/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/safe019_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 00:18:20,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 00:18:20,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 00:18:20,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 00:18:20,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 00:18:20,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 00:18:20,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 00:18:20,940 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 [2021-07-14 00:18:20,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 00:18:20,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 00:18:20,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 00:18:20,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 00:18:20,977 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 00:18:20,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 00:18:20,978 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 00:18:20,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 00:18:20,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 00:18:20,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 00:18:20,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 00:18:20,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 00:18:20,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 00:18:20,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 00:18:20,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 00:18:20,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 00:18:20,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 00:18:20,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 00:18:20,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 00:18:20,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 00:18:20,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 00:18:20,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 00:18:20,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 00:18:20,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 00:18:20,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 00:18:20,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 00:18:20,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 00:18:20,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 00:18:20,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 00:18:20,982 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 00:18:20,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 00:18:21,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 00:18:21,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 00:18:21,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 00:18:21,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-14 00:18:21,264 INFO L275 PluginConnector]: CDTParser initialized [2021-07-14 00:18:21,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2021-07-14 00:18:21,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789dfa6a1/02c67ae1175b43b4839d4a40257a464c/FLAG1ccfee3b8 [2021-07-14 00:18:21,877 INFO L306 CDTParser]: Found 1 translation units. [2021-07-14 00:18:21,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2021-07-14 00:18:21,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789dfa6a1/02c67ae1175b43b4839d4a40257a464c/FLAG1ccfee3b8 [2021-07-14 00:18:22,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789dfa6a1/02c67ae1175b43b4839d4a40257a464c [2021-07-14 00:18:22,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 00:18:22,332 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-14 00:18:22,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-14 00:18:22,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-14 00:18:22,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-14 00:18:22,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7414de18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22, skipping insertion in model container [2021-07-14 00:18:22,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-14 00:18:22,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-14 00:18:22,540 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/safe019_pso.opt.i[949,962] [2021-07-14 00:18:22,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:18:22,700 INFO L203 MainTranslator]: Completed pre-run [2021-07-14 00:18:22,712 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/safe019_pso.opt.i[949,962] [2021-07-14 00:18:22,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:18:22,775 INFO L208 MainTranslator]: Completed translation [2021-07-14 00:18:22,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22 WrapperNode [2021-07-14 00:18:22,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-14 00:18:22,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 00:18:22,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 00:18:22,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 00:18:22,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 00:18:22,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 00:18:22,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 00:18:22,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 00:18:22,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (1/1) ... [2021-07-14 00:18:22,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 00:18:22,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 00:18:22,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 00:18:22,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 00:18:22,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (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 [2021-07-14 00:18:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-14 00:18:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-14 00:18:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-14 00:18:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-14 00:18:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-14 00:18:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-14 00:18:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-14 00:18:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-14 00:18:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-14 00:18:22,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-14 00:18:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-07-14 00:18:22,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-07-14 00:18:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-14 00:18:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-14 00:18:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 00:18:22,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 00:18:22,896 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 00:18:23,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 00:18:23,205 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-14 00:18:23,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:18:23 BoogieIcfgContainer [2021-07-14 00:18:23,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 00:18:23,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 00:18:23,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 00:18:23,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 00:18:23,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:18:22" (1/3) ... [2021-07-14 00:18:23,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d28fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:18:23, skipping insertion in model container [2021-07-14 00:18:23,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:22" (2/3) ... [2021-07-14 00:18:23,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d28fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:18:23, skipping insertion in model container [2021-07-14 00:18:23,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:18:23" (3/3) ... [2021-07-14 00:18:23,214 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2021-07-14 00:18:23,218 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 00:18:23,219 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 00:18:23,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 00:18:23,219 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 00:18:23,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,251 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,254 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,254 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,255 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,255 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,255 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,255 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,255 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,255 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,255 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,256 