/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/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 00:18:13,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 00:18:13,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 00:18:13,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 00:18:13,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 00:18:13,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 00:18:13,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 00:18:13,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 00:18:13,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 00:18:13,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 00:18:13,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 00:18:13,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 00:18:13,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 00:18:13,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 00:18:13,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 00:18:13,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 00:18:13,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 00:18:13,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 00:18:13,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 00:18:13,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 00:18:13,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-14 00:18:13,266 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 00:18:13,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 00:18:13,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 00:18:13,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 00:18:13,269 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 00:18:13,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 00:18:13,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 00:18:13,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 00:18:13,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 00:18:13,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 00:18:13,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 00:18:13,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 00:18:13,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 00:18:13,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 00:18:13,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 00:18:13,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 00:18:13,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 00:18:13,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 00:18:13,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 00:18:13,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 00:18:13,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 00:18:13,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 00:18:13,272 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 00:18:13,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 00:18:13,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 00:18:13,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 00:18:13,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 00:18:13,601 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-14 00:18:13,602 INFO L275 PluginConnector]: CDTParser initialized [2021-07-14 00:18:13,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-07-14 00:18:13,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a9e4b29/799a445d16df40a9924e62f449ab9fff/FLAG06da9072d [2021-07-14 00:18:14,082 INFO L306 CDTParser]: Found 1 translation units. [2021-07-14 00:18:14,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-07-14 00:18:14,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a9e4b29/799a445d16df40a9924e62f449ab9fff/FLAG06da9072d [2021-07-14 00:18:14,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a9e4b29/799a445d16df40a9924e62f449ab9fff [2021-07-14 00:18:14,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 00:18:14,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-14 00:18:14,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-14 00:18:14,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-14 00:18:14,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-14 00:18:14,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424e8cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14, skipping insertion in model container [2021-07-14 00:18:14,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-14 00:18:14,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-14 00:18:14,309 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/safe018_pso.opt.i[949,962] [2021-07-14 00:18:14,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:18:14,440 INFO L203 MainTranslator]: Completed pre-run [2021-07-14 00:18:14,447 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/safe018_pso.opt.i[949,962] [2021-07-14 00:18:14,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:18:14,505 INFO L208 MainTranslator]: Completed translation [2021-07-14 00:18:14,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14 WrapperNode [2021-07-14 00:18:14,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-14 00:18:14,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 00:18:14,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 00:18:14,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 00:18:14,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 00:18:14,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 00:18:14,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 00:18:14,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 00:18:14,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... [2021-07-14 00:18:14,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 00:18:14,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 00:18:14,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 00:18:14,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 00:18:14,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 00:18:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-14 00:18:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-14 00:18:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-14 00:18:14,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-14 00:18:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-14 00:18:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-14 00:18:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-14 00:18:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-14 00:18:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-14 00:18:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-14 00:18:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-14 00:18:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-14 00:18:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 00:18:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 00:18:14,643 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 00:18:14,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 00:18:14,923 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-14 00:18:14,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:18:14 BoogieIcfgContainer [2021-07-14 00:18:14,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 00:18:14,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 00:18:14,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 00:18:14,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 00:18:14,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:18:14" (1/3) ... [2021-07-14 00:18:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fad6115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:18:14, skipping insertion in model container [2021-07-14 00:18:14,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:18:14" (2/3) ... [2021-07-14 00:18:14,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fad6115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:18:14, skipping insertion in model container [2021-07-14 00:18:14,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:18:14" (3/3) ... [2021-07-14 