/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:07:50,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:07:50,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:07:50,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:07:50,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:07:50,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:07:50,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:07:50,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:07:50,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:07:50,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:07:50,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:07:50,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:07:50,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:07:50,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:07:50,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:07:50,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:07:50,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:07:50,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:07:50,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:07:50,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:07:50,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:07:50,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:07:50,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:07:50,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:07:50,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:07:50,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:07:50,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:07:50,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:07:50,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:07:50,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:07:50,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:07:50,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:07:50,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:07:50,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:07:50,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:07:50,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:07:50,784 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-SemanticLbe.epf [2020-11-12 00:07:50,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:07:50,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:07:50,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:07:50,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:07:50,814 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:07:50,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:07:50,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:07:50,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:07:50,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:07:50,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:07:50,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:07:50,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:07:50,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:07:50,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:07:50,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:07:50,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:07:50,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:07:50,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:07:50,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:07:50,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:07:50,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:07:50,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:07:50,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:07:50,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:07:50,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:07:50,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:07:50,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:07:50,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:07:50,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:07:51,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:07:51,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:07:51,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:07:51,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:07:51,268 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:07:51,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.oepc.i [2020-11-12 00:07:51,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ff5e492/f8225142bf9a4e9794a2eb6b9079e8e1/FLAG31361f32d [2020-11-12 00:07:52,059 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:07:52,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.oepc.i [2020-11-12 00:07:52,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ff5e492/f8225142bf9a4e9794a2eb6b9079e8e1/FLAG31361f32d [2020-11-12 00:07:52,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ff5e492/f8225142bf9a4e9794a2eb6b9079e8e1 [2020-11-12 00:07:52,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:07:52,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:07:52,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:07:52,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:07:52,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:07:52,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:07:52" (1/1) ... [2020-11-12 00:07:52,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cd26a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:52, skipping insertion in model container [2020-11-12 00:07:52,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:07:52" (1/1) ... [2020-11-12 00:07:52,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:07:52,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:07:52,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:07:52,895 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:07:52,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:07:53,100 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:07:53,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53 WrapperNode [2020-11-12 00:07:53,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:07:53,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:07:53,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:07:53,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:07:53,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:07:53,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:07:53,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:07:53,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:07:53,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (1/1) ... [2020-11-12 00:07:53,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:07:53,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:07:53,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:07:53,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:07:53,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (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 [2020-11-12 00:07:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:07:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:07:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:07:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:07:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:07:53,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:07:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:07:53,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:07:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:07:53,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:07:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-12 00:07:53,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-12 00:07:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:07:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:07:53,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:07:53,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:07:53,293 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 00:07:53,797 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:07:53,797 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:07:53,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:07:53 BoogieIcfgContainer [2020-11-12 00:07:53,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:07:53,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:07:53,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:07:53,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:07:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:07:52" (1/3) ... [2020-11-12 00:07:53,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737f1511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:07:53, skipping insertion in model container [2020-11-12 00:07:53,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:53" (2/3) ... [2020-11-12 00:07:53,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737f1511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:07:53, skipping insertion in model container [2020-11-12 