/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:38:59,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:38:59,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:38:59,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:38:59,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:38:59,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:38:59,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:38:59,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:38:59,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:38:59,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:38:59,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:38:59,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:38:59,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:38:59,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:38:59,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:38:59,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:38:59,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:38:59,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:38:59,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:38:59,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:39:00,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:39:00,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:39:00,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:39:00,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:39:00,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 14:39:00,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 14:39:00,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 14:39:00,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 14:39:00,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 14:39:00,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 14:39:00,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:39:00,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:39:00,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:39:00,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:39:00,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:39:00,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:39:00,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:39:00,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:39:00,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:39:00,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:39:00,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:39:00,022 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 [2021-01-20 14:39:00,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:39:00,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:39:00,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:39:00,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:39:00,054 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:39:00,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:39:00,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:39:00,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:39:00,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:39:00,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:39:00,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:39:00,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:39:00,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:39:00,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:39:00,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:39:00,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:39:00,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:39:00,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:39:00,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:39:00,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:39:00,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:39:00,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:39:00,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:39:00,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:39:00,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:39:00,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:39:00,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:39:00,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:39:00,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:39:00,060 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:39:00,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:39:00,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:39:00,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:39:00,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:39:00,571 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:39:00,572 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:39:00,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-01-20 14:39:00,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589c96914/439a64cdc9da4b37b7b241abbe594f3e/FLAG20bbcf2f9 [2021-01-20 14:39:01,554 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:39:01,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-01-20 14:39:01,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589c96914/439a64cdc9da4b37b7b241abbe594f3e/FLAG20bbcf2f9 [2021-01-20 14:39:01,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589c96914/439a64cdc9da4b37b7b241abbe594f3e [2021-01-20 14:39:01,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:39:01,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:39:01,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:39:01,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:39:01,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:39:01,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:39:01" (1/1) ... [2021-01-20 14:39:01,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdb16a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:01, skipping insertion in model container [2021-01-20 14:39:01,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:39:01" (1/1) ... [2021-01-20 14:39:01,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:39:01,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:39:02,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:39:02,413 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:39:02,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:39:02,581 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:39:02,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02 WrapperNode [2021-01-20 14:39:02,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:39:02,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:39:02,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:39:02,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:39:02,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:39:02,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:39:02,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:39:02,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:39:02,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (1/1) ... [2021-01-20 14:39:02,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:39:02,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:39:02,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:39:02,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:39:02,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (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 [2021-01-20 14:39:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:39:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:39:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:39:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:39:02,826 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:39:02,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:39:02,828 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:39:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:39:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:39:02,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:39:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:39:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:39:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:39:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:39:02,833 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:39:03,376 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:39:03,376 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:39:03,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:39:03 BoogieIcfgContainer [2021-01-20 14:39:03,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:39:03,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:39:03,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:39:03,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:39:03,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:39:01" (1/3) ... [2021-01-20 14:39:03,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7942e2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:39:03, skipping insertion in model container [2021-01-20 14:39:03,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:39:02" (2/3) ... [2021-01-20 14:39:03,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7942e2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:39:03, skipping insertion