00:18:14,929 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2021-07-14 00:18:14,932 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 00:18:14,932 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 00:18:14,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 00:18:14,933 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 00:18:14,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,951 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,951 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,955 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,955 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,955 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,955 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:18:14,961 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 00:18:14,975 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-14 00:18:14,986 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 00:18:14,987 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 00:18:14,987 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 00:18:14,987 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 00:18:14,987 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 00:18:14,987 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 00:18:14,987 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 00:18:14,987 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 00:18:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-14 00:18:15,342 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:15,342 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] [2021-07-14 00:18:15,343 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1924556435, now seen corresponding path program 1 times [2021-07-14 00:18:15,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:15,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951673896] [2021-07-14 00:18:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:15,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:15,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:15,544 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:15,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:15,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:15,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:15,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:15,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:15,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951673896] [2021-07-14 00:18:15,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951673896] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:15,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:15,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:18:15,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895739051] [2021-07-14 00:18:15,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:18:15,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:15,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:18:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:18:15,595 INFO L87 Difference]: Start difference. First operand has 4775 states, 4089 states have (on average 1.9498654927855221) internal successors, (7973), 4774 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:15,710 INFO L93 Difference]: Finished difference Result 5447 states and 9250 transitions. [2021-07-14 00:18:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:18:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-07-14 00:18:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:15,729 INFO L225 Difference]: With dead ends: 5447 [2021-07-14 00:18:15,729 INFO L226 Difference]: Without dead ends: 2048 [2021-07-14 00:18:15,730 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-07-14 00:18:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2048. [2021-07-14 00:18:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2018 states have (on average 2.1337958374628343) internal successors, (4306), 2047 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 4306 transitions. [2021-07-14 00:18:15,807 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 4306 transitions. Word has length 49 [2021-07-14 00:18:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:15,807 INFO L482 AbstractCegarLoop]: Abstraction has 2048 states and 4306 transitions. [2021-07-14 00:18:15,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 4306 transitions. [2021-07-14 00:18:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-14 00:18:15,810 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:15,810 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] [2021-07-14 00:18:15,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 00:18:15,810 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:15,811 INFO L82 PathProgramCache]: Analyzing trace with hash 932867412, now seen corresponding path program 1 times [2021-07-14 00:18:15,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:15,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853596883] [2021-07-14 00:18:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:15,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:15,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:15,863 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:15,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:15,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:15,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:15,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:15,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:15,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:15,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853596883] [2021-07-14 00:18:15,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853596883] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:15,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:15,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:18:15,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726631112] [2021-07-14 00:18:15,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:18:15,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:15,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:18:15,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:18:15,894 INFO L87 Difference]: Start difference. First operand 2048 states and 4306 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:16,003 INFO L93 Difference]: Finished difference Result 2288 states and 5068 transitions. [2021-07-14 00:18:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:18:16,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-07-14 00:18:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:16,009 INFO L225 Difference]: With dead ends: 2288 [2021-07-14 00:18:16,010 INFO L226 Difference]: Without dead ends: 1688 [2021-07-14 00:18:16,010 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-07-14 00:18:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2021-07-14 00:18:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1658 states have (on average 2.209891435464415) internal successors, (3664), 1687 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3664 transitions. [2021-07-14 00:18:16,043 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3664 transitions. Word has length 51 [2021-07-14 00:18:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:16,043 INFO L482 AbstractCegarLoop]: Abstraction has 1688 states and 3664 transitions. [2021-07-14 00:18:16,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3664 transitions. [2021-07-14 00:18:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-14 00:18:16,046 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:16,046 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] [2021-07-14 00:18:16,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 00:18:16,046 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash 