/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/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:29:16,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:29:16,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:29:16,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:29:16,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:29:16,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:29:16,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:29:16,091 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 [2021-03-10 17:29:16,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:29:16,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:29:16,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:29:16,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:29:16,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:29:16,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:29:16,122 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:29:16,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:29:16,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:29:16,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:29:16,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:29:16,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:29:16,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:29:16,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:29:16,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:29:16,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:29:16,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:29:16,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:29:16,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:29:16,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:29:16,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:29:16,384 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:29:16,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2021-03-10 17:29:16,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3811ce4c8/787adbe40c5c4874bf6269280d0a4a3c/FLAG629e840d9 [2021-03-10 17:29:16,821 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:29:16,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2021-03-10 17:29:16,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3811ce4c8/787adbe40c5c4874bf6269280d0a4a3c/FLAG629e840d9 [2021-03-10 17:29:17,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3811ce4c8/787adbe40c5c4874bf6269280d0a4a3c [2021-03-10 17:29:17,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:29:17,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:29:17,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:29:17,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:29:17,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:29:17,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548c7cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17, skipping insertion in model container [2021-03-10 17:29:17,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:29:17,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:29:17,351 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i[949,962] [2021-03-10 17:29:17,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:29:17,434 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:29:17,446 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i[949,962] [2021-03-10 17:29:17,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:29:17,540 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:29:17,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17 WrapperNode [2021-03-10 17:29:17,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:29:17,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:29:17,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:29:17,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:29:17,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:29:17,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:29:17,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:29:17,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:29:17,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (1/1) ... [2021-03-10 17:29:17,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:29:17,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:29:17,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:29:17,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:29:17,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (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 [2021-03-10 17:29:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:29:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:29:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:29:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:29:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:29:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:29:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:29:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:29:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:29:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:29:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:29:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:29:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:29:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:29:17,639 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:29:17,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:29:17,837 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:29:17,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:29:17 BoogieIcfgContainer [2021-03-10 17:29:17,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:29:17,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:29:17,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:29:17,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:29:17,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:29:17" (1/3) ... [2021-03-10 17:29:17,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fd5251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:29:17, skipping insertion in model container [2021-03-10 17:29:17,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:17" (2/3) ... [2021-03-10 17:29:17,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fd5251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:29:17, skipping insertion in model container [2021-03-10 17:29:17,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:29:17" (3/3) ... [2021-03-10 17:29:17,844 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2021-03-10 17:29:17,847 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:29:17,847 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:29:17,849 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:29:17,850 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,877 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,877 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:17,908 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:29:17,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:29:17,934 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:29:17,935 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:29:17,935 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:29:17,935 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:29:17,935 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:29:17,935 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:29:17,935 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:29:17,935 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:29:17,941 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:29:18,333 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:29:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:29:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:29:18,371 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:18,372 INFO L519 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] [2021-03-10 17:29:18,372 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:18,375 INFO L82 PathProgramCache]: Analyzing trace with hash 342406277, now seen corresponding path program 1 times [2021-03-10 17:29:18,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:18,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909296251] [2021-03-10 17:29:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:18,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909296251] [2021-03-10 17:29:18,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:18,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:18,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163159011] [2021-03-10 17:29:18,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:18,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:18,656 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:29:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:19,009 INFO L93 Difference]: Finished difference Result 18550 states and 63904 transitions. [2021-03-10 17:29:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:29:19,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-03-10 17:29:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:19,052 INFO L225 Difference]: With dead ends: 18550 [2021-03-10 17:29:19,052 INFO L226 Difference]: Without dead ends: 5755 [2021-03-10 17:29:19,053 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 139.