/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/safe035_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:39:32,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:39:32,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:39:32,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:39:32,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:39:32,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:39:32,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:39:32,810 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 23:39:32,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:39:32,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:39:32,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:39:32,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:39:32,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:39:32,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:39:32,839 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:39:32,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:39:32,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:39:32,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:39:32,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:39:32,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:39:32,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:39:32,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:39:32,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:39:32,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:39:32,843 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:39:32,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:39:33,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:39:33,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:39:33,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:39:33,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:39:33,075 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:39:33,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2021-05-21 23:39:33,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3668c17/cba411fc085c42fa93077ab9c0e8873a/FLAG15fd8176f [2021-05-21 23:39:33,567 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:39:33,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2021-05-21 23:39:33,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3668c17/cba411fc085c42fa93077ab9c0e8873a/FLAG15fd8176f [2021-05-21 23:39:33,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3668c17/cba411fc085c42fa93077ab9c0e8873a [2021-05-21 23:39:33,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:39:33,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:39:33,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:39:33,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:39:33,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:39:33,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:33,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc3d31b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33, skipping insertion in model container [2021-05-21 23:39:33,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:33,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:39:33,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:39:33,784 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/safe035_rmo.opt.i[949,962] [2021-05-21 23:39:33,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:39:33,902 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:39:33,913 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/safe035_rmo.opt.i[949,962] [2021-05-21 23:39:33,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:39:33,975 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:39:33,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33 WrapperNode [2021-05-21 23:39:33,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:39:33,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:39:33,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:39:33,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:39:33,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:33,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:39:34,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:39:34,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:39:34,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:39:34,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (1/1) ... [2021-05-21 23:39:34,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:39:34,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:39:34,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:39:34,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:39:34,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (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 23:39:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:39:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:39:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:39:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:39:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:39:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:39:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:39:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:39:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:39:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:39:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:39:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:39:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:39:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:39:34,066 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 23:39:34,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:39:34,333 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:39:34,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:39:34 BoogieIcfgContainer [2021-05-21 23:39:34,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:39:34,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:39:34,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:39:34,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:39:34,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:39:33" (1/3) ... [2021-05-21 23:39:34,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490fe2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:39:34, skipping insertion in model container [2021-05-21 23:39:34,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:39:33" (2/3) ... [2021-05-21 23:39:34,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490fe2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:39:34, skipping insertion in model container [2021-05-21 23:39:34,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:39:34" (3/3) ... [2021-05-21 23:39:34,339 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.opt.i [2021-05-21 23:39:34,343 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:39:34,343 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:39:34,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:39:34,344 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:39:34,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,363 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,367 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,367 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,371 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,371 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:39:34,374 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:39:34,388 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:39:34,400 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:39:34,400 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:39:34,400 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:39:34,400 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:39:34,400 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:39:34,400 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:39:34,400 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:39:34,400 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:39:34,406 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:39:34,784 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 23:39:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 23:39:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 23:39:34,844 