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,257 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,258 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,258 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:23,269 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 00:18:23,288 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-14 00:18:23,304 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 00:18:23,305 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 00:18:23,305 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 00:18:23,305 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 00:18:23,305 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 00:18:23,305 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 00:18:23,305 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 00:18:23,305 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 00:18:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 28883 states, 24123 states have (on average 2.1884094018156945) internal successors, (52791), 28882 states have internal predecessors, (52791), 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) [2021-07-14 00:18:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-14 00:18:25,600 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:25,601 INFO L508 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] [2021-07-14 00:18:25,601 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:25,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:25,610 INFO L82 PathProgramCache]: Analyzing trace with hash -352002722, now seen corresponding path program 1 times [2021-07-14 00:18:25,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:25,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996729531] [2021-07-14 00:18:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:25,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:25,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:25,967 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:18:25,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:18:25,988 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:25,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:26,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:26,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:26,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:26,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:26,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:26,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:26,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:26,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996729531] [2021-07-14 00:18:26,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996729531] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:26,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:26,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:18:26,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001926903] [2021-07-14 00:18:26,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:18:26,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:26,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:18:26,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:18:26,097 INFO L87 Difference]: Start difference. First operand has 28883 states, 24123 states have (on average 2.1884094018156945) internal successors, (52791), 28882 states have internal predecessors, (52791), 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 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-07-14 00:18:26,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:26,810 INFO L93 Difference]: Finished difference Result 53819 states and 100506 transitions. [2021-07-14 00:18:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:18:26,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-07-14 00:18:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:27,107 INFO L225 Difference]: With dead ends: 53819 [2021-07-14 00:18:27,107 INFO L226 Difference]: Without dead ends: 19977 [2021-07-14 00:18:27,108 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19977 states. [2021-07-14 00:18:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19977 to 15105. [2021-07-14 00:18:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15105 states, 14811 states have (on average 2.4373101073526433) internal successors, (36099), 15104 states have internal predecessors, (36099), 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) [2021-07-14 00:18:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15105 states to 15105 states and 36099 transitions. [2021-07-14 00:18:28,024 INFO L78 Accepts]: Start accepts. Automaton has 15105 states and 36099 transitions. Word has length 56 [2021-07-14 00:18:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:28,026 INFO L482 AbstractCegarLoop]: Abstraction has 15105 states and 36099 transitions. [2021-07-14 00:18:28,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-07-14 00:18:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 15105 states and 36099 transitions. [2021-07-14 00:18:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-14 00:18:28,046 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:28,047 INFO L508 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] [2021-07-14 00:18:28,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 00:18:28,047 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1722693825, now seen corresponding path program 1 times [2021-07-14 00:18:28,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:28,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087400777] [2021-07-14 00:18:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:28,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:28,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:28,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:28,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:28,162 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:18:28,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:18:28,172 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:28,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:28,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:28,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:28,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:28,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:28,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:28,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:28,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:28,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087400777] [2021-07-14 00:18:28,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087400777] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:28,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:28,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:28,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648150674] [2021-07-14 00:18:28,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:28,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:28,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:28,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:28,210 INFO L87 Difference]: Start difference. First operand 15105 states and 36099 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) [2021-07-14 00:18:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:28,816 INFO L93 Difference]: Finished difference Result 23361 states and 57845 transitions. [2021-07-14 00:18:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:18:28,817 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 [2021-07-14 00:18:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:28,869 INFO L225 Difference]: With dead ends: 23361 [2021-07-14 00:18:28,869 INFO L226 Difference]: Without dead ends: 16737 [2021-07-14 00:18:28,870 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 171.