/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/safe028_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 22:12:42,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 22:12:42,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 22:12:42,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 22:12:42,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 22:12:42,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 22:12:42,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 22:12:42,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 22:12:42,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 22:12:42,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 22:12:42,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 22:12:42,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 22:12:42,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 22:12:42,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 22:12:42,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 22:12:42,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 22:12:42,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 22:12:42,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 22:12:42,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 22:12:42,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 22:12:42,259 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 [2021-07-09 22:12:42,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 22:12:42,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 22:12:42,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 22:12:42,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 22:12:42,289 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 22:12:42,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 22:12:42,289 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 22:12:42,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 22:12:42,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 22:12:42,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 22:12:42,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 22:12:42,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 22:12:42,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 22:12:42,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 22:12:42,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 22:12:42,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 22:12:42,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 22:12:42,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 22:12:42,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 22:12:42,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 22:12:42,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 22:12:42,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:12:42,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 22:12:42,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 22:12:42,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 22:12:42,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 22:12:42,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 22:12:42,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 22:12:42,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 22:12:42,292 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 22:12:42,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 22:12:42,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 22:12:42,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 22:12:42,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 22:12:42,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 22:12:42,583 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 22:12:42,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2021-07-09 22:12:42,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4c662cf/988d79b1e9424db79ceb36b508301d0a/FLAG2fccc9444 [2021-07-09 22:12:43,117 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 22:12:43,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2021-07-09 22:12:43,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4c662cf/988d79b1e9424db79ceb36b508301d0a/FLAG2fccc9444 [2021-07-09 22:12:43,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4c662cf/988d79b1e9424db79ceb36b508301d0a [2021-07-09 22:12:43,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 22:12:43,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 22:12:43,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 22:12:43,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 22:12:43,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 22:12:43,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270b5bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43, skipping insertion in model container [2021-07-09 22:12:43,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 22:12:43,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 22:12:43,619 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/safe028_tso.opt.i[949,962] [2021-07-09 22:12:43,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:12:43,785 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 22:12:43,795 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/safe028_tso.opt.i[949,962] [2021-07-09 22:12:43,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:12:43,859 INFO L208 MainTranslator]: Completed translation [2021-07-09 22:12:43,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43 WrapperNode [2021-07-09 22:12:43,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 22:12:43,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 22:12:43,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 22:12:43,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 22:12:43,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 22:12:43,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 22:12:43,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 22:12:43,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 22:12:43,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (1/1) ... [2021-07-09 22:12:43,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 22:12:43,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 22:12:43,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 22:12:43,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 22:12:43,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (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 [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 22:12:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 22:12:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 22:12:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 22:12:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 22:12:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 22:12:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 22:12:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 22:12:43,951 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 22:12:44,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 22:12:44,234 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 22:12:44,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:12:44 BoogieIcfgContainer [2021-07-09 22:12:44,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 22:12:44,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 22:12:44,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 22:12:44,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 22:12:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 10:12:43" (1/3) ... [2021-07-09 22:12:44,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63824bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:12:44, skipping insertion in model container [2021-07-09 22:12:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:12:43" (2/3) ... [2021-07-09 22:12:44,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63824bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:12:44, skipping insertion in model container [2021-07-09 22:12:44,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:12:44" (3/3) ... [2021-07-09 22:12:44,242 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.opt.i [2021-07-09 22:12:44,248 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 22:12:44,248 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 22:12:44,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 22:12:44,249 