00:07:53,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:07:53" (3/3) ... [2020-11-12 00:07:53,809 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.oepc.i [2020-11-12 00:07:53,825 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:07:53,825 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:07:53,829 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:07:53,830 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:07:53,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,871 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,871 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,876 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,876 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,876 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,877 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,878 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,878 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,878 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,879 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,879 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,879 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,879 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,879 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,880 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,880 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,880 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,880 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,883 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,883 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,891 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,892 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,892 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,892 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,895 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,895 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,895 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,896 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:07:53,901 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:07:53,913 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-12 00:07:53,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:07:53,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:07:53,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:07:53,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:07:53,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:07:53,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:07:53,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:07:53,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:07:53,949 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:07:53,951 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 91 transitions, 202 flow [2020-11-12 00:07:53,954 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 91 transitions, 202 flow [2020-11-12 00:07:53,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 91 transitions, 202 flow [2020-11-12 00:07:54,004 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2020-11-12 00:07:54,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:07:54,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 3/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-12 00:07:54,013 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-12 00:07:58,316 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-11-12 00:07:58,577 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-11-12 00:07:58,916 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-12 00:07:59,021 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-12 00:07:59,275 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-12 00:07:59,398 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-12 00:07:59,404 INFO L131 LiptonReduction]: Checked pairs total: 3779 [2020-11-12 00:07:59,404 INFO L133 LiptonReduction]: Total number of compositions: 78 [2020-11-12 00:07:59,410 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-11-12 00:07:59,477 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 850 states, 848 states have (on average 3.7004716981132075) internal successors, (3138), 849 states have internal predecessors, (3138), 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) [2020-11-12 00:07:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 850 states, 848 states have (on average 3.7004716981132075) internal successors, (3138), 849 states have internal predecessors, (3138), 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) [2020-11-12 00:07:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-12 00:07:59,492 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:07:59,492 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:07:59,493 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:07:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:07:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash -365485021, now seen corresponding path program 1 times [2020-11-12 00:07:59,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:07:59,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459365936] [2020-11-12 00:07:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:07:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:07:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:07:59,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459365936] [2020-11-12 00:07:59,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:07:59,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:07:59,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784845852] [2020-11-12 00:07:59,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-12 00:07:59,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:07:59,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-12 00:07:59,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 00:07:59,809 INFO L87 Difference]: Start difference. First operand has 850 states, 848 states have (on average 3.7004716981132075) internal successors, (3138), 849 states have internal predecessors, (3138), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2020-11-12 00:07:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:07:59,866 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-11-12 00:07:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-12 00:07:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2020-11-12 00:07:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:07:59,898 INFO L225 Difference]: With dead ends: 850 [2020-11-12 00:07:59,898 INFO L226 Difference]: Without dead ends: 706 [2020-11-12 00:07:59,902 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 00:07:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-11-12 00:08:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-11-12 00:08:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 3.4638297872340424) internal successors, (2442), 705 states have internal predecessors, (2442), 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) [2020-11-12 00:08:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-11-12 00:08:00,089 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-11-12 00:08:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:00,090 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-11-12 00:08:00,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2020-11-12 00:08:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-11-12 00:08:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:08:00,095 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:00,095 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:00,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:08:00,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1554861033, now seen corresponding path program 1 times [2020-11-12 00:08:00,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:00,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531501590] [2020-11-12 00:08:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:00,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531501590] [2020-11-12 00:08:00,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:00,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:08:00,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34422265] [2020-11-12 00:08:00,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:08:00,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:00,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:08:00,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:08:00,316 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2020-11-12 00:08:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:00,379 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-11-12 00:08:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:08:00,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2020-11-12 00:08:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:00,390 