/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/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:27:18,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:27:18,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:27:18,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:27:18,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:27:18,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:27:18,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:27:18,597 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 [2021-05-21 17:27:18,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:27:18,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:27:18,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:27:18,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:27:18,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:27:18,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:27:18,634 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:27:18,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:27:18,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:27:18,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:27:18,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:27:18,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:27:18,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:27:18,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:27:18,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:27:18,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:27:18,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:27:18,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:27:18,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:27:18,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:27:18,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:27:18,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:27:18,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:27:18,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:27:18,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:27:18,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:27:18,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:27:18,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:27:18,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:27:18,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:27:18,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:27:18,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:27:18,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:27:18,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:27:18,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:27:18,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:27:18,951 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:27:18,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2021-05-21 17:27:19,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4754e3b/f10be7c0b76043579deb0136a8533d25/FLAGafc29d97b [2021-05-21 17:27:19,515 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:27:19,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2021-05-21 17:27:19,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4754e3b/f10be7c0b76043579deb0136a8533d25/FLAGafc29d97b [2021-05-21 17:27:19,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4754e3b/f10be7c0b76043579deb0136a8533d25 [2021-05-21 17:27:19,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:27:19,825 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:27:19,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:27:19,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:27:19,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:27:19,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:27:19" (1/1) ... [2021-05-21 17:27:19,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586dd3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:19, skipping insertion in model container [2021-05-21 17:27:19,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:27:19" (1/1) ... [2021-05-21 17:27:19,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:27:19,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:27:20,001 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i[949,962] [2021-05-21 17:27:20,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:27:20,185 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:27:20,207 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i[949,962] [2021-05-21 17:27:20,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:27:20,322 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:27:20,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20 WrapperNode [2021-05-21 17:27:20,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:27:20,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:27:20,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:27:20,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:27:20,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:27:20,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:27:20,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:27:20,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:27:20,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... [2021-05-21 17:27:20,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:27:20,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:27:20,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:27:20,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:27:20,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:27:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:27:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:27:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:27:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:27:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:27:20,477 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:27:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:27:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:27:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 17:27:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 17:27:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:27:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:27:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:27:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:27:20,479 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:27:20,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:27:20,778 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:27:20,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:27:20 BoogieIcfgContainer [2021-05-21 17:27:20,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:27:20,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:27:20,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:27:20,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:27:20,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:27:19" (1/3) ... [2021-05-21 17:27:20,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5686d6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:27:20, skipping insertion in model container [2021-05-21 17:27:20,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:20" (2/3) ... [2021-05-21 17:27:20,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5686d6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:27:20, skipping insertion in model container [2021-05-21 17:27:20,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:27:20" (3/3) ... [2021-05-21 17:27:20,785 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2021-05-21 17:27:20,789 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:27:20,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:27:20,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:27:20,790 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:27:20,812 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,813 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,813 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,813 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,813 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,817 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,817 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,818 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,818 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,818 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,820 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:20,828 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:27:20,846 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 17:27:20,861 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:27:20,861 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:27:20,861 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:27:20,861 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:27:20,861 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:27:20,861 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:27:20,862 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:27:20,862 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:27:20,870 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 17:27:21,522 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 17:27:21,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:21,603 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:21,603 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:21,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1593178653, now seen corresponding path program 1 times [2021-05-21 