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 22:12:44,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,280 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,280 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,284 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,284 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,284 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,284 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,284 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,285 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,285 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,288 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,297 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,297 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,298 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,298 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,300 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,300 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,300 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,300 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:12:44,304 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 22:12:44,320 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 22:12:44,343 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 22:12:44,343 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 22:12:44,343 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 22:12:44,343 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 22:12:44,343 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 22:12:44,343 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 22:12:44,343 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 22:12:44,343 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 22:12:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 4775 states, 4089 states have (on average 1.9616043042308633) internal successors, (8021), 4774 states have internal predecessors, (8021), 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) [2021-07-09 22:12:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-09 22:12:44,758 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:44,759 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] [2021-07-09 22:12:44,760 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:44,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:44,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1358275693, now seen corresponding path program 1 times [2021-07-09 22:12:44,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:44,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075245077] [2021-07-09 22:12:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:45,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:45,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:45,100 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:12:45,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:12:45,120 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:45,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:45,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:45,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:45,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:45,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:45,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075245077] [2021-07-09 22:12:45,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075245077] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:45,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:45,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:45,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764245620] [2021-07-09 22:12:45,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:45,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:45,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:45,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:45,193 INFO L87 Difference]: Start difference. First operand has 4775 states, 4089 states have (on average 1.9616043042308633) internal successors, (8021), 4774 states have internal predecessors, (8021), 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 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:45,423 INFO L93 Difference]: Finished difference Result 5447 states and 9288 transitions. [2021-07-09 22:12:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:12:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-07-09 22:12:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:45,449 INFO L225 Difference]: With dead ends: 5447 [2021-07-09 22:12:45,450 INFO L226 Difference]: Without dead ends: 2138 [2021-07-09 22:12:45,451 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-09 22:12:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-07-09 22:12:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2138. [2021-07-09 22:12:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 2096 states have (on average 2.176526717557252) internal successors, (4562), 2137 states have internal predecessors, (4562), 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) [2021-07-09 22:12:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 4562 transitions. [2021-07-09 22:12:45,563 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 4562 transitions. Word has length 49 [2021-07-09 22:12:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:45,563 INFO L482 AbstractCegarLoop]: Abstraction has 2138 states and 4562 transitions. [2021-07-09 22:12:45,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 4562 transitions. [2021-07-09 22:12:45,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-09 22:12:45,567 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:45,567 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] [2021-07-09 22:12:45,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 22:12:45,567 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:45,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2014398478, now seen corresponding path program 1 times [2021-07-09 22:12:45,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:45,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099962098] [2021-07-09 22:12:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:45,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:45,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:45,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:45,638 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:45,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:45,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:45,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:45,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:45,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:45,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099962098] [2021-07-09 22:12:45,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099962098] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:45,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:45,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:45,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512880311] [2021-07-09 22:12:45,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:45,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:45,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:45,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:45,674 INFO L87 Difference]: Start difference. First operand 2138 states and 4562 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:45,800 INFO L93 Difference]: Finished difference Result 2866 states and 6375 transitions. [2021-07-09 22:12:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 22:12:45,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-07-09 22:12:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:45,807 INFO L225 Difference]: With dead ends: 2866 [2021-07-09 22:12:45,807 INFO L226 Difference]: Without dead ends: 1522 [2021-07-09 22:12:45,808 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-09 22:12:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-07-09 22:12:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1522. [2021-07-09 22:12:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1494 states have (on average 2.218206157965194) internal successors, (3314), 1521 states