in model container [2021-01-20 14:39:03,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:39:03" (3/3) ... [2021-01-20 14:39:03,389 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2021-01-20 14:39:03,407 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:39:03,407 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:39:03,412 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:39:03,413 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:39:03,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,459 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,460 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,460 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,461 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,461 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,461 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,461 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,461 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,461 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,465 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,466 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,466 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,474 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,478 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,479 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,479 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:39:03,483 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:39:03,498 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:39:03,523 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:39:03,523 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:39:03,523 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:39:03,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:39:03,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:39:03,524 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:39:03,524 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:39:03,524 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:39:03,536 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 14:39:04,419 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2021-01-20 14:39:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2021-01-20 14:39:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:39:04,520 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:04,521 INFO L504 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] [2021-01-20 14:39:04,521 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:04,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:04,528 INFO L82 PathProgramCache]: Analyzing trace with hash -578983952, now seen corresponding path program 1 times [2021-01-20 14:39:04,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:04,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220151895] [2021-01-20 14:39:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:05,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220151895] [2021-01-20 14:39:05,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:05,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:39:05,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490396437] [2021-01-20 14:39:05,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:39:05,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:05,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:39:05,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:39:05,164 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-01-20 14:39:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:05,746 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2021-01-20 14:39:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:39:05,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2021-01-20 14:39:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:05,829 INFO L225 Difference]: With dead ends: 12199 [2021-01-20 14:39:05,830 INFO L226 Difference]: Without dead ends: 4604 [2021-01-20 14:39:05,831 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:05,832 INFO L78 Accepts]: Start accepts. Automaton has 4604 states. Word has length 41 [2021-01-20 14:39:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:05,834 INFO L481 AbstractCegarLoop]: Abstraction has 4604 states. [2021-01-20 14:39:05,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-01-20 14:39:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states. [2021-01-20 14:39:05,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:39:05,852 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:05,852 INFO L504 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] [2021-01-20 14:39:05,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:39:05,853 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:05,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1808394825, now seen corresponding path program 1 times [2021-01-20 14:39:05,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:05,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384600050] [2021-01-20 14:39:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:06,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384600050] [2021-01-20 14:39:06,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:06,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:39:06,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986332041] [2021-01-20 14:39:06,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:39:06,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:06,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:39:06,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:39:06,074 INFO L87 Difference]: Start difference. First operand 4604 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-01-20 14:39:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:06,549 INFO L93 Difference]: Finished difference Result 5472 states and 18504 transitions. [2021-01-20 14:39:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:39:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2021-01-20 14:39:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:06,591 INFO L225 Difference]: With dead ends: 5472 [2021-01-20 14:39:06,592 INFO L226 Difference]: Without dead ends: 4492 [2021-01-20 14:39:06,593 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:06,593 INFO L78 Accepts]: Start accepts. Automaton has 4492 states. Word has length 43 [2021-01-20 14:39:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:06,593 INFO L481 AbstractCegarLoop]: Abstraction has 4492 states. [2021-01-20 14:39:06,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-01-20 14:39:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states. [2021-01-20 14:39:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 14:39:06,606 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:06,607 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:39:06,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:39:06,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1762653605, now seen corresponding path program 1 times [2021-01-20 14:39:06,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:06,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434981492] [2021-01-20 14:39:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:06,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434981492] [2021-01-20 14:39:06,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:06,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:39:06,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379053193] [2021-01-20 14:39:06,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:39:06,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:06,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:39:06,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:39:06,756 INFO L87 Difference]: Start difference. First operand 4492 states. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:07,081 INFO L93 Difference]: Finished difference Result 7568 states and 25238 transitions. [2021-01-20 14:39:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:39:07,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-20 14:39:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:07,139 INFO L225 Difference]: With dead ends: 7568 [2021-01-20 14:39:07,139 INFO L226 Difference]: Without dead ends: 5164 [2021-01-20 14:39:07,140 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:07,140 INFO L78 Accepts]: Start accepts. Automaton has 5164 states. Word has length 44 [2021-01-20 14:39:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:07,141 INFO L481 AbstractCegarLoop]: Abstraction has 5164 states. [2021-01-20 14:39:07,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states. [2021-01-20 14:39:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:39:07,155 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:07,155 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:39:07,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:39:07,155 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1650393558, now seen corresponding path program 1 times [2021-01-20 14:39:07,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:07,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121853013] [2021-01-20 14:39:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:07,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121853013] [2021-01-20 14:39:07,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:07,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:39:07,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514992229] [2021-01-20 14:39:07,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:39:07,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:39:07,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:39:07,361 INFO L87 Difference]: Start difference. First operand 5164 states. