45:59,167 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 [2021-06-16 15:45:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:45:59,172 INFO L225 Difference]: With dead ends: 2390 [2021-06-16 15:45:59,172 INFO L226 Difference]: Without dead ends: 1628 [2021-06-16 15:45:59,172 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:45:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-06-16 15:45:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1331. [2021-06-16 15:45:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1296 states have (on average 2.2430555555555554) internal successors, (2907), 1330 states have internal predecessors, (2907), 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) [2021-06-16 15:45:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2907 transitions. [2021-06-16 15:45:59,193 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2907 transitions. Word has length 53 [2021-06-16 15:45:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:45:59,194 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 2907 transitions. [2021-06-16 15:45:59,194 INFO L483 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) [2021-06-16 15:45:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2907 transitions. [2021-06-16 15:45:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-16 15:45:59,195 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:59,195 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:45:59,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 15:45:59,196 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:59,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1749288200, now seen corresponding path program 1 times [2021-06-16 15:45:59,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:59,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426867883] [2021-06-16 15:45:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:59,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,238 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:45:59,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:45:59,246 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:45:59,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:45:59,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:59,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:59,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426867883] [2021-06-16 15:45:59,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426867883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:59,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:59,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:45:59,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83036910] [2021-06-16 15:45:59,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:45:59,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:59,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:45:59,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:45:59,275 INFO L87 Difference]: Start difference. First operand 1331 states and 2907 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:45:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:45:59,357 INFO L93 Difference]: Finished difference Result 2225 states and 5144 transitions. [2021-06-16 15:45:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 15:45:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-16 15:45:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:45:59,362 INFO L225 Difference]: With dead ends: 2225 [2021-06-16 15:45:59,363 INFO L226 Difference]: Without dead ends: 1459 [2021-06-16 15:45:59,363 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 75.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-16 15:45:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-06-16 15:45:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1235. [2021-06-16 15:45:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1203 states have (on average 2.2443890274314215) internal successors, (2700), 1234 states have internal predecessors, (2700), 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) [2021-06-16 15:45:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 2700 transitions. [2021-06-16 15:45:59,385 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 2700 transitions. Word has length 54 [2021-06-16 15:45:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:45:59,386 INFO L482 AbstractCegarLoop]: Abstraction has 1235 states and 2700 transitions. [2021-06-16 15:45:59,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:45:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 2700 transitions. [2021-06-16 15:45:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-16 15:45:59,387 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:59,388 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:45:59,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 15:45:59,388 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:59,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:59,388 INFO L82 PathProgramCache]: Analyzing trace with hash 45735624, now seen corresponding path program 1 times [2021-06-16 15:45:59,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:59,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592755009] [2021-06-16 15:45:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:59,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,424 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:45:59,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:45:59,433 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:45:59,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:45:59,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:59,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:59,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592755009] [2021-06-16 15:45:59,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592755009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:59,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:59,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:45:59,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202217546] [2021-06-16 15:45:59,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:45:59,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:45:59,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:45:59,465 INFO L87 Difference]: Start difference. First operand 1235 states and 2700 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-06-16 15:45:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:45:59,602 INFO L93 Difference]: Finished difference Result 2393 states and 5653 transitions. [2021-06-16 15:45:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:45:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2021-06-16 15:45:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:45:59,607 INFO L225 Difference]: With dead ends: 2393 [2021-06-16 15:45:59,607 INFO L226 Difference]: Without dead ends: 1247 [2021-06-16 15:45:59,608 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-06-16 15:45:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-06-16 15:45:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 825. [2021-06-16 15:45:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 805 states have (on average 2.2919254658385095) internal successors, (1845), 824 states have internal predecessors, (1845), 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) [2021-06-16 15:45:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1845 transitions. [2021-06-16 15:45:59,625 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1845 transitions. Word has length 55 [2021-06-16 15:45:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:45:59,626 INFO L482 AbstractCegarLoop]: Abstraction has 825 states and 1845 transitions. [2021-06-16 15:45:59,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-06-16 15:45:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1845 transitions. [2021-06-16 15:45:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-16 15:45:59,627 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:59,627 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:45:59,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 15:45:59,627 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash 299901549, now seen corresponding path program 1 times [2021-06-16 15:45:59,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:59,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185408906] [2021-06-16 15:45:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:59,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,668 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:45:59,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:45:59,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:59,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:59,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185408906] [2021-06-16 15:45:59,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185408906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:59,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:59,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:45:59,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379989042] [2021-06-16 15:45:59,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:45:59,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:59,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:45:59,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:45:59,698 INFO L87 Difference]: Start difference. First operand 825 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-16 15:45:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:45:59,757 INFO L93 Difference]: Finished difference Result 1327 states and 3108 transitions. [2021-06-16 15:45:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 15:45:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-06-16 