INFO L225 Difference]: With dead ends: 778 [2020-11-12 00:08:00,391 INFO L226 Difference]: Without dead ends: 634 [2020-11-12 00:08:00,392 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-11-12 00:08:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-11-12 00:08:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.3933649289099526) internal successors, (2148), 633 states have internal predecessors, (2148), 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) [2020-11-12 00:08:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-11-12 00:08:00,429 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-11-12 00:08:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:00,429 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-11-12 00:08:00,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2020-11-12 00:08:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-11-12 00:08:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-12 00:08:00,440 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:00,441 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:00,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:08:00,441 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:00,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:00,446 INFO L82 PathProgramCache]: Analyzing trace with hash 956030226, now seen corresponding path program 1 times [2020-11-12 00:08:00,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:00,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048595117] [2020-11-12 00:08:00,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:00,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048595117] [2020-11-12 00:08:00,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:00,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:08:00,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484524932] [2020-11-12 00:08:00,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:08:00,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:00,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:08:00,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:00,535 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2020-11-12 00:08:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:00,642 INFO L93 Difference]: Finished difference Result 814 states and 2703 transitions. [2020-11-12 00:08:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:08:00,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2020-11-12 00:08:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:00,647 INFO L225 Difference]: With dead ends: 814 [2020-11-12 00:08:00,648 INFO L226 Difference]: Without dead ends: 394 [2020-11-12 00:08:00,648 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 00:08:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-11-12 00:08:00,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-11-12 00:08:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.2213740458015265) internal successors, (1266), 393 states have internal predecessors, (1266), 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) [2020-11-12 00:08:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1266 transitions. [2020-11-12 00:08:00,667 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1266 transitions. Word has length 12 [2020-11-12 00:08:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:00,667 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1266 transitions. [2020-11-12 00:08:00,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2020-11-12 00:08:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1266 transitions. [2020-11-12 00:08:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:08:00,668 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:00,669 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:00,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:08:00,669 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:00,670 INFO L82 PathProgramCache]: Analyzing trace with hash -427974771, now seen corresponding path program 1 times [2020-11-12 00:08:00,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:00,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753198812] [2020-11-12 00:08:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:00,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753198812] [2020-11-12 00:08:00,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:00,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:08:00,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152676319] [2020-11-12 00:08:00,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:08:00,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:00,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:08:00,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:08:00,737 INFO L87 Difference]: Start difference. First operand 394 states and 1266 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2020-11-12 00:08:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:00,809 INFO L93 Difference]: Finished difference Result 430 states and 1332 transitions. [2020-11-12 00:08:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:08:00,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2020-11-12 00:08:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:00,820 INFO L225 Difference]: With dead ends: 430 [2020-11-12 00:08:00,821 INFO L226 Difference]: Without dead ends: 358 [2020-11-12 00:08:00,821 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:00,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-12 00:08:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-12 00:08:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.1596638655462184) internal successors, (1128), 357 states have internal predecessors, (1128), 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) [2020-11-12 00:08:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1128 transitions. [2020-11-12 00:08:00,838 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1128 transitions. Word has length 13 [2020-11-12 00:08:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:00,839 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 1128 transitions. [2020-11-12 00:08:00,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2020-11-12 00:08:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1128 transitions. [2020-11-12 00:08:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-12 00:08:00,840 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:00,840 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:00,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:08:00,841 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash -381950271, now seen corresponding path program 1 times [2020-11-12 00:08:00,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:00,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212986012] [2020-11-12 00:08:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:00,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212986012] [2020-11-12 00:08:00,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:00,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:08:00,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955190531] [2020-11-12 00:08:00,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:08:00,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:00,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:08:00,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:00,978 INFO L87 Difference]: Start difference. First operand 358 states and 1128 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2020-11-12 00:08:01,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:01,087 INFO L93 Difference]: Finished difference Result 496 states and 1517 transitions. [2020-11-12 00:08:01,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:08:01,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2020-11-12 00:08:01,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:01,090 INFO L225 Difference]: With dead ends: 496 [2020-11-12 00:08:01,090 INFO L226 Difference]: Without dead ends: 262 [2020-11-12 00:08:01,091 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 00:08:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-12 00:08:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-11-12 00:08:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.954022988505747) internal successors, (771), 261 states have internal predecessors, (771), 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) [2020-11-12 00:08:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-11-12 00:08:01,103 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2020-11-12 00:08:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:01,104 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-11-12 00:08:01,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2020-11-12 00:08:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-11-12 00:08:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-12 00:08:01,105 