271139125, now seen corresponding path program 1 times [2021-07-14 00:18:16,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:16,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401964201] [2021-07-14 00:18:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:16,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,095 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-14 00:18:16,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 00:18:16,104 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:16,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:16,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:16,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:16,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:16,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:16,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401964201] [2021-07-14 00:18:16,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401964201] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:16,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:16,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:18:16,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390586961] [2021-07-14 00:18:16,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:18:16,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:16,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:18:16,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:18:16,140 INFO L87 Difference]: Start difference. First operand 1688 states and 3664 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-07-14 00:18:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:16,254 INFO L93 Difference]: Finished difference Result 2228 states and 4876 transitions. [2021-07-14 00:18:16,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 00:18:16,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2021-07-14 00:18:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:16,258 INFO L225 Difference]: With dead ends: 2228 [2021-07-14 00:18:16,258 INFO L226 Difference]: Without dead ends: 968 [2021-07-14 00:18:16,258 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:18:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-07-14 00:18:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2021-07-14 00:18:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 938 states have (on average 2.192963752665245) internal successors, (2057), 967 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2057 transitions. [2021-07-14 00:18:16,276 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2057 transitions. Word has length 53 [2021-07-14 00:18:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:16,276 INFO L482 AbstractCegarLoop]: Abstraction has 968 states and 2057 transitions. [2021-07-14 00:18:16,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-07-14 00:18:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2057 transitions. [2021-07-14 00:18:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-14 00:18:16,277 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:16,277 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] [2021-07-14 00:18:16,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 00:18:16,278 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:16,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:16,278 INFO L82 PathProgramCache]: Analyzing trace with hash -200732444, now seen corresponding path program 1 times [2021-07-14 00:18:16,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:16,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530798844] [2021-07-14 00:18:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:16,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,321 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:16,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:16,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:16,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:16,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:16,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:16,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530798844] [2021-07-14 00:18:16,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530798844] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:16,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:16,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:16,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173696541] [2021-07-14 00:18:16,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:16,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:16,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:16,353 INFO L87 Difference]: Start difference. First operand 968 states and 2057 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) [2021-07-14 00:18:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:16,465 INFO L93 Difference]: Finished difference Result 1356 states and 3024 transitions. [2021-07-14 00:18:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 00:18:16,466 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 [2021-07-14 00:18:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:16,468 INFO L225 Difference]: With dead ends: 1356 [2021-07-14 00:18:16,468 INFO L226 Difference]: Without dead ends: 672 [2021-07-14 00:18:16,468 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-14 00:18:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-07-14 00:18:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-07-14 00:18:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 652 states have (on average 2.26840490797546) internal successors, (1479), 671 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1479 transitions. [2021-07-14 00:18:16,479 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1479 transitions. Word has length 54 [2021-07-14 00:18:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:16,479 INFO L482 AbstractCegarLoop]: Abstraction has 672 states and 1479 transitions. [2021-07-14 00:18:16,479 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) [2021-07-14 00:18:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1479 transitions. [2021-07-14 00:18:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-14 00:18:16,480 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:16,481 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 00:18:16,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 00:18:16,481 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:16,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:16,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1556691173, now seen corresponding path program 1 times [2021-07-14 00:18:16,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:16,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650072389] [2021-07-14 00:18:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:16,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,542 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:18:16,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:18:16,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:18:16,560 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:18:16,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:16,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:16,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:16,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650072389] [2021-07-14 00:18:16,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650072389] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:16,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:16,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:18:16,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8170681] [2021-07-14 00:18:16,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:18:16,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:18:16,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:18:16,568 INFO L87 Difference]: Start