15:45:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:45:59,760 INFO L225 Difference]: With dead ends: 1327 [2021-06-16 15:45:59,760 INFO L226 Difference]: Without dead ends: 805 [2021-06-16 15:45:59,761 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:45:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-06-16 15:45:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2021-06-16 15:45:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 785 states have (on average 2.3095541401273887) internal successors, (1813), 804 states have internal predecessors, (1813), 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) [2021-06-16 15:45:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1813 transitions. [2021-06-16 15:45:59,776 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1813 transitions. Word has length 57 [2021-06-16 15:45:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:45:59,776 INFO L482 AbstractCegarLoop]: Abstraction has 805 states and 1813 transitions. [2021-06-16 15:45:59,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-16 15:45:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1813 transitions. [2021-06-16 15:45:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-16 15:45:59,778 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:59,778 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:45:59,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 15:45:59,778 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:59,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:59,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1485588445, now seen corresponding path program 2 times [2021-06-16 15:45:59,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:59,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288425598] [2021-06-16 15:45:59,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:59,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,815 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:45:59,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:45:59,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:45:59,832 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:45:59,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:59,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:59,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288425598] [2021-06-16 15:45:59,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288425598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:59,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:59,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:45:59,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029673480] [2021-06-16 15:45:59,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:45:59,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:45:59,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:45:59,840 INFO L87 Difference]: Start difference. First operand 805 states and 1813 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-06-16 15:45:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:45:59,913 INFO L93 Difference]: Finished difference Result 1028 states and 2285 transitions. [2021-06-16 15:45:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:45:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-06-16 15:45:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:45:59,915 INFO L225 Difference]: With dead ends: 1028 [2021-06-16 15:45:59,915 INFO L226 Difference]: Without dead ends: 728 [2021-06-16 15:45:59,916 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:45:59,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-06-16 15:45:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-06-16 15:45:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 708 states have (on average 2.309322033898305) internal successors, (1635), 727 states have internal predecessors, (1635), 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) [2021-06-16 15:45:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1635 transitions. [2021-06-16 15:45:59,927 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1635 transitions. Word has length 57 [2021-06-16 15:45:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:45:59,927 INFO L482 AbstractCegarLoop]: Abstraction has 728 states and 1635 transitions. [2021-06-16 15:45:59,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-06-16 15:45:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1635 transitions. [2021-06-16 15:45:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-16 15:45:59,928 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:45:59,929 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:45:59,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 15:45:59,929 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:45:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:45:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash -388676562, now seen corresponding path program 1 times [2021-06-16 15:45:59,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:45:59,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932134579] [2021-06-16 15:45:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:45:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:45:59,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:45:59,962 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:45:59,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:45:59,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:45:59,979 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:45:59,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:45:59,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:45:59,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:45:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:45:59,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:45:59,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932134579] [2021-06-16 15:45:59,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932134579] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:45:59,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:45:59,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:45:59,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162014630] [2021-06-16 15:45:59,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:45:59,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:45:59,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:45:59,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:45:59,993 INFO L87 Difference]: Start difference. First operand 728 states and 1635 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-16 15:46:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:00,079 INFO L93 Difference]: Finished difference Result 731 states and 1568 transitions. [2021-06-16 15:46:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:46:00,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-06-16 15:46:00,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:00,081 INFO L225 Difference]: With dead ends: 731 [2021-06-16 15:46:00,081 INFO L226 Difference]: Without dead ends: 481 [2021-06-16 15:46:00,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:46:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-06-16 15:46:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2021-06-16 15:46:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 463 states have (on average 2.1706263498920086) internal successors, (1005), 480 states have internal predecessors, (1005), 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) [2021-06-16 15:46:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1005 transitions. [2021-06-16 15:46:00,089 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1005 transitions. Word has length 58 [2021-06-16 15:46:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:00,089 INFO L482 AbstractCegarLoop]: Abstraction has 481 states and 1005 transitions. [2021-06-16 15:46:00,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-16 15:46:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1005 transitions. [2021-06-16 15:46:00,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-16 15:46:00,090 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:00,090 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:46:00,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 15:46:00,090 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:00,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:00,091 INFO L82 PathProgramCache]: Analyzing trace with hash -121762603, now seen corresponding path program 1 times [2021-06-16 15:46:00,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:00,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688159036] [2021-06-16 15:46:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:00,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:00,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:00,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:00,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:00,133 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:46:00,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:46:00,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:46:00,151 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:46:00,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:00,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:00,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:00,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688159036] [2021-06-16 15:46:00,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688159036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:00,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:00,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:46:00,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903253337] [2021-06-16 