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:01,105 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:01,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:08:01,105 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1928352265, now seen corresponding path program 1 times [2020-11-12 00:08:01,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:01,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129832796] [2020-11-12 00:08:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:01,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129832796] [2020-11-12 00:08:01,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:01,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:08:01,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340926874] [2020-11-12 00:08:01,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:08:01,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:01,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:08:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:08:01,222 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-12 00:08:01,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:01,295 INFO L93 Difference]: Finished difference Result 319 states and 873 transitions. [2020-11-12 00:08:01,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:08:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2020-11-12 00:08:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:01,299 INFO L225 Difference]: With dead ends: 319 [2020-11-12 00:08:01,299 INFO L226 Difference]: Without dead ends: 238 [2020-11-12 00:08:01,300 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-11-12 00:08:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-11-12 00:08:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.780590717299578) internal successors, (659), 237 states have internal predecessors, (659), 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) [2020-11-12 00:08:01,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2020-11-12 00:08:01,310 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2020-11-12 00:08:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:01,311 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2020-11-12 00:08:01,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-12 00:08:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2020-11-12 00:08:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 00:08:01,312 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:01,313 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:01,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:08:01,313 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:01,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1274854318, now seen corresponding path program 1 times [2020-11-12 00:08:01,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:01,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325053814] [2020-11-12 00:08:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:01,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325053814] [2020-11-12 00:08:01,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:01,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:08:01,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295084739] [2020-11-12 00:08:01,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:08:01,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:01,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:08:01,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:01,415 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2020-11-12 00:08:01,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:01,503 INFO L93 Difference]: Finished difference Result 247 states and 617 transitions. [2020-11-12 00:08:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:08:01,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2020-11-12 00:08:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:01,510 INFO L225 Difference]: With dead ends: 247 [2020-11-12 00:08:01,510 INFO L226 Difference]: Without dead ends: 182 [2020-11-12 00:08:01,511 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:08:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-12 00:08:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-12 00:08:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.447513812154696) internal successors, (443), 181 states have internal predecessors, (443), 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) [2020-11-12 00:08:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-11-12 00:08:01,520 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2020-11-12 00:08:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:01,520 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-11-12 00:08:01,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2020-11-12 00:08:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-11-12 00:08:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-12 00:08:01,523 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:01,526 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:01,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:08:01,526 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:01,527 INFO L82 PathProgramCache]: Analyzing trace with hash 20275159, now seen corresponding path program 1 times [2020-11-12 00:08:01,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:01,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463242173] [2020-11-12 00:08:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:01,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463242173] [2020-11-12 00:08:01,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:01,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 00:08:01,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121275267] [2020-11-12 00:08:01,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:08:01,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:08:01,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:08:01,623 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2020-11-12 00:08:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:01,706 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-11-12 00:08:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:08:01,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2020-11-12 00:08:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:01,708 INFO L225 Difference]: With dead ends: 165 [2020-11-12 00:08:01,708 INFO L226 Difference]: Without dead ends: 132 [2020-11-12 00:08:01,709 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:08:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-12 00:08:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-11-12 00:08:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.2519083969465647) internal successors, (295), 131 states have internal predecessors, (295), 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) [2020-11-12 00:08:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-11-12 00:08:01,716 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-11-12 00:08:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:01,717 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-11-12 00:08:01,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2020-11-12 00:08:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-11-12 00:08:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-12 00:08:01,718 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:01,718 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:01,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 00:08:01,718 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:01,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1560246760, now seen corresponding path program 1 times [2020-11-12 00:08:01,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:01,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655451754] [2020-11-12 00:08:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:01,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655451754] [2020-11-12 00:08:01,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:01,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:08:01,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974941658] [2020-11-12 00:08:01,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:08:01,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:01,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:08:01,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:01,799 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2020-11-12 00:08:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:01,848 INFO L93 Difference]: Finished difference Result 181 states and 395 transitions. [2020-11-12 00:08:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:08:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2020-11-12 00:08:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:01,852 INFO L225 Difference]: With dead ends: 181 [2020-11-12 