/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:34:32,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:34:32,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:34:32,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:34:32,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:34:32,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:34:32,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:34:32,606 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-Separate.epf [2021-05-21 23:34:32,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:34:32,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:34:32,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:34:32,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:34:32,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:34:32,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:34:32,622 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:34:32,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:34:32,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:34:32,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:34:32,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:34:32,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:34:32,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:34:32,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:34:32,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:34:32,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:34:32,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:34:32,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:34:32,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:34:32,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:34:32,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:34:32,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:34:32,625 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:34:32,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:34:32,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:34:32,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:34:32,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:34:32,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:34:32,866 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:34:32,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-05-21 23:34:32,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804436634/c28ea23dc5564cafa51831798a4fe187/FLAG9e7548ab8 [2021-05-21 23:34:33,344 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:34:33,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-05-21 23:34:33,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804436634/c28ea23dc5564cafa51831798a4fe187/FLAG9e7548ab8 [2021-05-21 23:34:33,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804436634/c28ea23dc5564cafa51831798a4fe187 [2021-05-21 23:34:33,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:34:33,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:34:33,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:34:33,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:34:33,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:34:33,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57254a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33, skipping insertion in model container [2021-05-21 23:34:33,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:34:33,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:34:33,569 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/safe004_tso.opt.i[949,962] [2021-05-21 23:34:33,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:34:33,697 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:34:33,704 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/safe004_tso.opt.i[949,962] [2021-05-21 23:34:33,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:34:33,764 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:34:33,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33 WrapperNode [2021-05-21 23:34:33,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:34:33,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:34:33,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:34:33,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:34:33,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:34:33,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:34:33,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:34:33,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:34:33,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (1/1) ... [2021-05-21 23:34:33,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:34:33,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:34:33,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:34:33,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:34:33,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (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 [2021-05-21 23:34:33,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:34:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:34:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:34:33,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:34:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:34:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:34:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:34:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:34:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:34:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:34:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:34:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:34:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:34:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:34:33,869 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 23:34:34,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:34:34,194 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:34:34,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:34:34 BoogieIcfgContainer [2021-05-21 23:34:34,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:34:34,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:34:34,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:34:34,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:34:34,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:34:33" (1/3) ... [2021-05-21 23:34:34,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db6b293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:34:34, skipping insertion in model container [2021-05-21 23:34:34,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:33" (2/3) ... [2021-05-21 23:34:34,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db6b293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:34:34, skipping insertion in model container [2021-05-21 23:34:34,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:34:34" (3/3) ... [2021-05-21 23:34:34,202 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2021-05-21 23:34:34,208 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:34:34,208 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:34:34,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:34:34,208 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:34:34,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,246 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,248 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,248 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,248 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,248 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:34,258 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:34:34,272 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:34:34,288 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:34:34,288 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:34:34,288 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:34:34,288 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:34:34,288 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:34:34,288 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:34:34,289 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:34:34,289 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:34:34,295 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 23:34:34,663 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:34:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:34:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 23:34:34,720 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:34,720 INFO L521 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] [2021-05-21 23:34:34,720 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:34,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1833038261, now seen corresponding path program 1 times [2021-05-21 23:34:34,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:34,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950084929] [2021-05-21 23:34:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:35,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:35,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950084929] [2021-05-21 23:34:35,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950084929] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:35,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:35,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:34:35,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844959148] [2021-05-21 23:34:35,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:34:35,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:35,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:34:35,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:34:35,068 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-05-21 23:34:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:35,271 INFO L93 Difference]: Finished difference Result 11438 states and 39543 transitions. [2021-05-21 23:34:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:34:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 48 [2021-05-21 23:34:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:35,306 INFO L225 Difference]: With dead ends: 11438 [2021-05-21 