/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:53:02,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:53:02,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:53:02,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:53:02,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 19:53:02,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 19:53:02,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 19:53:02,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 19:53:03,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:53:03,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:53:03,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:53:03,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:53:03,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:53:03,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:53:03,003 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:53:03,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:53:03,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:53:03,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:53:03,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:53:03,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:53:03,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:53:03,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:53:03,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:53:03,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:53:03,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:53:03,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:53:03,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:53:03,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:53:03,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:53:03,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:53:03,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:53:03,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:53:03,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:53:03,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:53:03,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:53:03,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:53:03,229 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:53:03,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-05 19:53:03,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799728a91/18282a8d7e4647c4aa1d8685dce3d870/FLAGc60f756fa [2021-06-05 19:53:03,681 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:53:03,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-05 19:53:03,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799728a91/18282a8d7e4647c4aa1d8685dce3d870/FLAGc60f756fa [2021-06-05 19:53:03,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799728a91/18282a8d7e4647c4aa1d8685dce3d870 [2021-06-05 19:53:03,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:53:03,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:53:03,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:53:03,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:53:03,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:53:03,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:53:03" (1/1) ... [2021-06-05 19:53:03,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a0c8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:03, skipping insertion in model container [2021-06-05 19:53:03,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:53:03" (1/1) ... [2021-06-05 19:53:03,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:53:03,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:53:03,899 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/safe015_tso.opt.i[949,962] [2021-06-05 19:53:04,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:53:04,047 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:53:04,055 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/safe015_tso.opt.i[949,962] [2021-06-05 19:53:04,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:53:04,132 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:53:04,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04 WrapperNode [2021-06-05 19:53:04,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:53:04,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:53:04,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:53:04,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:53:04,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:53:04,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:53:04,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:53:04,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:53:04,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... [2021-06-05 19:53:04,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:53:04,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:53:04,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:53:04,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:53:04,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:53:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:53:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:53:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:53:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:53:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:53:04,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:53:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:53:04,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:53:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:53:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:53:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:53:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:53:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:53:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:53:04,236 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:53:04,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:53:04,534 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:53:04,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:53:04 BoogieIcfgContainer [2021-06-05 19:53:04,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:53:04,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:53:04,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:53:04,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:53:04,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:53:03" (1/3) ... [2021-06-05 19:53:04,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0590c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:53:04, skipping insertion in model container [2021-06-05 19:53:04,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:53:04" (2/3) ... [2021-06-05 19:53:04,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0590c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:53:04, skipping insertion in model container [2021-06-05 19:53:04,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:53:04" (3/3) ... [2021-06-05 19:53:04,540 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2021-06-05 19:53:04,544 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:53:04,544 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:53:04,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:53:04,545 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:53:04,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,569 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,570 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,573 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,574 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:53:04,576 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:53:04,591 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:53:04,603 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:53:04,603 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:53:04,604 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:53:04,604 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:53:04,604 