17:27:21,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:21,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853651922] [2021-05-21 17:27:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:22,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:22,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853651922] [2021-05-21 17:27:22,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853651922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:22,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:22,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:27:22,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490174850] [2021-05-21 17:27:22,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:27:22,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:22,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:27:22,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:27:22,118 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:22,388 INFO L93 Difference]: Finished difference Result 11439 states and 39544 transitions. [2021-05-21 17:27:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:27:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-05-21 17:27:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:22,451 INFO L225 Difference]: With dead ends: 11439 [2021-05-21 17:27:22,451 INFO L226 Difference]: Without dead ends: 4334 [2021-05-21 17:27:22,452 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 199.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2021-05-21 17:27:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4334. [2021-05-21 17:27:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.3637202861758597) internal successors, (14575), 4333 states have internal predecessors, (14575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 14575 transitions. [2021-05-21 17:27:22,826 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 14575 transitions. Word has length 49 [2021-05-21 17:27:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:22,827 INFO L482 AbstractCegarLoop]: Abstraction has 4334 states and 14575 transitions. [2021-05-21 17:27:22,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 14575 transitions. [2021-05-21 17:27:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:27:22,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:22,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:22,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:27:22,842 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:22,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:22,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1690028140, now seen corresponding path program 1 times [2021-05-21 17:27:22,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:22,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4875576] [2021-05-21 17:27:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:22,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:22,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4875576] [2021-05-21 17:27:22,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4875576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:22,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:22,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:27:22,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706251036] [2021-05-21 17:27:22,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:27:22,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:22,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:27:22,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:27:22,973 INFO L87 Difference]: Start difference. First operand 4334 states and 14575 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:23,161 INFO L93 Difference]: Finished difference Result 6742 states and 22512 transitions. [2021-05-21 17:27:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:27:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 17:27:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:23,182 INFO L225 Difference]: With dead ends: 6742 [2021-05-21 17:27:23,182 INFO L226 Difference]: Without dead ends: 3158 [2021-05-21 17:27:23,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2021-05-21 17:27:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3158. [2021-05-21 17:27:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3157 states have (on average 3.3268926195755464) internal successors, (10503), 3157 states have internal predecessors, (10503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 10503 transitions. [2021-05-21 17:27:23,307 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 10503 transitions. Word has length 52 [2021-05-21 17:27:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:23,308 INFO L482 AbstractCegarLoop]: Abstraction has 3158 states and 10503 transitions. [2021-05-21 17:27:23,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 10503 transitions. [2021-05-21 17:27:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:27:23,315 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:23,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:23,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:27:23,316 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:23,316 INFO L82 PathProgramCache]: Analyzing trace with hash 792894823, now seen corresponding path program 1 times [2021-05-21 17:27:23,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:23,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438341756] [2021-05-21 17:27:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:23,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:23,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438341756] [2021-05-21 17:27:23,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438341756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:23,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:23,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:27:23,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93700871] [2021-05-21 17:27:23,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:27:23,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:23,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:27:23,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:27:23,525 INFO L87 Difference]: Start difference. First operand 3158 states and 10503 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:23,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:23,651 INFO L93 Difference]: Finished difference Result 3962 states and 12986 transitions. [2021-05-21 17:27:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:27:23,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-05-21 17:27:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:23,670 INFO L225 Difference]: With dead ends: 3962 [2021-05-21 17:27:23,671 INFO L226 Difference]: Without dead ends: 2870 [2021-05-21 17:27:23,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:23,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-05-21 17:27:23,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2021-05-21 17:27:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2869 states have (on average 3.2732659463227605) internal successors, (9391), 2869 states have internal predecessors, (9391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 9391 transitions. [2021-05-21 17:27:23,811 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 9391 transitions. Word has length 54 [2021-05-21 17:27:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:23,813 INFO L482 AbstractCegarLoop]: Abstraction has 2870 states and 9391 transitions. [2021-05-21 17:27:23,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 9391 transitions. [2021-05-21 17:27:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 17:27:23,820 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:23,820 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:23,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:27:23,821 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:23,822 INFO L82 PathProgramCache]: Analyzing trace with hash -173034250, now seen corresponding path program 1 times [2021-05-21 17:27:23,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:23,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135662804] [2021-05-21 17:27:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:23,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:23,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135662804] [2021-05-21 17:27:23,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135662804] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:23,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:23,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:23,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429760212] [2021-05-21 17:27:23,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:23,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:23,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:23,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:23,972 INFO L87 Difference]: Start difference. First operand 2870 states and 9391 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:24,150 INFO L93 Difference]: Finished difference Result 2978 states and 9484 transitions. [2021-05-21 17:27:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:27:24,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-05-21 17:27:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:24,163 INFO L225 Difference]: With dead ends: 2978 [2021-05-21 17:27:24,163 INFO L226 Difference]: Without