have internal predecessors, (3314), 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) [2021-07-09 22:12:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 3314 transitions. [2021-07-09 22:12:45,839 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 3314 transitions. Word has length 51 [2021-07-09 22:12:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:45,840 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 3314 transitions. [2021-07-09 22:12:45,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 3314 transitions. [2021-07-09 22:12:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 22:12:45,845 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:45,845 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] [2021-07-09 22:12:45,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 22:12:45,846 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:45,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1676859697, now seen corresponding path program 1 times [2021-07-09 22:12:45,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:45,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296897389] [2021-07-09 22:12:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:45,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:45,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:45,944 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:12:45,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:12:45,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:12:45,969 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:12:45,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:45,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:45,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:45,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:45,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296897389] [2021-07-09 22:12:45,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296897389] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:45,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:45,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:12:45,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380262727] [2021-07-09 22:12:45,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:12:45,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:45,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:12:45,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:12:45,982 INFO L87 Difference]: Start difference. First operand 1522 states and 3314 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:46,093 INFO L93 Difference]: Finished difference Result 1970 states and 4105 transitions. [2021-07-09 22:12:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:12:46,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-07-09 22:12:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:46,098 INFO L225 Difference]: With dead ends: 1970 [2021-07-09 22:12:46,099 INFO L226 Difference]: Without dead ends: 1354 [2021-07-09 22:12:46,099 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:12:46,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-07-09 22:12:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1354. [2021-07-09 22:12:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1326 states have (on average 2.2119155354449473) internal successors, (2933), 1353 states have internal predecessors, (2933), 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) [2021-07-09 22:12:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 2933 transitions. [2021-07-09 22:12:46,137 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 2933 transitions. Word has length 53 [2021-07-09 22:12:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:46,139 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 2933 transitions. [2021-07-09 22:12:46,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 2933 transitions. [2021-07-09 22:12:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 22:12:46,141 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:46,141 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] [2021-07-09 22:12:46,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 22:12:46,141 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:46,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:46,143 INFO L82 PathProgramCache]: Analyzing trace with hash 900258411, now seen corresponding path program 1 times [2021-07-09 22:12:46,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:46,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134652054] [2021-07-09 22:12:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:46,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,181 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:12:46,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:12:46,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:12:46,200 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:12:46,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:46,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:46,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134652054] [2021-07-09 22:12:46,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134652054] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:46,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:46,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:46,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498832968] [2021-07-09 22:12:46,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:46,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:46,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:46,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:46,210 INFO L87 Difference]: Start difference. First operand 1354 states and 2933 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:46,304 INFO L93 Difference]: Finished difference Result 1312 states and 2634 transitions. [2021-07-09 22:12:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 22:12:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-09 22:12:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:46,308 INFO L225 Difference]: With dead ends: 1312 [2021-07-09 22:12:46,308 INFO L226 Difference]: Without dead ends: 787 [2021-07-09 22:12:46,308 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 22:12:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-07-09 22:12:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2021-07-09 22:12:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 763 states have (on average 2.123197903014417) internal successors, (1620), 786 states have internal predecessors, (1620), 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) [2021-07-09 22:12:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1620 transitions. [2021-07-09 22:12:46,321 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1620 transitions. Word has length 54 [2021-07-09 22:12:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:46,321 INFO L482 AbstractCegarLoop]: Abstraction has 787 states and 1620 transitions. [2021-07-09 22:12:46,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1620 transitions. [2021-07-09 22:12:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-09 22:12:46,322 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:46,322 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] [2021-07-09 22:12:46,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 22:12:46,322 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2054270840, now seen corresponding path program 1 times [2021-07-09 22:12:46,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:46,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573826704] [2021-07-09 22:12:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:46,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,362 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:12:46,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:12:46,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:12:46,382 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:12:46,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:46,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:46,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573826704] [2021-07-09 