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:53:04,604 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:53:04,604 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:53:04,604 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:53:04,611 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-05 19:53:04,970 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) [2021-06-05 19:53:05,006 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) [2021-06-05 19:53:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 19:53:05,052 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:05,052 INFO L554 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] [2021-06-05 19:53:05,053 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-06-05 19:53:05,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:05,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915570353] [2021-06-05 19:53:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:05,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:05,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915570353] [2021-06-05 19:53:05,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915570353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:05,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:05,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:53:05,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493740094] [2021-06-05 19:53:05,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:53:05,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:05,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:53:05,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:53:05,513 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-06-05 19:53:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:05,926 INFO L93 Difference]: Finished difference Result 18267 states and 62922 transitions. [2021-06-05 19:53:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:53:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2021-06-05 19:53:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:05,973 INFO L225 Difference]: With dead ends: 18267 [2021-06-05 19:53:05,973 INFO L226 Difference]: Without dead ends: 6029 [2021-06-05 19:53:05,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 193.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:53:06,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2021-06-05 19:53:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5099. [2021-06-05 19:53:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3203216947822676) internal successors, (16927), 5098 states have internal predecessors, (16927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 16927 transitions. [2021-06-05 19:53:06,341 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 16927 transitions. Word has length 48 [2021-06-05 19:53:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:06,344 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 16927 transitions. [2021-06-05 19:53:06,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-06-05 19:53:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 16927 transitions. [2021-06-05 19:53:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 19:53:06,359 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:06,360 INFO L554 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] [2021-06-05 19:53:06,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:53:06,361 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:06,363 INFO L82 PathProgramCache]: Analyzing trace with hash -153177928, now seen corresponding path program 1 times [2021-06-05 19:53:06,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:06,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613905739] [2021-06-05 19:53:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:06,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:06,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613905739] [2021-06-05 19:53:06,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613905739] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:06,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:06,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:53:06,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936270479] [2021-06-05 19:53:06,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:53:06,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:06,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:53:06,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:53:06,495 INFO L87 Difference]: Start difference. First operand 5099 states and 16927 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:06,638 INFO L93 Difference]: Finished difference Result 5851 states and 19300 transitions. [2021-06-05 19:53:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:53:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2021-06-05 19:53:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:06,660 INFO L225 Difference]: With dead ends: 5851 [2021-06-05 19:53:06,660 INFO L226 Difference]: Without dead ends: 4871 [2021-06-05 19:53:06,661 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:53:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-06-05 19:53:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4855. [2021-06-05 19:53:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4854 states have (on average 3.3014009064688916) internal successors, (16025), 4854 states have internal predecessors, (16025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 16025 transitions. [2021-06-05 19:53:06,819 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 16025 transitions. Word has length 50 [2021-06-05 19:53:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:06,819 INFO L482 AbstractCegarLoop]: Abstraction has 4855 states and 16025 transitions. [2021-06-05 19:53:06,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 16025 transitions. [2021-06-05 19:53:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 19:53:06,827 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:06,827 INFO L554 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] [2021-06-05 19:53:06,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:53:06,827 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1846206727, now seen corresponding path program 1 times [2021-06-05 19:53:06,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:06,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093826101] [2021-06-05 19:53:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:06,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:06,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093826101] [2021-06-05 19:53:06,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093826101] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:06,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:06,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:53:06,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110092685] [2021-06-05 19:53:06,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:53:06,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:06,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:53:06,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:53:06,930 INFO L87 Difference]: Start difference. First operand 4855 states and 16025 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) [2021-06-05 19:53:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:07,047 INFO L93 Difference]: Finished difference Result 5255 states and 17240 transitions. [2021-06-05 19:53:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:53:07,048 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 [2021-06-05 19:53:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:07,070 INFO L225 Difference]: With dead ends: 5255 [2021-06-05 19:53:07,070 INFO L226 Difference]: Without dead ends: 4555 [2021-06-05 19:53:07,070 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:53:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2021-06-05 