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:34,845 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] [2021-05-21 23:39:34,845 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:34,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:34,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1593178653, now seen corresponding path program 1 times [2021-05-21 23:39:34,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:34,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998676951] [2021-05-21 23:39:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:35,129 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 23:39:35,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:35,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998676951] [2021-05-21 23:39:35,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998676951] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:35,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:35,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:39:35,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094874178] [2021-05-21 23:39:35,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:39:35,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:35,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:39:35,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:39:35,163 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:39:35,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:35,392 INFO L93 Difference]: Finished difference Result 11439 states and 39544 transitions. [2021-05-21 23:39:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:39:35,394 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 [2021-05-21 23:39:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:35,428 INFO L225 Difference]: With dead ends: 11439 [2021-05-21 23:39:35,429 INFO L226 Difference]: Without dead ends: 4334 [2021-05-21 23:39:35,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2021-05-21 23:39:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4334. [2021-05-21 23:39:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.3637202861758597) internal successors, (14575), 4333 states have internal predecessors, (14575), 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 23:39:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 14575 transitions. [2021-05-21 23:39:35,580 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 14575 transitions. Word has length 49 [2021-05-21 23:39:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:35,581 INFO L482 AbstractCegarLoop]: Abstraction has 4334 states and 14575 transitions. [2021-05-21 23:39:35,581 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) [2021-05-21 23:39:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 14575 transitions. [2021-05-21 23:39:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 23:39:35,588 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:35,588 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] [2021-05-21 23:39:35,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:39:35,588 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:35,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1690028140, now seen corresponding path program 1 times [2021-05-21 23:39:35,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:35,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138378490] [2021-05-21 23:39:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:35,707 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 23:39:35,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:35,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138378490] [2021-05-21 23:39:35,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138378490] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:35,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:35,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:39:35,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086414006] [2021-05-21 23:39:35,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:39:35,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:35,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:39:35,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:39:35,715 INFO L87 Difference]: Start difference. First operand 4334 states and 14575 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 23:39:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:35,851 INFO L93 Difference]: Finished difference Result 6742 states and 22512 transitions. [2021-05-21 23:39:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:39:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2021-05-21 23:39:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:35,865 INFO L225 Difference]: With dead ends: 6742 [2021-05-21 23:39:35,866 INFO L226 Difference]: Without dead ends: 3158 [2021-05-21 23:39:35,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2021-05-21 23:39:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3158. [2021-05-21 23:39:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3157 states have (on average 3.3268926195755464) internal successors, (10503), 3157 states have internal predecessors, (10503), 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 23:39:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 10503 transitions. [2021-05-21 23:39:35,968 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 10503 transitions. Word has length 52 [2021-05-21 23:39:35,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:35,969 INFO L482 AbstractCegarLoop]: Abstraction has 3158 states and 10503 transitions. [2021-05-21 23:39:35,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 23:39:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 10503 transitions. [2021-05-21 23:39:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 23:39:35,977 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:35,977 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] [2021-05-21 23:39:35,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:39:35,977 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:35,983 INFO L82 PathProgramCache]: Analyzing trace with hash 792894823, now seen corresponding path program 1 times [2021-05-21 23:39:35,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:35,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425634733] [2021-05-21 23:39:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:36,079 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 23:39:36,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:36,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425634733] [2021-05-21 23:39:36,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425634733] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:36,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:36,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:39:36,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758026299] [2021-05-21 23:39:36,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:39:36,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:36,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:39:36,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:39:36,081 INFO L87 Difference]: Start difference. First operand 3158 states and 10503 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2021-05-21 23:39:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:36,187 INFO L93 Difference]: Finished difference Result 3962 states and 12986 transitions. [2021-05-21 23:39:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:39:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 [2021-05-21 23:39:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:36,198 INFO L225 Difference]: With dead ends: 3962 [2021-05-21 23:39:36,199 INFO L226 Difference]: Without dead ends: 2870 [2021-05-21 23:39:36,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 73.