/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:24:14,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:24:14,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:24:14,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:24:14,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:24:14,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:24:14,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:24:14,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 17:24:14,628 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:24:14,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:24:14,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:24:14,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:24:14,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:24:14,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:24:14,630 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:24:14,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:24:14,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:24:14,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:24:14,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:24:14,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:24:14,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:24:14,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:24:14,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:24:14,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:24:14,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:24:14,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:24:14,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:24:14,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:24:14,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:24:14,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:24:14,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:24:14,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:24:14,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:24:14,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:24:14,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:24:14,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:24:14,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:24:14,633 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:24:14,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:24:14,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:24:14,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:24:14,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:24:14,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:24:14,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:24:14,941 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:24:14,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2021-06-12 17:24:15,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872884c4b/59e77b4e628a4bf59e0932c039b8bca4/FLAG80a010860 [2021-06-12 17:24:15,417 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:24:15,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2021-06-12 17:24:15,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872884c4b/59e77b4e628a4bf59e0932c039b8bca4/FLAG80a010860 [2021-06-12 17:24:15,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872884c4b/59e77b4e628a4bf59e0932c039b8bca4 [2021-06-12 17:24:15,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:24:15,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:24:15,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:24:15,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:24:15,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:24:15,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:24:15" (1/1) ... [2021-06-12 17:24:15,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6ada05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:15, skipping insertion in model container [2021-06-12 17:24:15,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:24:15" (1/1) ... [2021-06-12 17:24:15,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:24:15,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:24:15,919 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i[952,965] [2021-06-12 17:24:16,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:24:16,094 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:24:16,105 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i[952,965] [2021-06-12 17:24:16,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:24:16,200 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:24:16,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16 WrapperNode [2021-06-12 17:24:16,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:24:16,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:24:16,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:24:16,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:24:16,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:24:16,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:24:16,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:24:16,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:24:16,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... [2021-06-12 17:24:16,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:24:16,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:24:16,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:24:16,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:24:16,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:24:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:24:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:24:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:24:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:24:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:24:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:24:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:24:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:24:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:24:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:24:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:24:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:24:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:24:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:24:16,361 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:24:16,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:24:16,743 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:24:16,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:24:16 BoogieIcfgContainer [2021-06-12 17:24:16,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:24:16,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:24:16,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:24:16,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:24:16,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:24:15" (1/3) ... [2021-06-12 17:24:16,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efde141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:24:16, skipping insertion in model container [2021-06-12 17:24:16,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:24:16" (2/3) ... [2021-06-12 17:24:16,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efde141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:24:16, skipping insertion in model container [2021-06-12 17:24:16,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:24:16" (3/3) ... [2021-06-12 17:24:16,754 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_power.oepc.i [2021-06-12 17:24:16,763 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:24:16,763 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:24:16,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:24:16,764 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:24:16,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,794 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,794 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,798 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,802 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,802 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,803 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,803 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,804 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,804 