/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:18:51,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:18:51,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:18:51,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:18:51,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 17:18:51,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 17:18:51,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 17:18:51,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 17:18:51,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 17:18:51,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 17:18:51,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 17:18:51,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 17:18:51,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 17:18:51,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 17:18:51,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 17:18:51,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 17:18:51,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 17:18:51,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:18:51,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:18:51,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:18:51,331 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.epf [2021-06-12 17:18:51,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:18:51,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:18:51,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:18:51,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:18:51,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:18:51,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:18:51,367 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:18:51,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:18:51,367 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:18:51,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:18:51,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:18:51,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:18:51,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:18:51,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:18:51,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:18:51,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:18:51,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:18:51,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:18:51,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:18:51,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:18:51,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:18:51,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:18:51,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:18:51,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:18:51,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:18:51,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:18:51,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:18:51,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:18:51,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:18:51,371 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:18:51,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:18:51,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:18:51,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:18:51,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:18:51,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:18:51,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:18:51,664 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:18:51,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-06-12 17:18:51,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0979c67/8f24a2c7ad81441b8add2abf447bd763/FLAG14bf6c075 [2021-06-12 17:18:52,305 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:18:52,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-06-12 17:18:52,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0979c67/8f24a2c7ad81441b8add2abf447bd763/FLAG14bf6c075 [2021-06-12 17:18:52,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0979c67/8f24a2c7ad81441b8add2abf447bd763 [2021-06-12 17:18:52,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:18:52,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:18:52,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:18:52,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:18:52,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:18:52,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:18:52" (1/1) ... [2021-06-12 17:18:52,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c768fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:52, skipping insertion in model container [2021-06-12 17:18:52,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:18:52" (1/1) ... [2021-06-12 17:18:52,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:18:52,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:18:52,879 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_tso.opt.i[949,962] [2021-06-12 17:18:53,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:18:53,049 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:18:53,059 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_tso.opt.i[949,962] [2021-06-12 17:18:53,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:18:53,167 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:18:53,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53 WrapperNode [2021-06-12 17:18:53,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:18:53,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:18:53,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:18:53,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:18:53,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:18:53,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:18:53,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:18:53,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:18:53,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... [2021-06-12 17:18:53,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:18:53,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:18:53,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:18:53,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:18:53,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:18:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:18:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:18:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:18:53,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:18:53,347 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:18:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:18:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:18:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:18:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:18:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:18:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:18:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:18:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:18:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:18:53,355 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:18:53,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:18:53,682 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:18:53,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:18:53 BoogieIcfgContainer [2021-06-12 17:18:53,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:18:53,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:18:53,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:18:53,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:18:53,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:18:52" (1/3) ... [2021-06-12 17:18:53,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b72fc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:18:53, skipping insertion in model container [2021-06-12 17:18:53,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:18:53" (2/3) ... [2021-06-12 17:18:53,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b72fc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:18:53, skipping insertion in model container [2021-06-12 17:18:53,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:18:53" (3/3) ... [2021-06-12 17:18:53,693 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2021-06-12 17:18:53,698 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:18:53,698 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:18:53,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:18:53,699 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:18:53,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,749 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,749 