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:36,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-05-21 23:39:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2021-05-21 23:39:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2869 states have (on average 3.2732659463227605) internal successors, (9391), 2869 states have internal predecessors, (9391), 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 23:39:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 9391 transitions. [2021-05-21 23:39:36,259 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 9391 transitions. Word has length 54 [2021-05-21 23:39:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:36,259 INFO L482 AbstractCegarLoop]: Abstraction has 2870 states and 9391 transitions. [2021-05-21 23:39:36,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2021-05-21 23:39:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 9391 transitions. [2021-05-21 23:39:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 23:39:36,264 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:36,264 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 23:39:36,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:39:36,265 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:36,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:36,265 INFO L82 PathProgramCache]: Analyzing trace with hash -173034250, now seen corresponding path program 1 times [2021-05-21 23:39:36,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:36,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786877177] [2021-05-21 23:39:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:36,366 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 23:39:36,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:36,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786877177] [2021-05-21 23:39:36,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786877177] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:36,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:36,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:39:36,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415965903] [2021-05-21 23:39:36,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:39:36,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:36,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:39:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:39:36,369 INFO L87 Difference]: Start difference. First operand 2870 states and 9391 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 23:39:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:36,485 INFO L93 Difference]: Finished difference Result 2978 states and 9484 transitions. [2021-05-21 23:39:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:39:36,497 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 23:39:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:36,504 INFO L225 Difference]: With dead ends: 2978 [2021-05-21 23:39:36,504 INFO L226 Difference]: Without dead ends: 2078 [2021-05-21 23:39:36,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:39:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-05-21 23:39:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2078. [2021-05-21 23:39:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2077 states have (on average 3.1376986037554166) internal successors, (6517), 2077 states have internal predecessors, (6517), 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 23:39:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 6517 transitions. [2021-05-21 23:39:36,572 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 6517 transitions. Word has length 55 [2021-05-21 23:39:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:36,573 INFO L482 AbstractCegarLoop]: Abstraction has 2078 states and 6517 transitions. [2021-05-21 23:39:36,573 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 23:39:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 6517 transitions. [2021-05-21 23:39:36,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 23:39:36,577 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:36,577 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 23:39:36,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:39:36,579 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:36,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:36,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2002222771, now seen corresponding path program 1 times [2021-05-21 23:39:36,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:36,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769234307] [2021-05-21 23:39:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:39:36,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:36,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769234307] [2021-05-21 23:39:36,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769234307] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:36,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:36,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:39:36,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724310968] [2021-05-21 23:39:36,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:39:36,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:39:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:39:36,674 INFO L87 Difference]: Start difference. First operand 2078 states and 6517 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 23:39:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:36,805 INFO L93 Difference]: Finished difference Result 1718 states and 5254 transitions. [2021-05-21 23:39:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 23:39:36,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 23:39:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:36,810 INFO L225 Difference]: With dead ends: 1718 [2021-05-21 23:39:36,810 INFO L226 Difference]: Without dead ends: 1250 [2021-05-21 23:39:36,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:39:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-05-21 23:39:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2021-05-21 23:39:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.008006405124099) internal successors, (3757), 1249 states have internal predecessors, (3757), 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 23:39:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 3757 transitions. [2021-05-21 23:39:36,828 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 3757 transitions. Word has length 57 [2021-05-21 23:39:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:36,828 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 3757 transitions. [2021-05-21 23:39:36,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 23:39:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 3757 transitions. [2021-05-21 23:39:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:39:36,830 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:36,831 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, 1, 1, 1] [2021-05-21 23:39:36,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:39:36,831 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:36,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2022716047, now seen corresponding path program 1 times [2021-05-21 23:39:36,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:36,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502053551] [2021-05-21 23:39:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:36,909 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 23:39:36,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:36,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502053551] [2021-05-21 23:39:36,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502053551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:36,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:36,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:39:36,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920632454] [2021-05-21 23:39:36,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:39:36,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:36,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:39:36,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:39:36,911 INFO L87 Difference]: Start difference. First operand 1250 states and 3757 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:36,974 INFO L93 Difference]: Finished difference Result 1793 states and 5391 transitions. [2021-05-21 23:39:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:39:36,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 23:39:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:36,978 INFO