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,804 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,804 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,804 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,805 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,805 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,805 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,806 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,813 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,813 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:24:16,819 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:24:16,846 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:24:16,871 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:24:16,871 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:24:16,871 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:24:16,871 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:24:16,871 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:24:16,871 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:24:16,871 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:24:16,871 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:24:16,884 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-06-12 17:24:17,413 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-12 17:24:17,523 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:24:17,523 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:24:17,524 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:24:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:24:17,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1743011939, now seen corresponding path program 1 times [2021-06-12 17:24:17,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:24:17,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914131002] [2021-06-12 17:24:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:24:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:24:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:24:17,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:24:17,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914131002] [2021-06-12 17:24:17,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914131002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:24:17,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:24:17,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:24:17,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495719609] [2021-06-12 17:24:17,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:24:17,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:24:17,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:24:17,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:24:17,923 INFO L87 Difference]: Start difference. First operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:24:18,167 INFO L93 Difference]: Finished difference Result 9297 states and 31541 transitions. [2021-06-12 17:24:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:24:18,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-12 17:24:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:24:18,221 INFO L225 Difference]: With dead ends: 9297 [2021-06-12 17:24:18,222 INFO L226 Difference]: Without dead ends: 4513 [2021-06-12 17:24:18,223 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:24:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-06-12 17:24:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4513. [2021-06-12 17:24:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4512 states have (on average 3.3324468085106385) internal successors, (15036), 4512 states have internal predecessors, (15036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 15036 transitions. [2021-06-12 17:24:18,506 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 15036 transitions. Word has length 50 [2021-06-12 17:24:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:24:18,507 INFO L482 AbstractCegarLoop]: Abstraction has 4513 states and 15036 transitions. [2021-06-12 17:24:18,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 15036 transitions. [2021-06-12 17:24:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:24:18,517 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:24:18,517 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:24:18,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:24:18,517 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:24:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:24:18,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1473884635, now seen corresponding path program 1 times [2021-06-12 17:24:18,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:24:18,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123407447] [2021-06-12 17:24:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:24:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:24:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:24:18,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:24:18,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123407447] [2021-06-12 17:24:18,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123407447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:24:18,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:24:18,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:24:18,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974948046] [2021-06-12 17:24:18,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:24:18,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:24:18,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:24:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:24:18,731 INFO L87 Difference]: Start difference. First operand 4513 states and 15036 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:24:18,927 INFO L93 Difference]: Finished difference Result 4045 states and 12969 transitions. [2021-06-12 17:24:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:24:18,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-12 17:24:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:24:18,946 INFO L225 Difference]: With dead ends: 4045 [2021-06-12 17:24:18,946 INFO L226 Difference]: Without dead ends: 2929 [2021-06-12 17:24:18,947 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:24:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2021-06-12 17:24:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2929. [2021-06-12 17:24:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2928 states have (on average 3.151639344262295) internal successors, (9228), 2928 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 9228 transitions. [2021-06-12 17:24:19,075 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 9228 transitions. Word has length 54 [2021-06-12 17:24:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:24:19,076 INFO L482 AbstractCegarLoop]: Abstraction has 2929 states and 9228 transitions. [2021-06-12 17:24:19,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 9228 transitions. [2021-06-12 17:24:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:24:19,087 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:24:19,087 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:24:19,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:24:19,087 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:24:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:24:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash 881641083, now seen corresponding path program 1 times [2021-06-12 17:24:19,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:24:19,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134778769] [2021-06-12 17:24:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:24:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:24:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:24:19,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:24:19,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134778769] [2021-06-12 17:24:19,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134778769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:24:19,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:24:19,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:24:19,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671217908] [2021-06-12 