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,749 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,749 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,749 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,749 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,749 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,750 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,750 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,753 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,753 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,755 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,760 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,760 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,760 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,764 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,779 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:18:53,784 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:18:53,802 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:18:53,826 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:18:53,826 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:18:53,826 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:18:53,826 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:18:53,826 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:18:53,826 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:18:53,826 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:18:53,826 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:18:53,840 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-12 17:18:54,239 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-12 17:18:54,296 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:18:54,297 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:18:54,297 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:18:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:18:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1924556435, now seen corresponding path program 1 times [2021-06-12 17:18:54,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:18:54,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733924669] [2021-06-12 17:18:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:18:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:18:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:18:54,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:18:54,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733924669] [2021-06-12 17:18:54,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733924669] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:18:54,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:18:54,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:18:54,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694930894] [2021-06-12 17:18:54,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:18:54,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:18:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:18:54,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:18:54,753 INFO L87 Difference]: Start difference. First operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:18:55,053 INFO L93 Difference]: Finished difference Result 10487 states and 36117 transitions. [2021-06-12 17:18:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:18:55,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-12 17:18:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:18:55,092 INFO L225 Difference]: With dead ends: 10487 [2021-06-12 17:18:55,092 INFO L226 Difference]: Without dead ends: 3977 [2021-06-12 17:18:55,093 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 133.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:18:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-12 17:18:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2021-06-12 17:18:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3976 states have (on average 3.358148893360161) internal successors, (13352), 3976 states have internal predecessors, (13352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 13352 transitions. [2021-06-12 17:18:55,303 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 13352 transitions. Word has length 49 [2021-06-12 17:18:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:18:55,307 INFO L482 AbstractCegarLoop]: Abstraction has 3977 states and 13352 transitions. [2021-06-12 17:18:55,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:55,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 13352 transitions. [2021-06-12 17:18:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:18:55,322 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:18:55,323 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:18:55,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:18:55,323 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:18:55,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:18:55,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2063890066, now seen corresponding path program 1 times [2021-06-12 17:18:55,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:18:55,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261495730] [2021-06-12 17:18:55,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:18:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:18:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:18:55,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:18:55,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261495730] [2021-06-12 17:18:55,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261495730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:18:55,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:18:55,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:18:55,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615950201] [2021-06-12 17:18:55,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:18:55,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:18:55,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:18:55,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:18:55,524 INFO L87 Difference]: Start difference. First operand 3977 states and 13352 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:18:55,731 INFO L93 Difference]: Finished difference Result 5237 states and 17450 transitions. [2021-06-12 17:18:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:18:55,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-12 17:18:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:18:55,747 INFO L225 Difference]: With dead ends: 5237 [2021-06-12 17:18:55,747 INFO L226 Difference]: Without dead ends: 2472 [2021-06-12 17:18:55,748 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 142.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:18:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-06-12 17:18:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2472. [2021-06-12 17:18:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2471 states have (on average 3.2598138405503843) internal successors, (8055), 2471 states have internal predecessors, (8055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 8055 transitions. [2021-06-12 17:18:55,831 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 8055 transitions. Word has length 51 [2021-06-12 17:18:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:18:55,832 INFO L482 AbstractCegarLoop]: Abstraction has 2472 states and 8055 transitions. [2021-06-12 17:18:55,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 8055 transitions. [2021-06-12 17:18:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:18:55,841 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:18:55,841 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:18:55,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:18:55,842 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:18:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:18:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 985460192, now seen corresponding path program 1 times [2021-06-12 17:18:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:18:55,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375412676] [2021-06-12 17:18:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:18:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:18:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:18:56,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:18:56,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375412676] [2021-06-12 17:18:56,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375412676] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:18:56,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:18:56,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:18:56,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134700728] [2021-06-12 17:18:56,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:18:56,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:18:56,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:18:56,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:18:56,019 INFO L87 Difference]: Start difference. First operand 2472 states and 8055 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:18:56,191 INFO L93 Difference]: Finished difference Result 3672 states and 11923 transitions. [2021-06-12 17:18:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:18:56,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-12 17:18:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:18:56,202 INFO L225 Difference]: With dead ends: 3672 [2021-06-12 17:18:56,202 INFO L226 Difference]: Without dead ends: 1752 [2021-06-12 17:18:56,202 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 146.