dead ends: 2078 [2021-05-21 17:27:24,163 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:27:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-05-21 17:27:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2078. [2021-05-21 17:27:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2077 states have (on average 3.1376986037554166) internal successors, (6517), 2077 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 6517 transitions. [2021-05-21 17:27:24,216 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 6517 transitions. Word has length 55 [2021-05-21 17:27:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:24,216 INFO L482 AbstractCegarLoop]: Abstraction has 2078 states and 6517 transitions. [2021-05-21 17:27:24,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 6517 transitions. [2021-05-21 17:27:24,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 17:27:24,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:24,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:24,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:27:24,221 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:24,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:24,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2002222771, now seen corresponding path program 1 times [2021-05-21 17:27:24,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:24,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589416624] [2021-05-21 17:27:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:24,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:24,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589416624] [2021-05-21 17:27:24,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589416624] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:24,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:24,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:27:24,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772604466] [2021-05-21 17:27:24,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:27:24,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:24,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:27:24,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:27:24,300 INFO L87 Difference]: Start difference. First operand 2078 states and 6517 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:24,421 INFO L93 Difference]: Finished difference Result 1718 states and 5254 transitions. [2021-05-21 17:27:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 17:27:24,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-05-21 17:27:24,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:24,427 INFO L225 Difference]: With dead ends: 1718 [2021-05-21 17:27:24,427 INFO L226 Difference]: Without dead ends: 1250 [2021-05-21 17:27:24,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:27:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-05-21 17:27:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2021-05-21 17:27:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.008006405124099) internal successors, (3757), 1249 states have internal predecessors, (3757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 3757 transitions. [2021-05-21 17:27:24,461 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 3757 transitions. Word has length 57 [2021-05-21 17:27:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:24,462 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 3757 transitions. [2021-05-21 17:27:24,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 3757 transitions. [2021-05-21 17:27:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 17:27:24,465 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:24,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:24,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:27:24,466 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:24,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:24,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2022716047, now seen corresponding path program 1 times [2021-05-21 17:27:24,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:24,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114125498] [2021-05-21 17:27:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:24,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:24,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114125498] [2021-05-21 17:27:24,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114125498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:24,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:24,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:24,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539904932] [2021-05-21 17:27:24,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:24,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:24,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:24,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:24,594 INFO L87 Difference]: Start difference. First operand 1250 states and 3757 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:24,728 INFO L93 Difference]: Finished difference Result 1448 states and 4408 transitions. [2021-05-21 17:27:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 17:27:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 17:27:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:24,730 INFO L225 Difference]: With dead ends: 1448 [2021-05-21 17:27:24,730 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:27:24,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:27:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:27:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:27:24,735 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-05-21 17:27:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:24,735 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:27:24,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:27:24,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:27:24,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:27:24,737 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:27:24,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:27:24 BasicIcfg [2021-05-21 17:27:24,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:27:24,740 INFO L168 Benchmark]: Toolchain (without parser) took 4915.21 ms. Allocated memory was 341.8 MB in the beginning and 849.3 MB in the end (delta: 507.5 MB). Free memory was 304.8 MB in the beginning and 697.6 MB in the end (delta: -392.8 MB). Peak memory consumption was 116.5 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:24,741 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 341.8 MB. Free memory is still 322.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:27:24,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.32 ms. Allocated memory is still 341.8 MB. Free memory was 304.7 MB in the beginning and 305.0 MB in the end (delta: -354.4 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:24,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.78 ms. Allocated memory is still 341.8 MB. Free memory was 305.0 MB in the beginning and 302.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:24,744 INFO L168 Benchmark]: Boogie Preprocessor took 33.08 ms. Allocated memory is still 341.8 MB. Free memory was 302.9 MB in the beginning and 301.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:24,744 INFO L168 Benchmark]: RCFGBuilder took 364.66 ms. Allocated memory is still 341.8 MB. Free memory was 301.9 MB in the beginning and 276.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:24,745 INFO L168 Benchmark]: TraceAbstraction took 3959.32 ms. Allocated memory was 341.8 MB in the beginning and 849.3 MB in the end (delta: 507.5 MB). Free memory was 275.7 MB in the beginning and 697.6 MB in the end (delta: -421.9 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:24,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 341.8 MB. Free memory is still 322.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 495.32 ms. Allocated memory is still 341.8 MB. Free memory was 304.7 MB in the beginning and 305.0 MB in the end (delta: -354.4 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.78 ms. Allocated memory is still 341.8 MB. Free memory was 305.0 MB in the beginning and 302.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.08 ms. Allocated memory is still 341.8 MB. Free memory was 302.9 MB in the beginning and 301.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 364.66 ms. Allocated memory is still 341.8 MB. Free memory was 301.9 MB in the beginning and 276.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3959.32 ms. Allocated memory was 341.8 MB in the beginning and 849.3 MB in the end (delta: 507.5 MB). Free memory was 275.7 MB in the beginning and 697.6 MB in the end (delta: -421.9 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3877.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 114.5ms, AutomataDifference: 1191.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 660.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 621 SDtfs, 1005 SDslu, 1901 SDs, 0 SdLazy, 254 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 188.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 750.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 711.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.8ms SsaConstructionTime, 185.9ms SatisfiabilityAnalysisTime, 818.7ms InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 962 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...