difference. First operand 672 states and 1479 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:16,642 INFO L93 Difference]: Finished difference Result 851 states and 1853 transitions. [2021-07-14 00:18:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:18:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-07-14 00:18:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:16,644 INFO L225 Difference]: With dead ends: 851 [2021-07-14 00:18:16,645 INFO L226 Difference]: Without dead ends: 615 [2021-07-14 00:18:16,645 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-07-14 00:18:16,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-07-14 00:18:16,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 595 states have (on average 2.2890756302521007) internal successors, (1362), 614 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1362 transitions. [2021-07-14 00:18:16,654 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1362 transitions. Word has length 56 [2021-07-14 00:18:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:16,654 INFO L482 AbstractCegarLoop]: Abstraction has 615 states and 1362 transitions. [2021-07-14 00:18:16,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1362 transitions. [2021-07-14 00:18:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-14 00:18:16,655 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:16,655 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] [2021-07-14 00:18:16,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 00:18:16,656 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:16,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1955925407, now seen corresponding path program 1 times [2021-07-14 00:18:16,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:16,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370896411] [2021-07-14 00:18:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:16,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,689 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:18:16,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:18:16,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:18:16,707 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:18:16,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:16,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:16,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:16,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370896411] [2021-07-14 00:18:16,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370896411] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:16,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:16,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:16,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447443370] [2021-07-14 00:18:16,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:16,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:16,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:16,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:16,716 INFO L87 Difference]: Start difference. First operand 615 states and 1362 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:16,802 INFO L93 Difference]: Finished difference Result 630 states and 1350 transitions. [2021-07-14 00:18:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 00:18:16,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-14 00:18:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:16,804 INFO L225 Difference]: With dead ends: 630 [2021-07-14 00:18:16,804 INFO L226 Difference]: Without dead ends: 428 [2021-07-14 00:18:16,805 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-14 00:18:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-07-14 00:18:16,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-07-14 00:18:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 410 states have (on average 2.2219512195121953) internal successors, (911), 427 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 911 transitions. [2021-07-14 00:18:16,811 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 911 transitions. Word has length 57 [2021-07-14 00:18:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:16,811 INFO L482 AbstractCegarLoop]: Abstraction has 428 states and 911 transitions. [2021-07-14 00:18:16,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 911 transitions. [2021-07-14 00:18:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-14 00:18:16,812 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:16,812 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 00:18:16,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 00:18:16,812 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash -116961335, now seen corresponding path program 1 times [2021-07-14 00:18:16,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:16,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891894100] [2021-07-14 00:18:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:16,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:16,850 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:18:16,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:18:16,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:18:16,869 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:18:16,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:16,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:16,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:16,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:16,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891894100] [2021-07-14 00:18:16,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891894100] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:16,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:16,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:18:16,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685443392] [2021-07-14 00:18:16,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:18:16,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:16,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:18:16,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:18:16,879 INFO L87 Difference]: Start difference. First operand 428 states and 911 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:16,976 INFO L93 Difference]: Finished difference Result 320 states and 621 transitions. [2021-07-14 00:18:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 00:18:16,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-07-14 00:18:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:16,977 INFO L225 Difference]: With dead ends: 320 [2021-07-14 00:18:16,977 INFO L226 Difference]: Without dead ends: 203 [2021-07-14 00:18:16,977 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:18:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-07-14 00:18:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-07-14 00:18:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 194 states have (on average 1.7989690721649485) internal successors, (349), 202 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 349 transitions. [2021-07-14 00:18:16,980 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 349 transitions. Word has length 58 [2021-07-14 00:18:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:16,981 INFO L482 AbstractCegarLoop]: Abstraction has 203 states and 349 transitions. [2021-07-14 00:18:16,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 349 transitions. [2021-07-14 00:18:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-14 00:18:16,981 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:18:16,981 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 00:18:16,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 00:18:16,981 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:18:16,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:18:16,982 INFO L82 PathProgramCache]: Analyzing trace with hash 546878090, now seen