/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:21:38,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:21:38,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:21:38,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:21:38,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:21:38,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:21:38,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:21:38,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:21:38,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:21:38,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:21:38,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:21:38,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:21:38,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:21:38,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:21:38,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:21:38,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:21:38,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:21:38,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:21:38,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:21:38,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:21:38,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:21:38,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:21:38,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:21:38,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:21:38,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:21:38,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:21:38,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:21:38,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:21:38,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:21:38,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:21:38,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:21:38,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:21:38,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:21:38,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:21:38,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:21:38,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:21:38,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:21:38,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:21:38,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:21:38,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:21:38,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:21:38,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:21:38,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:21:38,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:21:38,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:21:38,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:21:38,684 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:21:38,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:21:38,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:21:38,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:21:38,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:21:38,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:21:38,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:21:38,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:21:38,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:21:38,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:21:38,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:21:38,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:21:38,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:21:38,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:21:38,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:21:38,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:21:38,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:21:38,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:21:38,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:21:38,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:21:38,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:21:38,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:21:38,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:21:38,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:21:38,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:21:38,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:21:38,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:21:38,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:21:38,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:21:38,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:21:38,979 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:21:38,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-10-16 11:21:39,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e5888cad/c174d68f0f73442c98b6584af8398292/FLAG3ed9dbf16 [2020-10-16 11:21:39,618 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:21:39,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-10-16 11:21:39,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e5888cad/c174d68f0f73442c98b6584af8398292/FLAG3ed9dbf16 [2020-10-16 11:21:40,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e5888cad/c174d68f0f73442c98b6584af8398292 [2020-10-16 11:21:40,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:21:40,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:21:40,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:21:40,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:21:40,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:21:40,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12829fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40, skipping insertion in model container [2020-10-16 11:21:40,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:21:40,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:21:40,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:21:40,555 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:21:40,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:21:40,718 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:21:40,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40 WrapperNode [2020-10-16 11:21:40,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:21:40,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:21:40,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:21:40,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:21:40,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:21:40,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:21:40,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:21:40,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:21:40,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... [2020-10-16 11:21:40,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:21:40,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:21:40,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:21:40,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:21:40,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:21:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:21:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:21:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:21:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:21:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:21:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:21:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:21:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:21:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:21:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:21:40,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:21:40,912 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:21:41,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:21:41,188 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:21:41,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:21:41 BoogieIcfgContainer [2020-10-16 11:21:41,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:21:41,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:21:41,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:21:41,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:21:41,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:21:40" (1/3) ... [2020-10-16 11:21:41,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd00369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:21:41, skipping insertion in model container [2020-10-16 11:21:41,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:40" (2/3) ... [2020-10-16 11:21:41,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd00369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:21:41, skipping insertion in model container [2020-10-16 11:21:41,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:21:41" (3/3) ... [2020-10-16 11:21:41,204 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2020-10-16 11:21:41,219 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:21:41,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:21:41,229 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:21:41,230 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:21:41,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,283 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,287 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,299 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,325 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:21:41,329 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:21:41,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 11:21:41,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:21:41,361 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:21:41,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:21:41,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:21:41,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:21:41,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:21:41,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:21:41,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:21:41,376 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:21:41,379 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-10-16 11:21:41,382 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 54 transitions, 118 flow [2020-10-16 11:21:41,384 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-10-16 11:21:41,424 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-10-16 11:21:41,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:21:41,429 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 11:21:41,431 INFO L117 LiptonReduction]: Number of co-enabled transitions 672 [2020-10-16 11:21:42,838 INFO L132 LiptonReduction]: Checked pairs total: 1338 [2020-10-16 11:21:42,839 INFO L134 LiptonReduction]: Total number of compositions: 48 [2020-10-16 11:21:42,846 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-16 11:21:42,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-16 11:21:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-16 11:21:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:21:42,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:42,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 11:21:42,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:42,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:42,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-10-16 11:21:42,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:42,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805381302] [2020-10-16 11:21:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:43,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805381302] [2020-10-16 11:21:43,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:43,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:21:43,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612655353] [2020-10-16 11:21:43,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:21:43,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:43,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:21:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,098 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-16 11:21:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:43,132 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-10-16 11:21:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:21:43,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-16 11:21:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:43,145 INFO L225 Difference]: With dead ends: 72 [2020-10-16 11:21:43,145 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 11:21:43,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 11:21:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-16 11:21:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-16 11:21:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-10-16 11:21:43,189 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-10-16 11:21:43,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:43,189 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-10-16 11:21:43,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:21:43,190 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-10-16 11:21:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:21:43,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:43,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:43,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:21:43,191 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:43,192 INFO