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:18:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16737 states. [2021-07-14 00:18:29,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16737 to 13305. [2021-07-14 00:18:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13305 states, 13011 states have (on average 2.487203135808162) internal successors, (32361), 13304 states have internal predecessors, (32361), 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) [2021-07-14 00:18:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 32361 transitions. [2021-07-14 00:18:29,427 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 32361 transitions. Word has length 58 [2021-07-14 00:18:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:29,428 INFO L482 AbstractCegarLoop]: Abstraction has 13305 states and 32361 transitions. [2021-07-14 00:18:29,428 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) [2021-07-14 00:18:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 32361 transitions. [2021-07-14 00:18:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-14 00:18:29,442 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:29,443 INFO L508 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] [2021-07-14 00:18:29,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 00:18:29,443 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:29,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:29,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1174288383, now seen corresponding path program 1 times [2021-07-14 00:18:29,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:29,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055935782] [2021-07-14 00:18:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:29,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:29,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:29,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:29,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:29,508 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:18:29,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:18:29,519 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:29,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:29,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:29,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:29,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:29,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:29,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:29,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:29,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:29,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055935782] [2021-07-14 00:18:29,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055935782] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:29,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:29,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:29,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073435918] [2021-07-14 00:18:29,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:29,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:29,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:29,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:29,561 INFO L87 Difference]: Start difference. First operand 13305 states and 32361 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) [2021-07-14 00:18:29,838 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-07-14 00:18:29,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:29,960 INFO L93 Difference]: Finished difference Result 18201 states and 46369 transitions. [2021-07-14 00:18:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:18:29,960 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 [2021-07-14 00:18:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:30,023 INFO L225 Difference]: With dead ends: 18201 [2021-07-14 00:18:30,025 INFO L226 Difference]: Without dead ends: 13635 [2021-07-14 00:18:30,026 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 279.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:18:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13635 states. [2021-07-14 00:18:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13635 to 10731. [2021-07-14 00:18:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10731 states, 10521 states have (on average 2.523714475810284) internal successors, (26552), 10730 states have internal predecessors, (26552), 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) [2021-07-14 00:18:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10731 states to 10731 states and 26552 transitions. [2021-07-14 00:18:30,400 INFO L78 Accepts]: Start accepts. Automaton has 10731 states and 26552 transitions. Word has length 58 [2021-07-14 00:18:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:30,402 INFO L482 AbstractCegarLoop]: Abstraction has 10731 states and 26552 transitions. [2021-07-14 00:18:30,402 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) [2021-07-14 00:18:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10731 states and 26552 transitions. [2021-07-14 00:18:30,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-14 00:18:30,415 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:30,416 INFO L508 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] [2021-07-14 00:18:30,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 00:18:30,416 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:30,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1231057856, now seen corresponding path program 1 times [2021-07-14 00:18:30,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:30,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141470179] [2021-07-14 00:18:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:30,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:30,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:30,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:30,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:30,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:30,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:30,542 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:18:30,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:18:30,565 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:30,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:30,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:30,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:30,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:30,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:30,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:30,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:30,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:30,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141470179] [2021-07-14 00:18:30,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141470179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:30,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:30,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:18:30,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349321634] [2021-07-14 00:18:30,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:18:30,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:30,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:18:30,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:18:30,606 INFO L87 Difference]: Start difference. First operand 10731 states and 26552 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2021-07-14 00:18:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:30,766 INFO L93 Difference]: Finished difference Result 18891 states and 48566 transitions. [2021-07-14 00:18:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 00:18:30,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 60 [2021-07-14 00:18:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:30,813 INFO L225 Difference]: With dead ends: 18891 [2021-07-14 00:18:30,813 INFO L226 Difference]: Without dead ends: 10971 [2021-07-14 00:18:30,814 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-14 00:18:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2021-07-14 00:18:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 9291. [2021-07-14 00:18:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9291 states, 9081 states have (on average 2.5513709943838783) internal successors, (23169), 9290 states have internal predecessors, (23169), 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) [2021-07-14 00:18:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 23169 transitions. [2021-07-14 00:18:31,195 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 23169 transitions. Word has length 60 [2021-07-14 00:18:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:31,196 INFO L482 AbstractCegarLoop]: Abstraction has 9291 states and 23169 transitions. [2021-07-14 00:18:31,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2021-07-14 00:18:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 23169 transitions. [2021-07-14 00:18:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-14 00:18:31,208 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:31,208 INFO L508 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] [2021-07-14 00:18:31,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 00:18:31,208 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:31,209 INFO L82 PathProgramCache]: Analyzing trace with hash -545408546, now seen corresponding path program 2 times [2021-07-14 00:18:31,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:31,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534680671] [2021-07-14 