19:53:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4427. [2021-06-05 19:53:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.2790329868956167) internal successors, (14513), 4426 states have internal predecessors, (14513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14513 transitions. [2021-06-05 19:53:07,208 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14513 transitions. Word has length 52 [2021-06-05 19:53:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:07,209 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14513 transitions. [2021-06-05 19:53:07,209 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) [2021-06-05 19:53:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14513 transitions. [2021-06-05 19:53:07,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:53:07,217 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:07,217 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:07,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:53:07,218 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:07,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1730681128, now seen corresponding path program 1 times [2021-06-05 19:53:07,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:07,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601594091] [2021-06-05 19:53:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:07,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:07,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601594091] [2021-06-05 19:53:07,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601594091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:07,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:07,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:53:07,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257617858] [2021-06-05 19:53:07,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:53:07,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:07,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:53:07,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:53:07,314 INFO L87 Difference]: Start difference. First operand 4427 states and 14513 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:07,540 INFO L93 Difference]: Finished difference Result 6233 states and 20189 transitions. [2021-06-05 19:53:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:53:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-05 19:53:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:07,561 INFO L225 Difference]: With dead ends: 6233 [2021-06-05 19:53:07,561 INFO L226 Difference]: Without dead ends: 5349 [2021-06-05 19:53:07,561 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 175.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:53:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-06-05 19:53:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4205. [2021-06-05 19:53:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2649857278782113) internal successors, (13726), 4204 states have internal predecessors, (13726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13726 transitions. [2021-06-05 19:53:07,659 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13726 transitions. Word has length 54 [2021-06-05 19:53:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:07,660 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13726 transitions. [2021-06-05 19:53:07,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13726 transitions. [2021-06-05 19:53:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:53:07,668 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:07,668 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:07,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:53:07,671 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:07,671 INFO L82 PathProgramCache]: Analyzing trace with hash 245526365, now seen corresponding path program 1 times [2021-06-05 19:53:07,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:07,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491432621] [2021-06-05 19:53:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:07,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:07,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491432621] [2021-06-05 19:53:07,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491432621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:07,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:07,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:53:07,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941486350] [2021-06-05 19:53:07,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:53:07,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:07,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:53:07,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:53:07,781 INFO L87 Difference]: Start difference. First operand 4205 states and 13726 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:08,026 INFO L93 Difference]: Finished difference Result 7404 states and 23874 transitions. [2021-06-05 19:53:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:53:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-05 19:53:08,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:08,045 INFO L225 Difference]: With dead ends: 7404 [2021-06-05 19:53:08,045 INFO L226 Difference]: Without dead ends: 5516 [2021-06-05 19:53:08,046 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 200.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:53:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2021-06-05 19:53:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 3757. [2021-06-05 19:53:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3757 states, 3756 states have (on average 3.213525026624068) internal successors, (12070), 3756 states have internal predecessors, (12070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 12070 transitions. [2021-06-05 19:53:08,141 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 12070 transitions. Word has length 54 [2021-06-05 19:53:08,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:08,141 INFO L482 AbstractCegarLoop]: Abstraction has 3757 states and 12070 transitions. [2021-06-05 19:53:08,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 12070 transitions. [2021-06-05 19:53:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:53:08,148 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:08,148 INFO L554 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] [2021-06-05 19:53:08,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:53:08,148 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:08,148 INFO L82 PathProgramCache]: Analyzing trace with hash -663113566, now seen corresponding path program 1 times [2021-06-05 19:53:08,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:08,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716556354] [2021-06-05 19:53:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:08,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:08,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716556354] [2021-06-05 19:53:08,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716556354] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:08,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:08,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:53:08,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089424450] [2021-06-05 19:53:08,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:53:08,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:08,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:53:08,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:53:08,202 INFO L87 Difference]: Start difference. First operand 3757 states and 12070 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-06-05 19:53:08,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:08,296 INFO L93 Difference]: Finished difference Result 4785 states and 15145 transitions. [2021-06-05 