15:46:00,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:46:00,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:46:00,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:46:00,160 INFO L87 Difference]: Start difference. First operand 481 states and 1005 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-06-16 15:46:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:00,258 INFO L93 Difference]: Finished difference Result 373 states and 691 transitions. [2021-06-16 15:46:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 15:46:00,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-06-16 15:46:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:00,259 INFO L225 Difference]: With dead ends: 373 [2021-06-16 15:46:00,259 INFO L226 Difference]: Without dead ends: 256 [2021-06-16 15:46:00,259 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:46:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-06-16 15:46:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 252. [2021-06-16 15:46:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 243 states have (on average 1.6954732510288066) internal successors, (412), 251 states have internal predecessors, (412), 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) [2021-06-16 15:46:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 412 transitions. [2021-06-16 15:46:00,263 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 412 transitions. Word has length 59 [2021-06-16 15:46:00,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:00,263 INFO L482 AbstractCegarLoop]: Abstraction has 252 states and 412 transitions. [2021-06-16 15:46:00,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-06-16 15:46:00,263 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 412 transitions. [2021-06-16 15:46:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-16 15:46:00,264 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:00,264 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:46:00,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-16 15:46:00,264 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:00,264 INFO L82 PathProgramCache]: Analyzing trace with hash -127924010, now seen corresponding path program 1 times [2021-06-16 15:46:00,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:00,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490290747] [2021-06-16 15:46:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:00,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:00,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:00,292 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:46:00,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:46:00,299 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:46:00,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:46:00,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:00,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:00,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:00,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:00,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:00,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490290747] [2021-06-16 15:46:00,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490290747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:00,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:00,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:46:00,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865379386] [2021-06-16 15:46:00,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:46:00,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:00,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:46:00,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:46:00,327 INFO L87 Difference]: Start difference. First operand 252 states and 412 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-06-16 15:46:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:00,400 INFO L93 Difference]: Finished difference Result 220 states and 359 transitions. [2021-06-16 15:46:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 15:46:00,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-06-16 15:46:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:00,400 INFO L225 Difference]: With dead ends: 220 [2021-06-16 15:46:00,401 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 15:46:00,401 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:46:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 15:46:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 15:46:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:46:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 15:46:00,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-16 15:46:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:00,401 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 15:46:00,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-06-16 15:46:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 15:46:00,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 15:46:00,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-16 15:46:00,403 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 15:46:00,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 03:46:00 BasicIcfg [2021-06-16 15:46:00,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 15:46:00,405 INFO L168 Benchmark]: Toolchain (without parser) took 4042.25 ms. Allocated memory was 186.6 MB in the beginning and 378.5 MB in the end (delta: 191.9 MB). Free memory was 149.9 MB in the beginning and 245.0 MB in the end (delta: -95.1 MB). Peak memory consumption was 97.2 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:00,405 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 186.6 MB. Free memory is still 168.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 15:46:00,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.87 ms. Allocated memory is still 186.6 MB. Free memory was 149.7 MB in the beginning and 149.8 MB in the end (delta: -125.2 kB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:00,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.88 ms. Allocated memory is still 186.6 MB. Free memory was 149.8 MB in the beginning and 147.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:00,406 INFO L168 Benchmark]: Boogie Preprocessor took 31.66 ms. Allocated memory is still 186.6 MB. Free memory was 147.7 MB in the beginning and 146.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:00,406 INFO L168 Benchmark]: RCFGBuilder took 364.56 ms. Allocated memory is still 186.6 MB. Free memory was 146.7 MB in the beginning and 122.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:00,406 INFO L168 Benchmark]: TraceAbstraction took 3198.53 ms. Allocated memory was 186.6 MB in the beginning and 378.5 MB in the end (delta: 191.9 MB). Free memory was 122.0 MB in the beginning and 245.0 MB in the end (delta: -122.9 MB). Peak memory consumption was 69.5 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:00,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 186.6 MB. Free memory is still 168.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 395.87 ms. Allocated memory is still 186.6 MB. Free memory was 149.7 MB in the beginning and 149.8 MB in the end (delta: -125.2 kB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.88 ms. Allocated memory is still 186.6 MB. Free memory was 149.8 MB in the beginning and 147.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.66 ms. Allocated memory is still 186.6 MB. Free memory was 147.7 MB in the beginning and 146.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 364.56 ms. Allocated memory is still 186.6 MB. Free memory was 146.7 MB in the beginning and 122.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3198.53 ms. Allocated memory was 186.6 MB in the beginning and 378.5 MB in the end (delta: 191.9 MB). Free memory was 122.0 MB in the beginning and 245.0 MB in the end (delta: -122.9 MB). Peak memory consumption was 69.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 34152, positive: 32435, positive conditional: 32435, positive unconditional: 0, negative: 1717, negative conditional: 1717, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 33636, positive: 32435, positive conditional: 0, positive unconditional: 32435, negative: 1201, negative conditional: 0, negative unconditional: 1201, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 887, positive: 868, positive conditional: 0, positive unconditional: 868, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 887, positive: 865, positive conditional: 0, positive unconditional: 865, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 81, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33636, positive: 31567, positive conditional: 0, positive unconditional: 31567, negative: 1182, negative conditional: 0, negative unconditional: 1182, unknown: 887, unknown conditional: 0, unknown unconditional: 887] , Statistics on independence cache: Total cache size (in pairs): 887, Positive cache size: 868, Positive conditional cache size: 0, Positive unconditional cache size: 868, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Independence queries for same thread: 516 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3125.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 59.0ms, AutomataDifference: 1164.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 718.0ms, PartialOrderReductionTime: 709.5ms, HoareTripleCheckerStatistics: 957 SDtfs, 1299 SDslu, 3223 SDs, 0 SdLazy, 417 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 226.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 850.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 221.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1972 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.2ms SsaConstructionTime, 114.4ms SatisfiabilityAnalysisTime, 707.8ms InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 2038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...