corresponding path program 1 times [2021-07-14 00:18:16,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:18:16,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966294767] [2021-07-14 00:18:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:18:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:18:17,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:17,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:17,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:17,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:17,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:17,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:18:17,009 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:18:17,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:18:17,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:17,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:17,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:18:17,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:18:17,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:18:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:18:17,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:18:17,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966294767] [2021-07-14 00:18:17,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966294767] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:18:17,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:18:17,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:18:17,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911562732] [2021-07-14 00:18:17,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:18:17,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:18:17,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:18:17,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:18:17,036 INFO L87 Difference]: Start difference. First operand 203 states and 349 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) [2021-07-14 00:18:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:18:17,082 INFO L93 Difference]: Finished difference Result 167 states and 289 transitions. [2021-07-14 00:18:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 00:18:17,082 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 [2021-07-14 00:18:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:18:17,082 INFO L225 Difference]: With dead ends: 167 [2021-07-14 00:18:17,082 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 00:18:17,083 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:18:17,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 00:18:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 00:18:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:18:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 00:18:17,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-07-14 00:18:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:18:17,083 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 00:18:17,083 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) [2021-07-14 00:18:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 00:18:17,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 00:18:17,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 00:18:17,085 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 00:18:17,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 12:18:17 BasicIcfg [2021-07-14 00:18:17,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 00:18:17,087 INFO L168 Benchmark]: Toolchain (without parser) took 2972.52 ms. Allocated memory was 237.0 MB in the beginning and 361.8 MB in the end (delta: 124.8 MB). Free memory was 199.7 MB in the beginning and 170.1 MB in the end (delta: 29.6 MB). Peak memory consumption was 155.3 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:17,087 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 237.0 MB. Free memory was 217.5 MB in the beginning and 217.4 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 00:18:17,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.99 ms. Allocated memory is still 237.0 MB. Free memory was 199.6 MB in the beginning and 208.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:17,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.76 ms. Allocated memory is still 237.0 MB. Free memory was 208.9 MB in the beginning and 207.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:17,088 INFO L168 Benchmark]: Boogie Preprocessor took 25.18 ms. Allocated memory is still 237.0 MB. Free memory was 207.3 MB in the beginning and 205.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:17,088 INFO L168 Benchmark]: RCFGBuilder took 345.17 ms. Allocated memory is still 237.0 MB. Free memory was 205.7 MB in the beginning and 181.1 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:17,088 INFO L168 Benchmark]: TraceAbstraction took 2161.00 ms. Allocated memory was 237.0 MB in the beginning and 361.8 MB in the end (delta: 124.8 MB). Free memory was 180.6 MB in the beginning and 170.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 135.8 MB. Max. memory is 8.0 GB. [2021-07-14 00:18:17,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 237.0 MB. Free memory was 217.5 MB in the beginning and 217.4 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 390.99 ms. Allocated memory is still 237.0 MB. Free memory was 199.6 MB in the beginning and 208.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.76 ms. Allocated memory is still 237.0 MB. Free memory was 208.9 MB in the beginning and 207.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.18 ms. Allocated memory is still 237.0 MB. Free memory was 207.3 MB in the beginning and 205.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 345.17 ms. Allocated memory is still 237.0 MB. Free memory was 205.7 MB in the beginning and 181.1 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2161.00 ms. Allocated memory was 237.0 MB in the beginning and 361.8 MB in the end (delta: 124.8 MB). Free memory was 180.6 MB in the beginning and 170.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 135.8 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: 15504, positive: 15015, positive conditional: 15015, positive unconditional: 0, negative: 489, negative conditional: 489, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15435, positive: 15015, positive conditional: 0, positive unconditional: 15015, negative: 420, negative conditional: 0, negative unconditional: 420, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 616, positive: 602, positive conditional: 0, positive unconditional: 602, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 616, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15435, positive: 14413, positive conditional: 0, positive unconditional: 14413, negative: 406, negative conditional: 0, negative unconditional: 406, unknown: 616, unknown conditional: 0, unknown unconditional: 616] , Statistics on independence cache: Total cache size (in pairs): 616, Positive cache size: 602, Positive conditional cache size: 0, Positive unconditional cache size: 602, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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: 2098.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 30.7ms, AutomataDifference: 812.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 332.1ms, PartialOrderReductionTime: 322.7ms, HoareTripleCheckerStatistics: 697 SDtfs, 925 SDslu, 2158 SDs, 0 SdLazy, 278 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 149.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 694.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4775occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 147.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.3ms SsaConstructionTime, 98.7ms SatisfiabilityAnalysisTime, 556.1ms InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1210 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...