19:53:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:53:08,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 [2021-06-05 19:53:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:08,313 INFO L225 Difference]: With dead ends: 4785 [2021-06-05 19:53:08,313 INFO L226 Difference]: Without dead ends: 3413 [2021-06-05 19:53:08,313 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:53:08,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2021-06-05 19:53:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 3413. [2021-06-05 19:53:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 3412 states have (on average 3.148886283704572) internal successors, (10744), 3412 states have internal predecessors, (10744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 10744 transitions. [2021-06-05 19:53:08,436 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 10744 transitions. Word has length 55 [2021-06-05 19:53:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:08,436 INFO L482 AbstractCegarLoop]: Abstraction has 3413 states and 10744 transitions. [2021-06-05 19:53:08,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-06-05 19:53:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 10744 transitions. [2021-06-05 19:53:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 19:53:08,443 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:08,443 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:08,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:53:08,444 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:08,444 INFO L82 PathProgramCache]: Analyzing trace with hash 328653495, now seen corresponding path program 1 times [2021-06-05 19:53:08,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:08,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208262046] [2021-06-05 19:53:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:08,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:08,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208262046] [2021-06-05 19:53:08,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208262046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:08,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:08,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:53:08,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150722005] [2021-06-05 19:53:08,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:53:08,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:08,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:53:08,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:53:08,539 INFO L87 Difference]: Start difference. First operand 3413 states and 10744 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:08,654 INFO L93 Difference]: Finished difference Result 3665 states and 11272 transitions. [2021-06-05 19:53:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:53:08,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-05 19:53:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:08,662 INFO L225 Difference]: With dead ends: 3665 [2021-06-05 19:53:08,662 INFO L226 Difference]: Without dead ends: 2537 [2021-06-05 19:53:08,663 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:53:08,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2021-06-05 19:53:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2537. [2021-06-05 19:53:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2536 states have (on average 3.0232649842271293) internal successors, (7667), 2536 states have internal predecessors, (7667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 7667 transitions. [2021-06-05 19:53:08,725 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 7667 transitions. Word has length 56 [2021-06-05 19:53:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:08,725 INFO L482 AbstractCegarLoop]: Abstraction has 2537 states and 7667 transitions. [2021-06-05 19:53:08,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 7667 transitions. [2021-06-05 19:53:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 19:53:08,730 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:08,730 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:08,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:53:08,730 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:08,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:08,731 INFO L82 PathProgramCache]: Analyzing trace with hash -372773896, now seen corresponding path program 1 times [2021-06-05 19:53:08,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:08,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86687582] [2021-06-05 19:53:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:08,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:08,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86687582] [2021-06-05 19:53:08,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86687582] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:08,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:08,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:53:08,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421309123] [2021-06-05 19:53:08,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:53:08,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:08,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:53:08,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:53:08,835 INFO L87 Difference]: Start difference. First operand 2537 states and 7667 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:08,961 INFO L93 Difference]: Finished difference Result 2267 states and 6722 transitions. [2021-06-05 19:53:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:53:08,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-05 19:53:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:08,964 INFO L225 Difference]: With dead ends: 2267 [2021-06-05 19:53:08,964 INFO L226 Difference]: Without dead ends: 872 [2021-06-05 19:53:08,964 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:53:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-06-05 19:53:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2021-06-05 19:53:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 2.9001148105625716) internal successors, (2526), 871 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2526 transitions. [2021-06-05 19:53:08,980 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2526 transitions. Word has length 58 [2021-06-05 19:53:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:08,981 INFO L482 AbstractCegarLoop]: Abstraction has 872 states and 2526 transitions. [2021-06-05 19:53:08,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2526 transitions. [2021-06-05 19:53:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 19:53:08,982 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:08,982 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:08,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 19:53:08,983 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:08,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1259396511, now seen corresponding path program 1 times [2021-06-05 19:53:08,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:08,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365906277] [2021-06-05 19:53:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:09,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:09,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365906277] [2021-06-05 19:53:09,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365906277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:09,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:09,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:53:09,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411621464] [2021-06-05 19:53:09,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:53:09,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:09,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:53:09,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:53:09,110 