23:34:35,306 INFO L226 Difference]: Without dead ends: 4333 [2021-05-21 23:34:35,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:34:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2021-05-21 23:34:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4333. [2021-05-21 23:34:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4333 states, 4332 states have (on average 3.3642659279778395) internal successors, (14574), 4332 states have internal predecessors, (14574), 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) [2021-05-21 23:34:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 14574 transitions. [2021-05-21 23:34:35,525 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 14574 transitions. Word has length 48 [2021-05-21 23:34:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:35,528 INFO L482 AbstractCegarLoop]: Abstraction has 4333 states and 14574 transitions. [2021-05-21 23:34:35,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-05-21 23:34:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 14574 transitions. [2021-05-21 23:34:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 23:34:35,542 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:35,542 INFO L521 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] [2021-05-21 23:34:35,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:34:35,542 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:35,545 INFO L82 PathProgramCache]: Analyzing trace with hash -875734650, now seen corresponding path program 1 times [2021-05-21 23:34:35,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:35,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429826989] [2021-05-21 23:34:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:35,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:35,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429826989] [2021-05-21 23:34:35,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429826989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:35,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:35,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:34:35,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536592655] [2021-05-21 23:34:35,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:34:35,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:34:35,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:34:35,764 INFO L87 Difference]: Start difference. First operand 4333 states and 14574 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2021-05-21 23:34:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:36,058 INFO L93 Difference]: Finished difference Result 7645 states and 25634 transitions. [2021-05-21 23:34:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 23:34:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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 [2021-05-21 23:34:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:36,068 INFO L225 Difference]: With dead ends: 7645 [2021-05-21 23:34:36,068 INFO L226 Difference]: Without dead ends: 2422 [2021-05-21 23:34:36,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 273.0ms TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-05-21 23:34:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-05-21 23:34:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2230. [2021-05-21 23:34:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2229 states have (on average 3.0300583221175414) internal successors, (6754), 2229 states have internal predecessors, (6754), 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) [2021-05-21 23:34:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 6754 transitions. [2021-05-21 23:34:36,118 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 6754 transitions. Word has length 51 [2021-05-21 23:34:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:36,118 INFO L482 AbstractCegarLoop]: Abstraction has 2230 states and 6754 transitions. [2021-05-21 23:34:36,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2021-05-21 23:34:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 6754 transitions. [2021-05-21 23:34:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 23:34:36,123 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:36,123 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:34:36,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:34:36,124 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:36,124 INFO L82 PathProgramCache]: Analyzing trace with hash -945022826, now seen corresponding path program 1 times [2021-05-21 23:34:36,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:36,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984193037] [2021-05-21 23:34:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:36,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:36,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984193037] [2021-05-21 23:34:36,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984193037] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:36,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:36,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:34:36,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916121563] [2021-05-21 23:34:36,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:34:36,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:36,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:34:36,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:34:36,226 INFO L87 Difference]: Start difference. First operand 2230 states and 6754 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:34:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:36,342 INFO L93 Difference]: Finished difference Result 2510 states and 7588 transitions. [2021-05-21 23:34:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:34:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-05-21 23:34:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:36,370 INFO L225 Difference]: With dead ends: 2510 [2021-05-21 23:34:36,370 INFO L226 Difference]: Without dead ends: 1285 [2021-05-21 23:34:36,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 23:34:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-05-21 23:34:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2021-05-21 23:34:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 2.9883177570093458) internal successors, (3837), 1284 states have internal predecessors, (3837), 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) [2021-05-21 23:34:36,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 3837 transitions. [2021-05-21 23:34:36,391 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 3837 transitions. Word has length 55 [2021-05-21 23:34:36,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:36,392 INFO L482 AbstractCegarLoop]: Abstraction has 1285 states and 3837 transitions. [2021-05-21 23:34:36,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:34:36,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 3837 transitions. [2021-05-21 23:34:36,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-21 23:34:36,394 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:36,394 INFO L521 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] [2021-05-21 23:34:36,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:34:36,395 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:36,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2078823676, now seen corresponding path program 1 times [2021-05-21 23:34:36,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:36,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530767906] [2021-05-21 23:34:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:36,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:36,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530767906] [2021-05-21 23:34:36,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530767906] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:36,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:36,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:34:36,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455095457] [2021-05-21 23:34:36,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:34:36,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:34:36,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:34:36,491 INFO L87 Difference]: Start difference. First operand 1285 states and 3837 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) [2021-05-21 23:34:36,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:36,560 INFO L93 Difference]: Finished difference Result 1486 states and 4388 transitions. [2021-05-21 23:34:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:34:36,561 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 [2021-05-21 23:34:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:36,565 INFO L225 Difference]: With dead ends: 1486 [2021-05-21 23:34:36,565 INFO L226 Difference]: Without dead ends: 1150 [2021-05-21 23:34:36,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:34:36,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-05-21 23:34:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2021-05-21 23:34:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 2.947780678851175) internal successors, (3387), 1149 states have internal predecessors, (3387), 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) [2021-05-21 23:34:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3387 transitions. [2021-05-21 23:34:36,583 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3387 transitions. Word has length 56 [2021-05-21 23:34:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:36,584 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 3387 transitions. [2021-05-21 23:34:36,584 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) [2021-05-21 23:34:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3387 transitions. [2021-05-21 23:34:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 23:34:36,586 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:36,587 INFO L521 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] [2021-05-21 