00:18:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:31,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:31,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:31,299 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:31,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:31,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:31,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:31,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:31,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:31,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534680671] [2021-07-14 00:18:31,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534680671] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:31,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:31,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:18:31,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655431980] [2021-07-14 00:18:31,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:18:31,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:31,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:18:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:18:31,350 INFO L87 Difference]: Start difference. First operand 9291 states and 23169 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2021-07-14 00:18:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:31,600 INFO L93 Difference]: Finished difference Result 10131 states and 26341 transitions. [2021-07-14 00:18:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:18:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2021-07-14 00:18:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:31,628 INFO L225 Difference]: With dead ends: 10131 [2021-07-14 00:18:31,628 INFO L226 Difference]: Without dead ends: 7797 [2021-07-14 00:18:31,628 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2021-07-14 00:18:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7797. [2021-07-14 00:18:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7797 states, 7647 states have (on average 2.5132731790244542) internal successors, (19219), 7796 states have internal predecessors, (19219), 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) [2021-07-14 00:18:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 19219 transitions. [2021-07-14 00:18:31,834 INFO L78 Accepts]: Start accepts. Automaton has 7797 states and 19219 transitions. Word has length 60 [2021-07-14 00:18:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:31,835 INFO L482 AbstractCegarLoop]: Abstraction has 7797 states and 19219 transitions. [2021-07-14 00:18:31,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2021-07-14 00:18:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7797 states and 19219 transitions. [2021-07-14 00:18:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-14 00:18:31,844 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:31,844 INFO L508 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] [2021-07-14 00:18:31,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 00:18:31,844 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash 330256253, now seen corresponding path program 1 times [2021-07-14 00:18:31,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:31,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129964921] [2021-07-14 00:18:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:31,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:31,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:31,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:31,906 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:18:31,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:18:31,922 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:31,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:31,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:31,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:31,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:31,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:31,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:31,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129964921] [2021-07-14 00:18:31,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129964921] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:31,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:31,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:18:31,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511848596] [2021-07-14 00:18:31,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:18:31,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:31,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:18:31,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:18:31,969 INFO L87 Difference]: Start difference. First operand 7797 states and 19219 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2021-07-14 00:18:32,209 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-07-14 00:18:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:32,296 INFO L93 Difference]: Finished difference Result 12609 states and 32408 transitions. [2021-07-14 00:18:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 00:18:32,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 [2021-07-14 00:18:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:32,324 INFO L225 Difference]: With dead ends: 12609 [2021-07-14 00:18:32,324 INFO L226 Difference]: Without dead ends: 6519 [2021-07-14 00:18:32,324 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 246.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:18:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2021-07-14 00:18:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 5303. [2021-07-14 00:18:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 5203 states have (on average 2.581779742456275) internal successors, (13433), 5302 states have internal predecessors, (13433), 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) [2021-07-14 00:18:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 13433 transitions. [2021-07-14 00:18:32,459 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 13433 transitions. Word has length 61 [2021-07-14 00:18:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:32,459 INFO L482 AbstractCegarLoop]: Abstraction has 5303 states and 13433 transitions. [2021-07-14 00:18:32,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2021-07-14 00:18:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 13433 transitions. [2021-07-14 00:18:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-07-14 00:18:32,466 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:32,467 INFO L508 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, 1, 1] [2021-07-14 00:18:32,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 00:18:32,467 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash 846472638, now seen corresponding path program 1 times [2021-07-14 00:18:32,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:32,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054793660] [2021-07-14 00:18:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:32,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:32,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:32,499 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:18:32,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:18:32,509 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:32,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:32,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:32,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:32,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:32,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:32,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054793660] [2021-07-14 00:18:32,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054793660] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:32,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:32,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:32,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096107239] [2021-07-14 00:18:32,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:32,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:32,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:32,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:32,546 INFO L87 Difference]: Start difference. First operand 5303 states and 13433 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-07-14 00:18:32,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:32,689 INFO L93 Difference]: Finished difference Result 8439 states and 24154 transitions. [2021-07-14 00:18:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 00:18:32,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 63 [2021-07-14 00:18:32,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:32,702 INFO L225 Difference]: With dead ends: 8439 [2021-07-14 