INFO L87 Difference]: Start difference. First operand 872 states and 2526 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:09,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:09,169 INFO L93 Difference]: Finished difference Result 1355 states and 3967 transitions. [2021-06-05 19:53:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:53:09,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 19:53:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:09,171 INFO L225 Difference]: With dead ends: 1355 [2021-06-05 19:53:09,171 INFO L226 Difference]: Without dead ends: 804 [2021-06-05 19:53:09,171 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 19:53:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-06-05 19:53:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2021-06-05 19:53:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 2.8779576587795765) internal successors, (2311), 803 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2311 transitions. [2021-06-05 19:53:09,181 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2311 transitions. Word has length 60 [2021-06-05 19:53:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:09,182 INFO L482 AbstractCegarLoop]: Abstraction has 804 states and 2311 transitions. [2021-06-05 19:53:09,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2311 transitions. [2021-06-05 19:53:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 19:53:09,184 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:53:09,184 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:53:09,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 19:53:09,184 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:53:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:53:09,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1424861539, now seen corresponding path program 2 times [2021-06-05 19:53:09,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:53:09,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087602916] [2021-06-05 19:53:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:53:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:53:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:53:09,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:53:09,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087602916] [2021-06-05 19:53:09,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087602916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:53:09,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:53:09,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:53:09,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234190190] [2021-06-05 19:53:09,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:53:09,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:53:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:53:09,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:53:09,245 INFO L87 Difference]: Start difference. First operand 804 states and 2311 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:09,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:53:09,293 INFO L93 Difference]: Finished difference Result 750 states and 2149 transitions. [2021-06-05 19:53:09,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:53:09,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 19:53:09,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:53:09,293 INFO L225 Difference]: With dead ends: 750 [2021-06-05 19:53:09,293 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:53:09,293 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:53:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:53:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:53:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:53:09,294 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-05 19:53:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:53:09,294 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:53:09,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:53:09,294 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:53:09,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:53:09,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 19:53:09,296 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:53:09,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:53:09 BasicIcfg [2021-06-05 19:53:09,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:53:09,299 INFO L168 Benchmark]: Toolchain (without parser) took 5596.63 ms. Allocated memory was 421.5 MB in the beginning and 2.2 GB in the end (delta: 1.8 GB). Free memory was 384.0 MB in the beginning and 1.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 208.9 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:09,299 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 421.5 MB. Free memory was 401.8 MB in the beginning and 401.7 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:53:09,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.87 ms. Allocated memory is still 421.5 MB. Free memory was 383.7 MB in the beginning and 383.4 MB in the end (delta: 266.7 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:09,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.97 ms. Allocated memory is still 421.5 MB. Free memory was 383.4 MB in the beginning and 381.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:09,301 INFO L168 Benchmark]: Boogie Preprocessor took 13.87 ms. Allocated memory is still 421.5 MB. Free memory was 381.3 MB in the beginning and 380.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:09,301 INFO L168 Benchmark]: RCFGBuilder took 361.48 ms. Allocated memory is still 421.5 MB. Free memory was 380.3 MB in the beginning and 354.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:09,302 INFO L168 Benchmark]: TraceAbstraction took 4761.08 ms. Allocated memory was 421.5 MB in the beginning and 2.2 GB in the end (delta: 1.8 GB). Free memory was 353.0 MB in the beginning and 1.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 178.6 MB. Max. memory is 16.0 GB. [2021-06-05 19:53:09,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 421.5 MB. Free memory was 401.8 MB in the beginning and 401.7 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 427.87 ms. Allocated memory is still 421.5 MB. Free memory was 383.7 MB in the beginning and 383.4 MB in the end (delta: 266.7 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.97 ms. Allocated memory is still 421.5 MB. Free memory was 383.4 MB in the beginning and 381.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.87 ms. Allocated memory is still 421.5 MB. Free memory was 381.3 MB in the beginning and 380.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 361.48 ms. Allocated memory is still 421.5 MB. Free memory was 380.3 MB in the beginning and 354.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4761.08 ms. Allocated memory was 421.5 MB in the beginning and 2.2 GB in the end (delta: 1.8 GB). Free memory was 353.0 MB in the beginning and 1.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 178.6 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4692.9ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 140.8ms, AutomataDifference: 1811.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 366.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1047 SDtfs, 1526 SDslu, 3646 SDs, 0 SdLazy, 443 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 276.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1157.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1056.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3977 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.6ms SsaConstructionTime, 184.0ms SatisfiabilityAnalysisTime, 938.7ms InterpolantComputationTime, 547 NumberOfCodeBlocks, 547 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 537 ConstructedInterpolants, 0 QuantifiedInterpolants, 2199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...