23:34:36,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:34:36,589 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:36,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1611481061, now seen corresponding path program 1 times [2021-05-21 23:34:36,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:36,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900168133] [2021-05-21 23:34:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:36,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:36,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900168133] [2021-05-21 23:34:36,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900168133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:36,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:36,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:34:36,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335344257] [2021-05-21 23:34:36,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:34:36,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:36,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:34:36,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:34:36,688 INFO L87 Difference]: Start difference. First operand 1150 states and 3387 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) [2021-05-21 23:34:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:36,784 INFO L93 Difference]: Finished difference Result 1042 states and 2967 transitions. [2021-05-21 23:34:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:34:36,785 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 [2021-05-21 23:34:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:36,789 INFO L225 Difference]: With dead ends: 1042 [2021-05-21 23:34:36,789 INFO L226 Difference]: Without dead ends: 790 [2021-05-21 23:34:36,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 79.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:34:36,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-05-21 23:34:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2021-05-21 23:34:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.790874524714829) internal successors, (2202), 789 states have internal predecessors, (2202), 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) [2021-05-21 23:34:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2202 transitions. [2021-05-21 23:34:36,802 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2202 transitions. Word has length 57 [2021-05-21 23:34:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:36,802 INFO L482 AbstractCegarLoop]: Abstraction has 790 states and 2202 transitions. [2021-05-21 23:34:36,803 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) [2021-05-21 23:34:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2202 transitions. [2021-05-21 23:34:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-21 23:34:36,804 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:36,804 INFO L521 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] [2021-05-21 23:34:36,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:34:36,804 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:36,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2015620850, now seen corresponding path program 1 times [2021-05-21 23:34:36,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:36,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582745475] [2021-05-21 23:34:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:36,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:36,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582745475] [2021-05-21 23:34:36,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582745475] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:36,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:36,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:34:36,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706439418] [2021-05-21 23:34:36,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:34:36,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:34:36,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:34:36,923 INFO L87 Difference]: Start difference. First operand 790 states and 2202 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) [2021-05-21 23:34:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:36,984 INFO L93 Difference]: Finished difference Result 493 states and 1311 transitions. [2021-05-21 23:34:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 23:34:36,984 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 [2021-05-21 23:34:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:36,984 INFO L225 Difference]: With dead ends: 493 [2021-05-21 23:34:36,984 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:34:36,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:34:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:34:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:34:36,985 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) [2021-05-21 23:34:36,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:34:36,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-05-21 23:34:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:36,985 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:34:36,985 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) [2021-05-21 23:34:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:34:36,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:34:36,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:34:36,986 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:34:36,987 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:34:36,988 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:34:36,988 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:34:36,988 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:34:36,988 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:34:36,988 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:34:36,988 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:34:36,988 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:34:36,988 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:34:36,992 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 23:34:37,257 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:34:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 23:34:37,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:34:37,302 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:34:37,302 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:34:37,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:34:37 BasicIcfg [2021-05-21 23:34:37,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:34:37,305 INFO L168 Benchmark]: Toolchain (without parser) took 3931.22 ms. Allocated memory was 348.1 MB in the beginning and 838.9 MB in the end (delta: 490.7 MB). Free memory was 311.1 MB in the beginning and 606.3 MB in the end (delta: -295.1 MB). Peak memory consumption was 198.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:37,305 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:34:37,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.64 ms. Allocated memory is still 348.1 MB. Free memory was 310.9 MB in the beginning and 310.1 MB in the end (delta: 813.9 kB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:37,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.18 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 308.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:37,308 INFO L168 Benchmark]: Boogie Preprocessor took 20.21 ms. Allocated memory is still 348.1 MB. Free memory was 308.0 MB in the beginning and 306.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:37,308 INFO L168 Benchmark]: RCFGBuilder took 380.03 ms. Allocated memory is still 348.1 MB. Free memory was 306.9 MB in the beginning and 281.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:37,309 INFO L168 Benchmark]: TraceAbstraction took 3105.52 ms. Allocated memory was 348.1 MB in the beginning and 838.9 MB in the end (delta: 490.7 MB). Free memory was 281.8 MB in the beginning and 606.3 MB in the end (delta: -324.5 MB). Peak memory consumption was 168.3 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:37,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 387.64 ms. Allocated memory is still 348.1 MB. Free memory was 310.9 MB in the beginning and 310.1 MB in the end (delta: 813.9 kB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.18 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 308.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.21 ms. Allocated memory is still 348.1 MB. Free memory was 308.0 MB in the beginning and 306.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 380.03 ms. Allocated memory is still 348.1 MB. Free memory was 306.9 MB in the beginning and 281.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3105.52 ms. Allocated memory was 348.1 MB in the beginning and 838.9 MB in the end (delta: 490.7 MB). Free memory was 281.8 MB in the beginning and 606.3 MB in the end (delta: -324.5 MB). Peak memory consumption was 168.3 MB. Max. memory is 16.0 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 with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2699.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 79.1ms, AutomataDifference: 965.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 374.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 615 SDtfs, 937 SDslu, 2040 SDs, 0 SdLazy, 216 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 154.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 691.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 308.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 192 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.6ms SsaConstructionTime, 154.1ms SatisfiabilityAnalysisTime, 604.2ms InterpolantComputationTime, 325 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 1007 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 313.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 44.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 268.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: 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...