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:18:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-06-12 17:18:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1752. [2021-06-12 17:18:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 3.1427755568246716) internal successors, (5503), 1751 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5503 transitions. [2021-06-12 17:18:56,250 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5503 transitions. Word has length 54 [2021-06-12 17:18:56,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:18:56,252 INFO L482 AbstractCegarLoop]: Abstraction has 1752 states and 5503 transitions. [2021-06-12 17:18:56,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5503 transitions. [2021-06-12 17:18:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-12 17:18:56,257 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:18:56,257 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:18:56,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:18:56,257 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:18:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:18:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1324526849, now seen corresponding path program 1 times [2021-06-12 17:18:56,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:18:56,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959102251] [2021-06-12 17:18:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:18:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:18:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:18:56,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:18:56,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959102251] [2021-06-12 17:18:56,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959102251] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:18:56,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:18:56,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:18:56,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620548883] [2021-06-12 17:18:56,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:18:56,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:18:56,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:18:56,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:18:56,389 INFO L87 Difference]: Start difference. First operand 1752 states and 5503 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) [2021-06-12 17:18:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:18:56,495 INFO L93 Difference]: Finished difference Result 2226 states and 6936 transitions. [2021-06-12 17:18:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:18:56,496 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 [2021-06-12 17:18:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:18:56,505 INFO L225 Difference]: With dead ends: 2226 [2021-06-12 17:18:56,506 INFO L226 Difference]: Without dead ends: 1650 [2021-06-12 17:18:56,506 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:18:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-06-12 17:18:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-06-12 17:18:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1649 states have (on average 3.12310491206792) internal successors, (5150), 1649 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 5150 transitions. [2021-06-12 17:18:56,578 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 5150 transitions. Word has length 56 [2021-06-12 17:18:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:18:56,580 INFO L482 AbstractCegarLoop]: Abstraction has 1650 states and 5150 transitions. [2021-06-12 17:18:56,580 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) [2021-06-12 17:18:56,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 5150 transitions. [2021-06-12 17:18:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:18:56,585 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:18:56,585 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:18:56,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:18:56,589 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:18:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:18:56,591 INFO L82 PathProgramCache]: Analyzing trace with hash -213964401, now seen corresponding path program 1 times [2021-06-12 17:18:56,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:18:56,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657486039] [2021-06-12 17:18:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:18:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:18:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:18:56,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:18:56,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657486039] [2021-06-12 17:18:56,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657486039] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:18:56,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:18:56,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:18:56,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114798423] [2021-06-12 17:18:56,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:18:56,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:18:56,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:18:56,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:18:56,720 INFO L87 Difference]: Start difference. First operand 1650 states and 5150 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:18:56,837 INFO L93 Difference]: Finished difference Result 1839 states and 5627 transitions. [2021-06-12 17:18:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:18:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-12 17:18:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:18:56,846 INFO L225 Difference]: With dead ends: 1839 [2021-06-12 17:18:56,846 INFO L226 Difference]: Without dead ends: 1335 [2021-06-12 17:18:56,847 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:18:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-06-12 17:18:56,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2021-06-12 17:18:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1334 states have (on average 3.028485757121439) internal successors, (4040), 1334 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 4040 transitions. [2021-06-12 17:18:56,880 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 4040 transitions. Word has length 57 [2021-06-12 17:18:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:18:56,880 INFO L482 AbstractCegarLoop]: Abstraction has 1335 states and 4040 transitions. [2021-06-12 17:18:56,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 4040 transitions. [2021-06-12 17:18:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:18:56,884 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:18:56,884 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:18:56,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:18:56,884 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:18:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:18:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash -92312029, now seen corresponding path program 1 times [2021-06-12 17:18:56,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:18:56,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168196020] [2021-06-12 17:18:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:18:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:18:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:18:57,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:18:57,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168196020] [2021-06-12 