00:18:32,702 INFO L226 Difference]: Without dead ends: 5367 [2021-07-14 00:18:32,705 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-14 00:18:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-07-14 00:18:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 4247. [2021-07-14 00:18:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4147 states have (on average 2.7171449240414756) internal successors, (11268), 4246 states have internal predecessors, (11268), 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) [2021-07-14 00:18:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 11268 transitions. [2021-07-14 00:18:32,880 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 11268 transitions. Word has length 63 [2021-07-14 00:18:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:32,881 INFO L482 AbstractCegarLoop]: Abstraction has 4247 states and 11268 transitions. [2021-07-14 00:18:32,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-07-14 00:18:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 11268 transitions. [2021-07-14 00:18:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-07-14 00:18:32,887 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:32,888 INFO L508 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, 1, 1, 1] [2021-07-14 00:18:32,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 00:18:32,888 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1420739396, now seen corresponding path program 1 times [2021-07-14 00:18:32,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:32,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036064511] [2021-07-14 00:18:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:32,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:32,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:32,952 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:18:32,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:18:32,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:18:32,977 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:18:32,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:32,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:32,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:32,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:32,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036064511] [2021-07-14 00:18:32,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036064511] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:32,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:32,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:18:32,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395690339] [2021-07-14 00:18:32,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:18:32,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:32,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:18:32,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:18:32,987 INFO L87 Difference]: Start difference. First operand 4247 states and 11268 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-07-14 00:18:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:33,102 INFO L93 Difference]: Finished difference Result 5951 states and 15296 transitions. [2021-07-14 00:18:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:18:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 64 [2021-07-14 00:18:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:33,110 INFO L225 Difference]: With dead ends: 5951 [2021-07-14 00:18:33,110 INFO L226 Difference]: Without dead ends: 4083 [2021-07-14 00:18:33,110 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2021-07-14 00:18:33,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 4083. [2021-07-14 00:18:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 3983 states have (on average 2.733868943007783) internal successors, (10889), 4082 states have internal predecessors, (10889), 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) [2021-07-14 00:18:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 10889 transitions. [2021-07-14 00:18:33,191 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 10889 transitions. Word has length 64 [2021-07-14 00:18:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:33,191 INFO L482 AbstractCegarLoop]: Abstraction has 4083 states and 10889 transitions. [2021-07-14 00:18:33,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-07-14 00:18:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 10889 transitions. [2021-07-14 00:18:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-07-14 00:18:33,198 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:33,198 INFO L508 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, 1, 1, 1, 1] [2021-07-14 00:18:33,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 00:18:33,198 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:33,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1040855314, now seen corresponding path program 1 times [2021-07-14 00:18:33,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:33,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807369598] [2021-07-14 00:18:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:33,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:33,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,241 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:18:33,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:18:33,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:18:33,270 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:18:33,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:33,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:33,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:33,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807369598] [2021-07-14 00:18:33,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807369598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:33,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:33,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:33,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486530410] [2021-07-14 00:18:33,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:33,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:33,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:33,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:33,281 INFO L87 Difference]: Start difference. First operand 4083 states and 10889 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-07-14 00:18:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:33,425 INFO L93 Difference]: Finished difference Result 5118 states and 13114 transitions. [2021-07-14 00:18:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 00:18:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2021-07-14 00:18:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:33,434 INFO L225 Difference]: With dead ends: 5118 [2021-07-14 00:18:33,434 INFO L226 Difference]: Without dead ends: 3358 [2021-07-14 00:18:33,435 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-14 00:18:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-07-14 00:18:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3358. [2021-07-14 00:18:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 3262 states have (on average 2.7265481299816066) internal successors, (8894), 3357 states have internal predecessors, (8894), 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) [2021-07-14 00:18:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 8894 transitions. [2021-07-14 00:18:33,554 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 8894 transitions. Word has length 65 [2021-07-14 00:18:33,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:33,554 INFO L482 AbstractCegarLoop]: Abstraction has 3358 states and 8894 transitions. [2021-07-14 00:18:33,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-07-14 00:18:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 8894 transitions. [2021-07-14 00:18:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-07-14 00:18:33,562 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:33,562 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-14 00:18:33,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-14 00:18:33,563 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash 449921699, now seen corresponding path program 1 times [2021-07-14 00:18:33,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:33,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861502933] [2021-07-14 00:18:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:33,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:33,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,632 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:18:33,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:18:33,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:18:33,661 