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:29:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5755 states. [2021-03-10 17:29:19,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5755 to 4675. [2021-03-10 17:29:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4675 states, 4674 states have (on average 3.363072314933676) internal successors, (15719), 4674 states have internal predecessors, (15719), 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) [2021-03-10 17:29:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4675 states to 4675 states and 15719 transitions. [2021-03-10 17:29:19,279 INFO L78 Accepts]: Start accepts. Automaton has 4675 states and 15719 transitions. Word has length 40 [2021-03-10 17:29:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:19,280 INFO L480 AbstractCegarLoop]: Abstraction has 4675 states and 15719 transitions. [2021-03-10 17:29:19,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:29:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4675 states and 15719 transitions. [2021-03-10 17:29:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:29:19,286 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:19,286 INFO L519 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] [2021-03-10 17:29:19,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:29:19,286 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1895058182, now seen corresponding path program 1 times [2021-03-10 17:29:19,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:19,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002457050] [2021-03-10 17:29:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:19,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002457050] [2021-03-10 17:29:19,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:19,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:19,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355731774] [2021-03-10 17:29:19,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:19,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:19,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:19,406 INFO L87 Difference]: Start difference. First operand 4675 states and 15719 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-03-10 17:29:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:19,700 INFO L93 Difference]: Finished difference Result 7830 states and 25918 transitions. [2021-03-10 17:29:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:29:19,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-03-10 17:29:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:19,728 INFO L225 Difference]: With dead ends: 7830 [2021-03-10 17:29:19,728 INFO L226 Difference]: Without dead ends: 5775 [2021-03-10 17:29:19,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 225.0ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:29:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2021-03-10 17:29:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 4695. [2021-03-10 17:29:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4694 states have (on average 3.356625479335322) internal successors, (15756), 4694 states have internal predecessors, (15756), 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) [2021-03-10 17:29:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 15756 transitions. [2021-03-10 17:29:19,898 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 15756 transitions. Word has length 42 [2021-03-10 17:29:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:19,898 INFO L480 AbstractCegarLoop]: Abstraction has 4695 states and 15756 transitions. [2021-03-10 17:29:19,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-03-10 17:29:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 15756 transitions. [2021-03-10 17:29:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:29:19,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:19,905 INFO L519 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] [2021-03-10 17:29:19,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:29:19,905 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash 789252865, now seen corresponding path program 1 times [2021-03-10 17:29:19,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:19,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247140143] [2021-03-10 17:29:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:20,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247140143] [2021-03-10 17:29:20,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:20,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:29:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333884539] [2021-03-10 17:29:20,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:29:20,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:20,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:29:20,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:29:20,033 INFO L87 Difference]: Start difference. First operand 4695 states and 15756 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2021-03-10 17:29:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:20,153 INFO L93 Difference]: Finished difference Result 6545 states and 21579 transitions. [2021-03-10 17:29:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:29:20,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 44 [2021-03-10 17:29:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:20,172 INFO L225 Difference]: With dead ends: 6545 [2021-03-10 17:29:20,172 INFO L226 Difference]: Without dead ends: 3230 [2021-03-10 17:29:20,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 99.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:29:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2021-03-10 17:29:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2750. [2021-03-10 17:29:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2749 states have (on average 3.199708985085486) internal successors, (8796), 2749 states have internal predecessors, (8796), 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) [2021-03-10 17:29:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 8796 transitions. [2021-03-10 17:29:20,224 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 8796 transitions. Word has length 44 [2021-03-10 17:29:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:20,224 INFO L480 AbstractCegarLoop]: Abstraction has 2750 states and 8796 transitions. [2021-03-10 17:29:20,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2021-03-10 17:29:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 8796 transitions. [2021-03-10 17:29:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:29:20,229 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:20,229 INFO L519 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] [2021-03-10 17:29:20,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:29:20,230 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:20,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1721846773, now seen corresponding path program 1 times [2021-03-10 17:29:20,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:20,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579658835] [2021-03-10 17:29:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:20,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579658835] [2021-03-10 17:29:20,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:20,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:29:20,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502028734] [2021-03-10 17:29:20,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:29:20,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:20,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:29:20,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:29:20,355 INFO L87 Difference]: Start difference. First operand 2750 states and 8796 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-03-10 17:29:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:20,471 INFO L93 Difference]: Finished difference Result 3422 states and 10756 transitions. [2021-03-10 17:29:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:29:20,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-03-10 17:29:20,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:20,484 INFO L225 Difference]: With dead ends: 3422 [2021-03-10 17:29:20,484 INFO L226 Difference]: Without dead ends: 1252 [2021-03-10 17:29:20,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 140.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:29:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-03-10 17:29:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2021-03-10 17:29:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 2.9752198241406873) internal successors, (3722), 1251 states have internal predecessors, (3722), 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) [2021-03-10 17:29:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3722 transitions. [2021-03-10 17:29:20,509 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3722 transitions. Word has length 45 [2021-03-10 17:29:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:20,509 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 3722 transitions. [2021-03-10 17:29:20,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-03-10 17:29:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3722 transitions. [2021-03-10 17:29:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:29:20,512 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:20,512 INFO L519 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] [2021-03-10 17:29:20,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:29:20,512 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:20,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1962457580, now seen corresponding path program 1 times [2021-03-10 17:29:20,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:20,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201978419] [2021-03-10 17:29:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:20,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201978419] [2021-03-10 17:29:20,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:20,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:29:20,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498129353] [2021-03-10 17:29:20,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:29:20,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:20,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:29:20,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:29:20,564 