17:18:57,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168196020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:18:57,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:18:57,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:18:57,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055836439] [2021-06-12 17:18:57,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:18:57,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:18:57,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:18:57,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:18:57,014 INFO L87 Difference]: Start difference. First operand 1335 states and 4040 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) [2021-06-12 17:18:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:18:57,177 INFO L93 Difference]: Finished difference Result 1173 states and 3437 transitions. [2021-06-12 17:18:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:18:57,177 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 [2021-06-12 17:18:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:18:57,181 INFO L225 Difference]: With dead ends: 1173 [2021-06-12 17:18:57,182 INFO L226 Difference]: Without dead ends: 849 [2021-06-12 17:18:57,182 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:18:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-06-12 17:18:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-06-12 17:18:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.8537735849056602) internal successors, (2420), 848 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2420 transitions. [2021-06-12 17:18:57,203 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2420 transitions. Word has length 58 [2021-06-12 17:18:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:18:57,203 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 2420 transitions. [2021-06-12 17:18:57,204 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) [2021-06-12 17:18:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2420 transitions. [2021-06-12 17:18:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-12 17:18:57,206 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:18:57,207 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:18:57,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:18:57,207 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:18:57,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:18:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash 747863938, now seen corresponding path program 1 times [2021-06-12 17:18:57,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:18:57,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555777213] [2021-06-12 17:18:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:18:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:18:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:18:57,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:18:57,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555777213] [2021-06-12 17:18:57,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555777213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:18:57,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:18:57,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:18:57,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184267668] [2021-06-12 17:18:57,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:18:57,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:18:57,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:18:57,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:18:57,329 INFO L87 Difference]: Start difference. First operand 849 states and 2420 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) [2021-06-12 17:18:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:18:57,406 INFO L93 Difference]: Finished difference Result 795 states and 2258 transitions. [2021-06-12 17:18:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:18:57,406 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 [2021-06-12 17:18:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:18:57,407 INFO L225 Difference]: With dead ends: 795 [2021-06-12 17:18:57,407 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:18:57,407 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:18:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:18:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:18:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:18:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:18:57,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-12 17:18:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:18:57,408 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:18:57,408 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) [2021-06-12 17:18:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:18:57,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:18:57,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:18:57,410 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:18:57,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:18:57 BasicIcfg [2021-06-12 17:18:57,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:18:57,413 INFO L168 Benchmark]: Toolchain (without parser) took 4816.45 ms. Allocated memory was 251.7 MB in the beginning and 370.1 MB in the end (delta: 118.5 MB). Free memory was 213.5 MB in the beginning and 148.7 MB in the end (delta: 64.8 MB). Peak memory consumption was 184.8 MB. Max. memory is 8.0 GB. [2021-06-12 17:18:57,414 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 251.7 MB. Free memory is still 231.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:18:57,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.65 ms. Allocated memory is still 251.7 MB. Free memory was 213.4 MB in the beginning and 214.1 MB in the end (delta: -627.4 kB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-06-12 17:18:57,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.19 ms. Allocated memory is still 251.7 MB. Free memory was 214.1 MB in the beginning and 212.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:18:57,415 INFO L168 Benchmark]: Boogie Preprocessor took 37.74 ms. Allocated memory is still 251.7 MB. Free memory was 212.0 MB in the beginning and 210.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:18:57,415 INFO L168 Benchmark]: RCFGBuilder took 415.81 ms. Allocated memory is still 251.7 MB. Free memory was 210.3 MB in the beginning and 229.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2021-06-12 17:18:57,415 INFO L168 Benchmark]: TraceAbstraction took 3727.89 ms. Allocated memory was 251.7 MB in the beginning and 370.1 MB in the end (delta: 118.5 MB). Free memory was 229.4 MB in the beginning and 148.7 MB in the end (delta: 80.7 MB). Peak memory consumption was 199.2 MB. Max. memory is 8.0 GB. [2021-06-12 17:18:57,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 251.7 MB. Free memory is still 231.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 571.65 ms. Allocated memory is still 251.7 MB. Free memory was 213.4 MB in the beginning and 214.1 MB in the end (delta: -627.4 kB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.19 ms. Allocated memory is still 251.7 MB. Free memory was 214.1 MB in the beginning and 212.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.74 ms. Allocated memory is still 251.7 MB. Free memory was 212.0 MB in the beginning and 210.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 415.81 ms. Allocated memory is still 251.7 MB. Free memory was 210.3 MB in the beginning and 229.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3727.89 ms. Allocated memory was 251.7 MB in the beginning and 370.1 MB in the end (delta: 118.5 MB). Free memory was 229.4 MB in the beginning and 148.7 MB in the end (delta: 80.7 MB). Peak memory consumption was 199.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 3585.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 93.2ms, AutomataDifference: 1283.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 413.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 671 SDtfs, 1034 SDslu, 2217 SDs, 0 SdLazy, 284 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 209.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 823.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8009occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 455.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.2ms SsaConstructionTime, 234.7ms SatisfiabilityAnalysisTime, 818.1ms InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 378 ConstructedInterpolants, 0 QuantifiedInterpolants, 1160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...