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:18:33,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:33,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:33,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:33,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861502933] [2021-07-14 00:18:33,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861502933] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:33,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:33,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:18:33,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228614309] [2021-07-14 00:18:33,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:18:33,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:33,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:18:33,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:18:33,673 INFO L87 Difference]: Start difference. First operand 3358 states and 8894 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-07-14 00:18:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:33,835 INFO L93 Difference]: Finished difference Result 3331 states and 8266 transitions. [2021-07-14 00:18:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 00:18:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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 66 [2021-07-14 00:18:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:33,840 INFO L225 Difference]: With dead ends: 3331 [2021-07-14 00:18:33,840 INFO L226 Difference]: Without dead ends: 1987 [2021-07-14 00:18:33,840 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:18:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-07-14 00:18:33,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1987. [2021-07-14 00:18:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1915 states have (on average 2.5848563968668405) internal successors, (4950), 1986 states have internal predecessors, (4950), 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) [2021-07-14 00:18:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 4950 transitions. [2021-07-14 00:18:33,873 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 4950 transitions. Word has length 66 [2021-07-14 00:18:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:33,873 INFO L482 AbstractCegarLoop]: Abstraction has 1987 states and 4950 transitions. [2021-07-14 00:18:33,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-07-14 00:18:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 4950 transitions. [2021-07-14 00:18:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-07-14 00:18:33,877 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:33,877 INFO L508 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, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 00:18:33,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-14 00:18:33,877 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:33,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1539434394, now seen corresponding path program 1 times [2021-07-14 00:18:33,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:33,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614583248] [2021-07-14 00:18:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:33,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:33,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:33,948 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:18:33,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:18:33,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:18:33,978 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:18:33,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:33,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:33,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:33,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:33,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614583248] [2021-07-14 00:18:33,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614583248] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:33,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:33,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 00:18:33,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456636767] [2021-07-14 00:18:33,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 00:18:33,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:34,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 00:18:34,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 00:18:34,000 INFO L87 Difference]: Start difference. First operand 1987 states and 4950 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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) [2021-07-14 00:18:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:34,166 INFO L93 Difference]: Finished difference Result 1447 states and 3284 transitions. [2021-07-14 00:18:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 00:18:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2021-07-14 00:18:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:34,169 INFO L225 Difference]: With dead ends: 1447 [2021-07-14 00:18:34,169 INFO L226 Difference]: Without dead ends: 726 [2021-07-14 00:18:34,169 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-07-14 00:18:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-07-14 00:18:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2021-07-14 00:18:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 699 states have (on average 2.1945636623748213) internal successors, (1534), 725 states have internal predecessors, (1534), 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) [2021-07-14 00:18:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1534 transitions. [2021-07-14 00:18:34,179 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1534 transitions. Word has length 68 [2021-07-14 00:18:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:34,179 INFO L482 AbstractCegarLoop]: Abstraction has 726 states and 1534 transitions. [2021-07-14 00:18:34,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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) [2021-07-14 00:18:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1534 transitions. [2021-07-14 00:18:34,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-07-14 00:18:34,181 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:34,181 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 00:18:34,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-14 00:18:34,181 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:34,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:34,181 INFO L82 PathProgramCache]: Analyzing trace with hash -503537053, now seen corresponding path program 1 times [2021-07-14 00:18:34,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:34,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926784614] [2021-07-14 00:18:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:34,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:34,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:34,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:18:34,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:18:34,252 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:34,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:34,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:34,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:34,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:34,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:34,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926784614] [2021-07-14 00:18:34,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926784614] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:34,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:34,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:34,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782077681] [2021-07-14 00:18:34,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:34,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:34,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:34,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:34,290 INFO L87 Difference]: Start difference. First operand 726 states and 1534 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-07-14 00:18:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:34,387 INFO L93 Difference]: Finished difference Result 1060 states and 2434 transitions. [2021-07-14 00:18:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 00:18:34,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 70 [2021-07-14 00:18:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:34,389 INFO L225 Difference]: With dead ends: 1060 [2021-07-14 00:18:34,389 INFO L226 Difference]: Without dead ends: 638 [2021-07-14 00:18:34,390 