17:24:19,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:24:19,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:24:19,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:24:19,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:24:19,233 INFO L87 Difference]: Start difference. First operand 2929 states and 9228 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:24:19,392 INFO L93 Difference]: Finished difference Result 2281 states and 7005 transitions. [2021-06-12 17:24:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:24:19,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-12 17:24:19,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:24:19,402 INFO L225 Difference]: With dead ends: 2281 [2021-06-12 17:24:19,402 INFO L226 Difference]: Without dead ends: 1741 [2021-06-12 17:24:19,403 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:24:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-06-12 17:24:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2021-06-12 17:24:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 3.027586206896552) internal successors, (5268), 1740 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 5268 transitions. [2021-06-12 17:24:19,454 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 5268 transitions. Word has length 58 [2021-06-12 17:24:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:24:19,456 INFO L482 AbstractCegarLoop]: Abstraction has 1741 states and 5268 transitions. [2021-06-12 17:24:19,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 5268 transitions. [2021-06-12 17:24:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-12 17:24:19,459 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:24:19,459 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:24:19,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:24:19,460 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:24:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:24:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2050639681, now seen corresponding path program 1 times [2021-06-12 17:24:19,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:24:19,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611219802] [2021-06-12 17:24:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:24:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:24:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:24:19,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:24:19,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611219802] [2021-06-12 17:24:19,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611219802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:24:19,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:24:19,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:24:19,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20887511] [2021-06-12 17:24:19,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:24:19,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:24:19,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:24:19,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:24:19,667 INFO L87 Difference]: Start difference. First operand 1741 states and 5268 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:24:19,767 INFO L93 Difference]: Finished difference Result 2404 states and 7288 transitions. [2021-06-12 17:24:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:24:19,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-12 17:24:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:24:19,776 INFO L225 Difference]: With dead ends: 2404 [2021-06-12 17:24:19,777 INFO L226 Difference]: Without dead ends: 1713 [2021-06-12 17:24:19,777 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:24:19,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-06-12 17:24:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1485. [2021-06-12 17:24:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 2.967654986522911) internal successors, (4404), 1484 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4404 transitions. [2021-06-12 17:24:19,816 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4404 transitions. Word has length 62 [2021-06-12 17:24:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:24:19,818 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4404 transitions. [2021-06-12 17:24:19,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4404 transitions. [2021-06-12 17:24:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-12 17:24:19,823 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:24:19,823 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:24:19,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:24:19,823 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:24:19,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:24:19,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1003477565, now seen corresponding path program 2 times [2021-06-12 17:24:19,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:24:19,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744931540] [2021-06-12 17:24:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:24:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:24:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:24:19,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:24:19,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744931540] [2021-06-12 17:24:19,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744931540] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:24:19,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:24:19,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:24:19,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095552278] [2021-06-12 17:24:19,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:24:19,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:24:19,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:24:19,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:24:19,968 INFO L87 Difference]: Start difference. First operand 1485 states and 4404 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:24:20,058 INFO L93 Difference]: Finished difference Result 2100 states and 6260 transitions. [2021-06-12 17:24:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:24:20,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-12 17:24:20,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:24:20,065 INFO L225 Difference]: With dead ends: 2100 [2021-06-12 17:24:20,065 INFO L226 Difference]: Without dead ends: 1301 [2021-06-12 17:24:20,066 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:24:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2021-06-12 17:24:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1121. [2021-06-12 17:24:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 2.9214285714285713) internal successors, (3272), 1120 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 3272 transitions. [2021-06-12 17:24:20,093 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 3272 transitions. Word has length 62 [2021-06-12 17:24:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:24:20,093 INFO L482 AbstractCegarLoop]: Abstraction has 1121 states and 3272 transitions. [2021-06-12 17:24:20,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 3272 transitions. [2021-06-12 17:24:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-12 17:24:20,096 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:24:20,096 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:24:20,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:24:20,096 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:24:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:24:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1528285661, now seen corresponding path program 3 times [2021-06-12 17:24:20,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:24:20,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014564095] [2021-06-12 17:24:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:24:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:24:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:24:20,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:24:20,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014564095] [2021-06-12 