INFO L87 Difference]: Start difference. First operand 1252 states and 3722 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:20,630 INFO L93 Difference]: Finished difference Result 1453 states and 4273 transitions. [2021-03-10 17:29:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:29:20,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 17:29:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:20,633 INFO L225 Difference]: With dead ends: 1453 [2021-03-10 17:29:20,633 INFO L226 Difference]: Without dead ends: 1117 [2021-03-10 17:29:20,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:29:20,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2021-03-10 17:29:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1117. [2021-03-10 17:29:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.931899641577061) internal successors, (3272), 1116 states have internal predecessors, (3272), 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) [2021-03-10 17:29:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 3272 transitions. [2021-03-10 17:29:20,652 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 3272 transitions. Word has length 48 [2021-03-10 17:29:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:20,653 INFO L480 AbstractCegarLoop]: Abstraction has 1117 states and 3272 transitions. [2021-03-10 17:29:20,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 3272 transitions. [2021-03-10 17:29:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:29:20,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:20,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:29:20,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:29:20,656 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:20,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1262805501, now seen corresponding path program 1 times [2021-03-10 17:29:20,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:20,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56186479] [2021-03-10 17:29:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:20,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56186479] [2021-03-10 17:29:20,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:20,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:20,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450216052] [2021-03-10 17:29:20,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:20,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:20,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:20,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:20,754 INFO L87 Difference]: Start difference. First operand 1117 states and 3272 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:20,836 INFO L93 Difference]: Finished difference Result 1009 states and 2852 transitions. [2021-03-10 17:29:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:29:20,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 17:29:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:20,838 INFO L225 Difference]: With dead ends: 1009 [2021-03-10 17:29:20,838 INFO L226 Difference]: Without dead ends: 757 [2021-03-10 17:29:20,839 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:29:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-03-10 17:29:20,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2021-03-10 17:29:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 2.7605820105820107) internal successors, (2087), 756 states have internal predecessors, (2087), 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) [2021-03-10 17:29:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2087 transitions. [2021-03-10 17:29:20,850 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 2087 transitions. Word has length 49 [2021-03-10 17:29:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:20,850 INFO L480 AbstractCegarLoop]: Abstraction has 757 states and 2087 transitions. [2021-03-10 17:29:20,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 2087 transitions. [2021-03-10 17:29:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-03-10 17:29:20,851 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:20,852 INFO L519 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] [2021-03-10 17:29:20,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:29:20,852 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:20,853 INFO L82 PathProgramCache]: Analyzing trace with hash -6685818, now seen corresponding path program 1 times [2021-03-10 17:29:20,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:20,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5665039] [2021-03-10 17:29:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:20,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5665039] [2021-03-10 17:29:20,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:20,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:29:20,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338389323] [2021-03-10 17:29:20,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:29:20,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:20,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:29:20,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:29:20,969 INFO L87 Difference]: Start difference. First operand 757 states and 2087 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-03-10 17:29:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:21,022 INFO L93 Difference]: Finished difference Result 460 states and 1196 transitions. [2021-03-10 17:29:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:29:21,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2021-03-10 17:29:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:21,023 INFO L225 Difference]: With dead ends: 460 [2021-03-10 17:29:21,023 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:29:21,023 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:29:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:29:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:29:21,024 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) [2021-03-10 17:29:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:29:21,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-03-10 17:29:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:21,024 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:29:21,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-03-10 17:29:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:29:21,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:29:21,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:29:21,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:29:21 BasicIcfg [2021-03-10 17:29:21,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:29:21,030 INFO L168 Benchmark]: Toolchain (without parser) took 3821.10 ms. Allocated memory was 255.9 MB in the beginning and 822.1 MB in the end (delta: 566.2 MB). Free memory was 234.8 MB in the beginning and 673.5 MB in the end (delta: -438.7 MB). Peak memory consumption was 125.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:21,030 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:29:21,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.37 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.2 MB in the beginning and 335.1 MB in the end (delta: -100.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:21,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.54 ms. Allocated memory is still 373.3 MB. Free memory was 335.1 MB in the beginning and 333.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:29:21,033 INFO L168 Benchmark]: Boogie Preprocessor took 12.49 ms. Allocated memory is still 373.3 MB. Free memory was 333.0 MB in the beginning and 331.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:29:21,033 INFO L168 Benchmark]: RCFGBuilder took 239.95 ms. Allocated memory is still 373.3 MB. Free memory was 331.8 MB in the beginning and 310.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:21,035 INFO L168 Benchmark]: TraceAbstraction took 3189.02 ms. Allocated memory was 373.3 MB in the beginning and 822.1 MB in the end (delta: 448.8 MB). Free memory was 309.3 MB in the beginning and 673.5 MB in the end (delta: -364.2 MB). Peak memory consumption was 85.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:21,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 330.37 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.2 MB in the beginning and 335.1 MB in the end (delta: -100.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.54 ms. Allocated memory is still 373.3 MB. Free memory was 335.1 MB in the beginning and 333.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.49 ms. Allocated memory is still 373.3 MB. Free memory was 333.0 MB in the beginning and 331.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 239.95 ms. Allocated memory is still 373.3 MB. Free memory was 331.8 MB in the beginning and 310.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3189.02 ms. Allocated memory was 373.3 MB in the beginning and 822.1 MB in the end (delta: 448.8 MB). Free memory was 309.3 MB in the beginning and 673.5 MB in the end (delta: -364.2 MB). Peak memory consumption was 85.9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3091.9ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 60.1ms, AutomataDifference: 1225.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 397.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 634 SDtfs, 1366 SDslu, 2228 SDs, 0 SdLazy, 270 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 169.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 821.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 491.2ms AutomataMinimizationTime, 7 MinimizatonAttempts, 2640 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.5ms SsaConstructionTime, 121.2ms SatisfiabilityAnalysisTime, 653.0ms InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 1255 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...