22:12:46,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573826704] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:46,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:46,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:12:46,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133904539] [2021-07-09 22:12:46,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:12:46,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:46,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:12:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:12:46,391 INFO L87 Difference]: Start difference. First operand 787 states and 1620 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2021-07-09 22:12:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:46,499 INFO L93 Difference]: Finished difference Result 544 states and 995 transitions. [2021-07-09 22:12:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 22:12:46,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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 [2021-07-09 22:12:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:46,500 INFO L225 Difference]: With dead ends: 544 [2021-07-09 22:12:46,500 INFO L226 Difference]: Without dead ends: 273 [2021-07-09 22:12:46,500 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:12:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-07-09 22:12:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-07-09 22:12:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 264 states have (on average 1.75) internal successors, (462), 272 states have internal predecessors, (462), 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) [2021-07-09 22:12:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 462 transitions. [2021-07-09 22:12:46,504 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 462 transitions. Word has length 56 [2021-07-09 22:12:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:46,505 INFO L482 AbstractCegarLoop]: Abstraction has 273 states and 462 transitions. [2021-07-09 22:12:46,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2021-07-09 22:12:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 462 transitions. [2021-07-09 22:12:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-09 22:12:46,505 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:46,505 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] [2021-07-09 22:12:46,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 22:12:46,506 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1340920160, now seen corresponding path program 1 times [2021-07-09 22:12:46,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:46,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996296934] [2021-07-09 22:12:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:46,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,537 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:12:46,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:12:46,543 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:46,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:46,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:46,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:46,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996296934] [2021-07-09 22:12:46,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996296934] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:46,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:46,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:46,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691361972] [2021-07-09 22:12:46,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:46,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:46,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:46,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:46,574 INFO L87 Difference]: Start difference. First operand 273 states and 462 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2021-07-09 22:12:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:46,649 INFO L93 Difference]: Finished difference Result 427 states and 762 transitions. [2021-07-09 22:12:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 22:12:46,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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 [2021-07-09 22:12:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:46,651 INFO L225 Difference]: With dead ends: 427 [2021-07-09 22:12:46,651 INFO L226 Difference]: Without dead ends: 291 [2021-07-09 22:12:46,651 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:12:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-07-09 22:12:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 243. [2021-07-09 22:12:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 234 states have (on average 1.7863247863247864) internal successors, (418), 242 states have internal predecessors, (418), 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) [2021-07-09 22:12:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 418 transitions. [2021-07-09 22:12:46,655 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 418 transitions. Word has length 60 [2021-07-09 22:12:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:46,655 INFO L482 AbstractCegarLoop]: Abstraction has 243 states and 418 transitions. [2021-07-09 22:12:46,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2021-07-09 22:12:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 418 transitions. [2021-07-09 22:12:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-09 22:12:46,656 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:46,656 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] [2021-07-09 22:12:46,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 22:12:46,656 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash -739846462, now seen corresponding path program 2 times [2021-07-09 22:12:46,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:46,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477395259] [2021-07-09 22:12:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:46,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,688 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-09 22:12:46,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 22:12:46,695 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:46,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:46,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:46,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:46,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477395259] [2021-07-09 22:12:46,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477395259] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:46,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:46,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:12:46,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899442844] [2021-07-09 22:12:46,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:12:46,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:46,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:12:46,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:12:46,736 INFO L87 Difference]: Start difference. First operand 243 states and 418 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) [2021-07-09 22:12:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:46,797 INFO L93 Difference]: Finished difference Result 397 states and 718 transitions. [2021-07-09 22:12:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 22:12:46,797 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 [2021-07-09 22:12:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:46,798 INFO L225 Difference]: With dead ends: 397 [2021-07-09 22:12:46,798 INFO L226 Difference]: Without dead ends: 239 [2021-07-09 22:12:46,798 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-09 22:12:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-07-09 22:12:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-07-09 22:12:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 230 states have (on average 1.791304347826087) internal successors, (412), 238 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:12:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 412 transitions. [2021-07-09 22:12:46,802 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 412 transitions. Word has length 60 [2021-07-09 22:12:46,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:46,803 