00:08:01,852 INFO L226 Difference]: Without dead ends: 136 [2020-11-12 00:08:01,852 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:08:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-12 00:08:01,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2020-11-12 00:08:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.122137404580153) internal successors, (278), 131 states have internal predecessors, (278), 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) [2020-11-12 00:08:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 278 transitions. [2020-11-12 00:08:01,857 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 278 transitions. Word has length 19 [2020-11-12 00:08:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:01,858 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 278 transitions. [2020-11-12 00:08:01,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2020-11-12 00:08:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 278 transitions. [2020-11-12 00:08:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-12 00:08:01,859 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:01,859 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:01,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 00:08:01,859 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1770992257, now seen corresponding path program 1 times [2020-11-12 00:08:01,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:01,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261988726] [2020-11-12 00:08:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:01,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261988726] [2020-11-12 00:08:01,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:01,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:08:01,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336191893] [2020-11-12 00:08:01,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:08:01,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:01,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:08:01,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:08:01,932 INFO L87 Difference]: Start difference. First operand 132 states and 278 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2020-11-12 00:08:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:01,971 INFO L93 Difference]: Finished difference Result 154 states and 314 transitions. [2020-11-12 00:08:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:08:01,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2020-11-12 00:08:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:01,973 INFO L225 Difference]: With dead ends: 154 [2020-11-12 00:08:01,973 INFO L226 Difference]: Without dead ends: 93 [2020-11-12 00:08:01,974 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:08:01,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-12 00:08:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-11-12 00:08:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.8777777777777778) internal successors, (169), 90 states have internal predecessors, (169), 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) [2020-11-12 00:08:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-11-12 00:08:01,977 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-11-12 00:08:01,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:01,978 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-11-12 00:08:01,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2020-11-12 00:08:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-11-12 00:08:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-12 00:08:01,979 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:08:01,979 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:08:01,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 00:08:01,979 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:08:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:08:01,979 INFO L82 PathProgramCache]: Analyzing trace with hash 761818520, now seen corresponding path program 2 times [2020-11-12 00:08:01,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:08:01,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592468686] [2020-11-12 00:08:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:08:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:08:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:08:02,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592468686] [2020-11-12 00:08:02,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:08:02,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 00:08:02,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813825226] [2020-11-12 00:08:02,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 00:08:02,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:08:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 00:08:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:08:02,038 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2020-11-12 00:08:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:08:02,082 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-11-12 00:08:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:08:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2020-11-12 00:08:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:08:02,083 INFO L225 Difference]: With dead ends: 81 [2020-11-12 00:08:02,083 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:08:02,083 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-12 00:08:02,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:08:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:08:02,084 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) [2020-11-12 00:08:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:08:02,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-12 00:08:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:08:02,084 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:08:02,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2020-11-12 00:08:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:08:02,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:08:02,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 00:08:02,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:08:02 BasicIcfg [2020-11-12 00:08:02,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:08:02,090 INFO L168 Benchmark]: Toolchain (without parser) took 9784.44 ms. Allocated memory was 302.0 MB in the beginning and 402.7 MB in the end (delta: 100.7 MB). Free memory was 275.3 MB in the beginning and 282.1 MB in the end (delta: -6.8 MB). Peak memory consumption was 96.9 MB. Max. memory is 16.0 GB. [2020-11-12 00:08:02,090 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:08:02,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.10 ms. Allocated memory is still 302.0 MB. Free memory was 274.5 MB in the beginning and 276.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:08:02,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.65 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 274.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:08:02,092 INFO L168 Benchmark]: Boogie Preprocessor took 28.33 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 272.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:08:02,093 INFO L168 Benchmark]: RCFGBuilder took 590.38 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 248.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:08:02,093 INFO L168 Benchmark]: TraceAbstraction took 8286.33 ms. Allocated memory was 302.0 MB in the beginning and 402.7 MB in the end (delta: 100.7 MB). Free memory was 247.2 MB in the beginning and 282.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.0 GB. [2020-11-12 00:08:02,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 790.10 ms. Allocated memory is still 302.0 MB. Free memory was 274.5 MB in the beginning and 276.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 75.65 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 274.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.33 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 272.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 590.38 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 248.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8286.33 ms. Allocated memory was 302.0 MB in the beginning and 402.7 MB in the end (delta: 100.7 MB). Free memory was 247.2 MB in the beginning and 282.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1337 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 99 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.4s, 101 PlacesBefore, 39 PlacesAfterwards, 91 TransitionsBefore, 27 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 3779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 281 SDtfs, 310 SDslu, 482 SDs, 0 SdLazy, 199 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 6492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...