L225 Difference]: With dead ends: 1793 [2021-05-21 23:39:36,978 INFO L226 Difference]: Without dead ends: 895 [2021-05-21 23:39:36,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-05-21 23:39:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-05-21 23:39:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 2.9217002237136467) internal successors, (2612), 894 states have internal predecessors, (2612), 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 23:39:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2612 transitions. [2021-05-21 23:39:36,991 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2612 transitions. Word has length 61 [2021-05-21 23:39:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:36,991 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 2612 transitions. [2021-05-21 23:39:36,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2612 transitions. [2021-05-21 23:39:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:39:36,993 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:39:36,993 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, 1, 1, 1] [2021-05-21 23:39:36,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:39:36,993 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:39:36,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:39:36,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1946374265, now seen corresponding path program 2 times [2021-05-21 23:39:36,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:39:36,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272084834] [2021-05-21 23:39:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:39:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:39:37,055 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 23:39:37,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:39:37,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272084834] [2021-05-21 23:39:37,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272084834] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:39:37,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:39:37,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:39:37,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563042317] [2021-05-21 23:39:37,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:39:37,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:39:37,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:39:37,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:39:37,057 INFO L87 Difference]: Start difference. First operand 895 states and 2612 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:39:37,110 INFO L93 Difference]: Finished difference Result 841 states and 2450 transitions. [2021-05-21 23:39:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:39:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 23:39:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:39:37,111 INFO L225 Difference]: With dead ends: 841 [2021-05-21 23:39:37,111 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:39:37,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:39:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:39:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:39:37,111 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 23:39:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:39:37,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-05-21 23:39:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:39:37,112 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:39:37,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:39:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:39:37,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:39:37,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 23:39:37,112 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:39:37,114 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:39:37,114 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:39:37,114 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:39:37,114 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:39:37,114 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:39:37,114 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:39:37,114 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:39:37,114 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:39:37,115 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:39:37,116 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:39:37,327 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 23:39:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 23:39:37,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:39:37,369 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:39:37,369 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:39:37,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:39:37 BasicIcfg [2021-05-21 23:39:37,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:39:37,372 INFO L168 Benchmark]: Toolchain (without parser) took 3774.00 ms. Allocated memory was 354.4 MB in the beginning and 494.9 MB in the end (delta: 140.5 MB). Free memory was 316.4 MB in the beginning and 287.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 173.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:37,372 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 354.4 MB. Free memory is still 334.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:39:37,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.17 ms. Allocated memory is still 354.4 MB. Free memory was 316.2 MB in the beginning and 317.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:37,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.08 ms. Allocated memory is still 354.4 MB. Free memory was 317.3 MB in the beginning and 315.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:37,373 INFO L168 Benchmark]: Boogie Preprocessor took 12.92 ms. Allocated memory is still 354.4 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:37,373 INFO L168 Benchmark]: RCFGBuilder took 320.88 ms. Allocated memory is still 354.4 MB. Free memory was 313.2 MB in the beginning and 288.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:37,373 INFO L168 Benchmark]: TraceAbstraction took 3035.51 ms. Allocated memory was 354.4 MB in the beginning and 494.9 MB in the end (delta: 140.5 MB). Free memory was 286.9 MB in the beginning and 287.6 MB in the end (delta: -684.9 kB). Peak memory consumption was 143.0 MB. Max. memory is 16.0 GB. [2021-05-21 23:39:37,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 354.4 MB. Free memory is still 334.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 375.17 ms. Allocated memory is still 354.4 MB. Free memory was 316.2 MB in the beginning and 317.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.08 ms. Allocated memory is still 354.4 MB. Free memory was 317.3 MB in the beginning and 315.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.92 ms. Allocated memory is still 354.4 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 320.88 ms. Allocated memory is still 354.4 MB. Free memory was 313.2 MB in the beginning and 288.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3035.51 ms. Allocated memory was 354.4 MB in the beginning and 494.9 MB in the end (delta: 140.5 MB). Free memory was 286.9 MB in the beginning and 287.6 MB in the end (delta: -684.9 kB). Peak memory consumption was 143.0 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, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2713.9ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 84.2ms, AutomataDifference: 969.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 384.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 725 SDtfs, 1045 SDslu, 2328 SDs, 0 SdLazy, 264 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 645.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 400.9ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 139.4ms SatisfiabilityAnalysisTime, 534.7ms InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 978 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 254.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 40.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 213.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred 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...