L82 PathProgramCache]: Analyzing trace with hash 343673099, now seen corresponding path program 1 times [2020-10-16 11:21:43,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:43,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235474402] [2020-10-16 11:21:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:43,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235474402] [2020-10-16 11:21:43,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:43,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:21:43,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610524853] [2020-10-16 11:21:43,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:21:43,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:43,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:21:43,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,250 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-10-16 11:21:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:43,262 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-10-16 11:21:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:21:43,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 11:21:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:43,264 INFO L225 Difference]: With dead ends: 55 [2020-10-16 11:21:43,264 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 11:21:43,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 11:21:43,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 11:21:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 11:21:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-10-16 11:21:43,273 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-10-16 11:21:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:43,274 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-10-16 11:21:43,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:21:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-10-16 11:21:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:21:43,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:43,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:43,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:21:43,275 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:43,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-10-16 11:21:43,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:43,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350047865] [2020-10-16 11:21:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:43,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350047865] [2020-10-16 11:21:43,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:43,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:21:43,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860754028] [2020-10-16 11:21:43,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:21:43,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:43,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:21:43,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:21:43,384 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-10-16 11:21:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:43,428 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-10-16 11:21:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:21:43,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 11:21:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:43,430 INFO L225 Difference]: With dead ends: 56 [2020-10-16 11:21:43,430 INFO L226 Difference]: Without dead ends: 40 [2020-10-16 11:21:43,430 INFO L677 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 [2020-10-16 11:21:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-16 11:21:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-16 11:21:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 11:21:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-16 11:21:43,437 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-10-16 11:21:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:43,437 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-16 11:21:43,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:21:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-16 11:21:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:21:43,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:43,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:43,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:21:43,439 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:43,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:43,440 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-10-16 11:21:43,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:43,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992403923] [2020-10-16 11:21:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:43,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992403923] [2020-10-16 11:21:43,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:43,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:21:43,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65105356] [2020-10-16 11:21:43,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:21:43,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:43,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:21:43,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,476 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-10-16 11:21:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:43,484 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-10-16 11:21:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:21:43,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:21:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:43,486 INFO L225 Difference]: With dead ends: 51 [2020-10-16 11:21:43,486 INFO L226 Difference]: Without dead ends: 41 [2020-10-16 11:21:43,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-16 11:21:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-16 11:21:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-16 11:21:43,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-10-16 11:21:43,492 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-10-16 11:21:43,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:43,492 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-10-16 11:21:43,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:21:43,492 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-10-16 11:21:43,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:21:43,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:43,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:43,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:21:43,494 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:43,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-10-16 11:21:43,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:43,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274661014] [2020-10-16 11:21:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:43,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274661014] [2020-10-16 11:21:43,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:43,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:21:43,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703129900] [2020-10-16 11:21:43,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:21:43,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:21:43,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,569 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-10-16 11:21:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:43,595 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-10-16 11:21:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:21:43,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 11:21:43,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:43,598 INFO L225 Difference]: With dead ends: 42 [2020-10-16 11:21:43,598 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 11:21:43,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:21:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 11:21:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-16 11:21:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-16 11:21:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-10-16 11:21:43,608 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-10-16 11:21:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:43,608 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-10-16 11:21:43,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:21:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-10-16 11:21:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:21:43,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:21:43,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:21:43,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:21:43,610 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:21:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:21:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-10-16 11:21:43,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:21:43,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258417866] [2020-10-16 11:21:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:21:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:21:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:21:43,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258417866] [2020-10-16 11:21:43,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:21:43,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:21:43,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946060119] [2020-10-16 11:21:43,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:21:43,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:21:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:21:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:21:43,667 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-10-16 11:21:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:21:43,687 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-10-16 11:21:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:21:43,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 11:21:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:21:43,688 INFO L225 Difference]: With dead ends: 25 [2020-10-16 11:21:43,688 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:21:43,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:21:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:21:43,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:21:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:21:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:21:43,690 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-16 11:21:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:21:43,690 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:21:43,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:21:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:21:43,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:21:43,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:21:43,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:21:43 BasicIcfg [2020-10-16 11:21:43,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:21:43,697 INFO L168 Benchmark]: Toolchain (without parser) took 3656.96 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 101.3 MB in the beginning and 144.6 MB in the end (delta: -43.3 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:43,699 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-16 11:21:43,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.18 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.1 MB in the beginning and 158.8 MB in the end (delta: -57.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:43,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.86 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:43,701 INFO L168 Benchmark]: Boogie Preprocessor took 40.16 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:43,702 INFO L168 Benchmark]: RCFGBuilder took 357.08 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 135.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:43,703 INFO L168 Benchmark]: TraceAbstraction took 2501.19 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 135.5 MB in the beginning and 144.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:21:43,708 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.18 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.1 MB in the beginning and 158.8 MB in the end (delta: -57.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.86 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.16 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.08 ms. Allocated memory is still 201.9 MB. Free memory was 155.5 MB in the beginning and 135.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2501.19 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 135.5 MB in the beginning and 144.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 486 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 38 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 59 PlacesBefore, 22 PlacesAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 48 TotalNumberOfCompositions, 1338 MoverChecksTotal - PositiveResult [Line: 7]: 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 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 79 SDtfs, 33 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...