17:24:20,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014564095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:24:20,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:24:20,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:24:20,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83667231] [2021-06-12 17:24:20,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:24:20,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:24:20,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:24:20,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:24:20,243 INFO L87 Difference]: Start difference. First operand 1121 states and 3272 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:24:20,334 INFO L93 Difference]: Finished difference Result 1640 states and 4800 transitions. [2021-06-12 17:24:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:24:20,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 62 [2021-06-12 17:24:20,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:24:20,339 INFO L225 Difference]: With dead ends: 1640 [2021-06-12 17:24:20,340 INFO L226 Difference]: Without dead ends: 1002 [2021-06-12 17:24:20,340 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-12 17:24:20,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-06-12 17:24:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2021-06-12 17:24:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1001 states have (on average 2.8931068931068933) internal successors, (2896), 1001 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 2896 transitions. [2021-06-12 17:24:20,361 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 2896 transitions. Word has length 62 [2021-06-12 17:24:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:24:20,361 INFO L482 AbstractCegarLoop]: Abstraction has 1002 states and 2896 transitions. [2021-06-12 17:24:20,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 2896 transitions. [2021-06-12 17:24:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-12 17:24:20,363 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:24:20,364 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:24:20,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:24:20,364 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:24:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:24:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash 130918569, now seen corresponding path program 4 times [2021-06-12 17:24:20,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:24:20,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842666927] [2021-06-12 17:24:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:24:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:24:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:24:20,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:24:20,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842666927] [2021-06-12 17:24:20,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842666927] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:24:20,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:24:20,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:24:20,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318267218] [2021-06-12 17:24:20,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:24:20,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:24:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:24:20,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:24:20,472 INFO L87 Difference]: Start difference. First operand 1002 states and 2896 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:24:20,534 INFO L93 Difference]: Finished difference Result 948 states and 2734 transitions. [2021-06-12 17:24:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:24:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-12 17:24:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:24:20,535 INFO L225 Difference]: With dead ends: 948 [2021-06-12 17:24:20,535 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:24:20,536 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:24:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:24:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:24:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:24:20,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-06-12 17:24:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:24:20,537 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:24:20,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:24:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:24:20,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:24:20,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:24:20,539 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:24:20,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:24:20 BasicIcfg [2021-06-12 17:24:20,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:24:20,546 INFO L168 Benchmark]: Toolchain (without parser) took 4795.68 ms. Allocated memory was 183.5 MB in the beginning and 362.8 MB in the end (delta: 179.3 MB). Free memory was 148.0 MB in the beginning and 255.7 MB in the end (delta: -107.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 8.0 GB. [2021-06-12 17:24:20,546 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 183.5 MB. Free memory was 166.0 MB in the beginning and 165.9 MB in the end (delta: 105.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:24:20,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.40 ms. Allocated memory is still 183.5 MB. Free memory was 147.8 MB in the beginning and 146.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:24:20,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.02 ms. Allocated memory is still 183.5 MB. Free memory was 146.2 MB in the beginning and 144.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:24:20,549 INFO L168 Benchmark]: Boogie Preprocessor took 19.39 ms. Allocated memory is still 183.5 MB. Free memory was 144.1 MB in the beginning and 142.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:24:20,549 INFO L168 Benchmark]: RCFGBuilder took 490.19 ms. Allocated memory is still 183.5 MB. Free memory was 142.6 MB in the beginning and 119.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:24:20,550 INFO L168 Benchmark]: TraceAbstraction took 3794.22 ms. Allocated memory was 183.5 MB in the beginning and 362.8 MB in the end (delta: 179.3 MB). Free memory was 118.5 MB in the beginning and 255.7 MB in the end (delta: -137.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:24:20,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 183.5 MB. Free memory was 166.0 MB in the beginning and 165.9 MB in the end (delta: 105.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 451.40 ms. Allocated memory is still 183.5 MB. Free memory was 147.8 MB in the beginning and 146.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 33.02 ms. Allocated memory is still 183.5 MB. Free memory was 146.2 MB in the beginning and 144.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.39 ms. Allocated memory is still 183.5 MB. Free memory was 144.1 MB in the beginning and 142.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 490.19 ms. Allocated memory is still 183.5 MB. Free memory was 142.6 MB in the beginning and 119.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3794.22 ms. Allocated memory was 183.5 MB in the beginning and 362.8 MB in the end (delta: 179.3 MB). Free memory was 118.5 MB in the beginning and 255.7 MB in the end (delta: -137.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3669.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 140.0ms, AutomataDifference: 1099.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 542.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 742 SDtfs, 921 SDslu, 2804 SDs, 0 SdLazy, 266 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 193.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 769.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9333occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 538.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 408 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 52.5ms SsaConstructionTime, 195.9ms SatisfiabilityAnalysisTime, 927.1ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...