INFO L482 AbstractCegarLoop]: Abstraction has 239 states and 412 transitions. [2021-07-09 22:12:46,803 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) [2021-07-09 22:12:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 412 transitions. [2021-07-09 22:12:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-09 22:12:46,803 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:12:46,804 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] [2021-07-09 22:12:46,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 22:12:46,804 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:12:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:12:46,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1750372576, now seen corresponding path program 3 times [2021-07-09 22:12:46,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:12:46,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851950883] [2021-07-09 22:12:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:12:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:12:46,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:12:46,873 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:12:46,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:12:46,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:12:46,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:12:46,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:12:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:12:46,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:12:46,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851950883] [2021-07-09 22:12:46,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851950883] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:12:46,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:12:46,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:12:46,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207373348] [2021-07-09 22:12:46,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:12:46,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:12:46,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:12:46,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:12:46,903 INFO L87 Difference]: Start difference. First operand 239 states and 412 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2021-07-09 22:12:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:12:46,947 INFO L93 Difference]: Finished difference Result 203 states and 352 transitions. [2021-07-09 22:12:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 22:12:46,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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 [2021-07-09 22:12:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:12:46,948 INFO L225 Difference]: With dead ends: 203 [2021-07-09 22:12:46,948 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 22:12:46,948 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:12:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 22:12:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 22:12:46,948 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) [2021-07-09 22:12:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 22:12:46,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-07-09 22:12:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:12:46,949 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 22:12:46,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2021-07-09 22:12:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 22:12:46,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 22:12:46,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 22:12:46,950 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 22:12:46,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 10:12:46 BasicIcfg [2021-07-09 22:12:46,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 22:12:46,953 INFO L168 Benchmark]: Toolchain (without parser) took 3510.71 ms. Allocated memory was 199.2 MB in the beginning and 288.4 MB in the end (delta: 89.1 MB). Free memory was 162.2 MB in the beginning and 209.9 MB in the end (delta: -47.6 MB). Peak memory consumption was 41.7 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:46,954 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 199.2 MB. Free memory is still 180.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:12:46,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.27 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 172.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:46,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.65 ms. Allocated memory is still 199.2 MB. Free memory was 172.1 MB in the beginning and 170.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:46,961 INFO L168 Benchmark]: Boogie Preprocessor took 14.35 ms. Allocated memory is still 199.2 MB. Free memory was 170.5 MB in the beginning and 168.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:46,962 INFO L168 Benchmark]: RCFGBuilder took 335.48 ms. Allocated memory is still 199.2 MB. Free memory was 168.9 MB in the beginning and 145.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:46,962 INFO L168 Benchmark]: TraceAbstraction took 2714.04 ms. Allocated memory was 199.2 MB in the beginning and 288.4 MB in the end (delta: 89.1 MB). Free memory was 144.8 MB in the beginning and 209.9 MB in the end (delta: -65.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. [2021-07-09 22:12:46,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 199.2 MB. Free memory is still 180.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 415.27 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 172.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.65 ms. Allocated memory is still 199.2 MB. Free memory was 172.1 MB in the beginning and 170.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.35 ms. Allocated memory is still 199.2 MB. Free memory was 170.5 MB in the beginning and 168.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 335.48 ms. Allocated memory is still 199.2 MB. Free memory was 168.9 MB in the beginning and 145.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2714.04 ms. Allocated memory was 199.2 MB in the beginning and 288.4 MB in the end (delta: 89.1 MB). Free memory was 144.8 MB in the beginning and 209.9 MB in the end (delta: -65.1 MB). Peak memory consumption was 25.6 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: 15594, positive: 15083, positive conditional: 15083, positive unconditional: 0, negative: 511, negative conditional: 511, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15525, positive: 15083, positive conditional: 0, positive unconditional: 15083, negative: 442, negative conditional: 0, negative unconditional: 442, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 621, positive: 608, positive conditional: 0, positive unconditional: 608, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 621, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 40, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15525, positive: 14475, positive conditional: 0, positive unconditional: 14475, negative: 429, negative conditional: 0, negative unconditional: 429, unknown: 621, unknown conditional: 0, unknown unconditional: 621] , Statistics on independence cache: Total cache size (in pairs): 621, Positive cache size: 608, Positive conditional cache size: 0, Positive unconditional cache size: 608, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Independence queries for same thread: 69 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2608.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 44.1ms, AutomataDifference: 918.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 383.3ms, PartialOrderReductionTime: 367.7ms, HoareTripleCheckerStatistics: 684 SDtfs, 928 SDslu, 2306 SDs, 0 SdLazy, 313 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 745.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4775occurred in iteration=0, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 197.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.6ms SsaConstructionTime, 157.9ms SatisfiabilityAnalysisTime, 754.2ms InterpolantComputationTime, 443 NumberOfCodeBlocks, 443 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 1597 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...