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-07-14 00:18:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2021-07-14 00:18:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 611 states have (on average 2.2749590834697218) internal successors, (1390), 637 states have internal predecessors, (1390), 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) [2021-07-14 00:18:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1390 transitions. [2021-07-14 00:18:34,398 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1390 transitions. Word has length 70 [2021-07-14 00:18:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:34,399 INFO L482 AbstractCegarLoop]: Abstraction has 638 states and 1390 transitions. [2021-07-14 00:18:34,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-07-14 00:18:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1390 transitions. [2021-07-14 00:18:34,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-07-14 00:18:34,400 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:34,400 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 00:18:34,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-14 00:18:34,400 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1642851141, now seen corresponding path program 2 times [2021-07-14 00:18:34,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:34,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048914148] [2021-07-14 00:18:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:34,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:34,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:34,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:34,443 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:34,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:34,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:34,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:34,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:34,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:34,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:34,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048914148] [2021-07-14 00:18:34,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048914148] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:34,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:34,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:34,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938506387] [2021-07-14 00:18:34,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:34,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:34,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:34,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:34,482 INFO L87 Difference]: Start difference. First operand 638 states and 1390 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-07-14 00:18:34,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:34,547 INFO L93 Difference]: Finished difference Result 530 states and 1174 transitions. [2021-07-14 00:18:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 00:18:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 70 [2021-07-14 00:18:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:34,547 INFO L225 Difference]: With dead ends: 530 [2021-07-14 00:18:34,547 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 00:18:34,548 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 00:18:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 00:18:34,548 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) [2021-07-14 00:18:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 00:18:34,549 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2021-07-14 00:18:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:34,549 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 00:18:34,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-07-14 00:18:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 00:18:34,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 00:18:34,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-14 00:18:34,551 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 00:18:34,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 12:18:34 BasicIcfg [2021-07-14 00:18:34,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 00:18:34,558 INFO L168 Benchmark]: Toolchain (without parser) took 12223.75 ms. Allocated memory was 172.0 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 135.2 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 648.6 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:34,559 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 172.0 MB. Free memory was 153.5 MB in the beginning and 153.4 MB in the end (delta: 107.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 00:18:34,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.43 ms. Allocated memory is still 172.0 MB. Free memory was 135.0 MB in the beginning and 145.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:34,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 172.0 MB. Free memory was 145.2 MB in the beginning and 143.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:34,559 INFO L168 Benchmark]: Boogie Preprocessor took 19.74 ms. Allocated memory is still 172.0 MB. Free memory was 143.1 MB in the beginning and 141.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:34,560 INFO L168 Benchmark]: RCFGBuilder took 374.57 ms. Allocated memory is still 172.0 MB. Free memory was 141.5 MB in the beginning and 115.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:34,560 INFO L168 Benchmark]: TraceAbstraction took 11346.47 ms. Allocated memory was 172.0 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 114.8 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 627.7 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:34,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 172.0 MB. Free memory was 153.5 MB in the beginning and 153.4 MB in the end (delta: 107.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 442.43 ms. Allocated memory is still 172.0 MB. Free memory was 135.0 MB in the beginning and 145.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 172.0 MB. Free memory was 145.2 MB in the beginning and 143.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.74 ms. Allocated memory is still 172.0 MB. Free memory was 143.1 MB in the beginning and 141.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 374.57 ms. Allocated memory is still 172.0 MB. Free memory was 141.5 MB in the beginning and 115.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11346.47 ms. Allocated memory was 172.0 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 114.8 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 627.7 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: 134535, positive: 130677, positive conditional: 130677, positive unconditional: 0, negative: 3858, negative conditional: 3858, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 134076, positive: 130677, positive conditional: 0, positive unconditional: 130677, negative: 3399, negative conditional: 0, negative unconditional: 3399, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 985, positive: 962, positive conditional: 0, positive unconditional: 962, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 985, positive: 955, positive conditional: 0, positive unconditional: 955, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 134076, positive: 129715, positive conditional: 0, positive unconditional: 129715, negative: 3376, negative conditional: 0, negative unconditional: 3376, unknown: 985, unknown conditional: 0, unknown unconditional: 985] , Statistics on independence cache: Total cache size (in pairs): 985, Positive cache size: 962, Positive conditional cache size: 0, Positive unconditional cache size: 962, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Independence queries for same thread: 459 - 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 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11247.2ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 400.6ms, AutomataDifference: 3989.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1994.6ms, PartialOrderReductionTime: 1979.9ms, HoareTripleCheckerStatistics: 1503 SDtfs, 2257 SDslu, 4834 SDs, 0 SdLazy, 647 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 506.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1758.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28883occurred in iteration=0, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2980.4ms AutomataMinimizationTime, 13 MinimizatonAttempts, 15224 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 42.0ms SsaConstructionTime, 291.5ms SatisfiabilityAnalysisTime, 1326.9ms InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 2836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...