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:07,679 INFO L93 Difference]: Finished difference Result 5704 states and 18613 transitions. [2021-01-20 14:39:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:39:07,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 14:39:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:07,715 INFO L225 Difference]: With dead ends: 5704 [2021-01-20 14:39:07,716 INFO L226 Difference]: Without dead ends: 4444 [2021-01-20 14:39:07,717 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:07,717 INFO L78 Accepts]: Start accepts. Automaton has 4444 states. Word has length 45 [2021-01-20 14:39:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:07,718 INFO L481 AbstractCegarLoop]: Abstraction has 4444 states. [2021-01-20 14:39:07,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states. [2021-01-20 14:39:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:39:07,738 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:07,738 INFO L504 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] [2021-01-20 14:39:07,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:39:07,738 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:07,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1010838069, now seen corresponding path program 1 times [2021-01-20 14:39:07,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:07,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769094437] [2021-01-20 14:39:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:07,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769094437] [2021-01-20 14:39:07,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:07,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:39:07,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061621836] [2021-01-20 14:39:07,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:39:07,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:07,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:39:07,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:39:07,907 INFO L87 Difference]: Start difference. First operand 4444 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-01-20 14:39:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:08,194 INFO L93 Difference]: Finished difference Result 5272 states and 17102 transitions. [2021-01-20 14:39:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:39:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2021-01-20 14:39:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:08,256 INFO L225 Difference]: With dead ends: 5272 [2021-01-20 14:39:08,256 INFO L226 Difference]: Without dead ends: 4372 [2021-01-20 14:39:08,256 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:08,257 INFO L78 Accepts]: Start accepts. Automaton has 4372 states. Word has length 47 [2021-01-20 14:39:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:08,257 INFO L481 AbstractCegarLoop]: Abstraction has 4372 states. [2021-01-20 14:39:08,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-01-20 14:39:08,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states. [2021-01-20 14:39:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:39:08,280 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:08,288 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:39:08,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:39:08,289 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:08,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1880295013, now seen corresponding path program 1 times [2021-01-20 14:39:08,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:08,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626927914] [2021-01-20 14:39:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:08,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626927914] [2021-01-20 14:39:08,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:08,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:39:08,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553170625] [2021-01-20 14:39:08,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:39:08,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:08,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:39:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:39:08,526 INFO L87 Difference]: Start difference. First operand 4372 states. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:08,745 INFO L93 Difference]: Finished difference Result 6188 states and 19948 transitions. [2021-01-20 14:39:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:39:08,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:39:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:08,760 INFO L225 Difference]: With dead ends: 6188 [2021-01-20 14:39:08,760 INFO L226 Difference]: Without dead ends: 3449 [2021-01-20 14:39:08,761 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:08,761 INFO L78 Accepts]: Start accepts. Automaton has 3449 states. Word has length 48 [2021-01-20 14:39:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:08,761 INFO L481 AbstractCegarLoop]: Abstraction has 3449 states. [2021-01-20 14:39:08,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states. [2021-01-20 14:39:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:39:08,769 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:08,769 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:39:08,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:39:08,770 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:08,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:08,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1507471679, now seen corresponding path program 2 times [2021-01-20 14:39:08,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:08,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915254608] [2021-01-20 14:39:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:08,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915254608] [2021-01-20 14:39:08,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:08,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:39:08,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120505946] [2021-01-20 14:39:08,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:39:08,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:08,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:39:08,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:39:08,967 INFO L87 Difference]: Start difference. First operand 3449 states. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:09,410 INFO L93 Difference]: Finished difference Result 5785 states and 18172 transitions. [2021-01-20 14:39:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-20 14:39:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:39:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:09,429 INFO L225 Difference]: With dead ends: 5785 [2021-01-20 14:39:09,429 INFO L226 Difference]: Without dead ends: 3381 [2021-01-20 14:39:09,430 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-01-20 14:39:09,430 INFO L78 Accepts]: Start accepts. Automaton has 3381 states. Word has length 48 [2021-01-20 14:39:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:09,431 INFO L481 AbstractCegarLoop]: Abstraction has 3381 states. [2021-01-20 14:39:09,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states. [2021-01-20 14:39:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:39:09,439 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:09,439 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:39:09,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:39:09,439 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:09,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2067721465, now seen corresponding path program 1 times [2021-01-20 14:39:09,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:09,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383330290] [2021-01-20 14:39:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:09,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383330290] [2021-01-20 14:39:09,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:09,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:39:09,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211015514] [2021-01-20 14:39:09,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:39:09,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:09,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:39:09,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:39:09,693 INFO L87 Difference]: Start difference. First operand 3381 states. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:09,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:09,908 INFO L93 Difference]: Finished difference Result 3373 states and 10403 transitions. [2021-01-20 14:39:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:39:09,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:39:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:09,915 INFO L225 Difference]: With dead ends: 3373 [2021-01-20 14:39:09,915 INFO L226 Difference]: Without dead ends: 1311 [2021-01-20 14:39:09,916 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:09,916 INFO L78 Accepts]: Start accepts. Automaton has 1311 states. Word has length 48 [2021-01-20 14:39:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:09,916 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states. [2021-01-20 14:39:09,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:09,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states. [2021-01-20 14:39:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:39:09,922 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:09,923 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:39:09,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:39:09,926 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:09,927 INFO L82 PathProgramCache]: Analyzing trace with hash 608113037, now seen corresponding path program 1 times [2021-01-20 14:39:09,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:09,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616383756] [2021-01-20 14:39:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:10,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616383756] [2021-01-20 14:39:10,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:10,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:39:10,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732497836] [2021-01-20 14:39:10,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:39:10,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:10,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:39:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:39:10,202 INFO L87 Difference]: Start difference. First operand 1311 states. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:10,415 INFO L93 Difference]: Finished difference Result 1502 states and 4502 transitions. [2021-01-20 14:39:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:39:10,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:39:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:10,422 INFO L225 Difference]: With dead ends: 1502 [2021-01-20 14:39:10,422 INFO L226 Difference]: Without dead ends: 1166 [2021-01-20 14:39:10,423 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:39:10,423 INFO L78 Accepts]: Start accepts. Automaton has 1166 states. Word has length 49 [2021-01-20 14:39:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:10,424 INFO L481 AbstractCegarLoop]: Abstraction has 1166 states. [2021-01-20 14:39:10,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:39:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states. [2021-01-20 14:39:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:39:10,427 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:10,427 INFO L504 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] [2021-01-20 14:39:10,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 14:39:10,427 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:10,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1984353874, now seen corresponding path program 1 times [2021-01-20 14:39:10,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:10,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412978121] [2021-01-20 14:39:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:10,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412978121] [2021-01-20 14:39:10,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:10,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:39:10,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930253352] [2021-01-20 14:39:10,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:39:10,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:10,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:39:10,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:39:10,594 INFO L87 Difference]: Start difference. First operand 1166 states. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-01-20 14:39:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:10,870 INFO L93 Difference]: Finished difference Result 998 states and 2873 transitions. [2021-01-20 14:39:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:39:10,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 [2021-01-20 14:39:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:10,874 INFO L225 Difference]: With dead ends: 998 [2021-01-20 14:39:10,874 INFO L226 Difference]: Without dead ends: 746 [2021-01-20 14:39:10,875 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:39:10,875 INFO L78 Accepts]: Start accepts. Automaton has 746 states. Word has length 50 [2021-01-20 14:39:10,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:10,876 INFO L481 AbstractCegarLoop]: Abstraction has 746 states. [2021-01-20 14:39:10,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-01-20 14:39:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states. [2021-01-20 14:39:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:39:10,878 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:39:10,878 INFO L504 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] [2021-01-20 14:39:10,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 14:39:10,878 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:39:10,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:39:10,879 INFO L82 PathProgramCache]: Analyzing trace with hash -126840041, now seen corresponding path program 1 times [2021-01-20 14:39:10,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:39:10,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532278010] [2021-01-20 14:39:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:39:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:39:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:39:11,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532278010] [2021-01-20 14:39:11,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:39:11,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:39:11,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259767206] [2021-01-20 14:39:11,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:39:11,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:39:11,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:39:11,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:39:11,054 INFO L87 Difference]: Start difference. First operand 746 states. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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) [2021-01-20 14:39:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:39:11,250 INFO L93 Difference]: Finished difference Result 359 states and 935 transitions. [2021-01-20 14:39:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 14:39:11,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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 51 [2021-01-20 14:39:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:39:11,251 INFO L225 Difference]: With dead ends: 359 [2021-01-20 14:39:11,251 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:39:11,252 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:39:11,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 51 [2021-01-20 14:39:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:39:11,252 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:39:11,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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) [2021-01-20 14:39:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:39:11,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:39:11,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-20 14:39:11,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:39:11 BasicIcfg [2021-01-20 14:39:11,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:39:11,261 INFO L168 Benchmark]: Toolchain (without parser) took 9483.89 ms. Allocated memory was 308.3 MB in the beginning and 658.5 MB in the end (delta: 350.2 MB). Free memory was 284.0 MB in the beginning and 423.7 MB in the end (delta: -139.7 MB). Peak memory consumption was 213.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:39:11,262 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 308.3 MB. Free memory is still 278.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:39:11,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.91 ms. Allocated memory is still 308.3 MB. Free memory was 283.7 MB in the beginning and 252.3 MB in the end (delta: 31.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:39:11,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.62 ms. Allocated memory is still 308.3 MB. Free memory was 252.3 MB in the beginning and 250.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:39:11,264 INFO L168 Benchmark]: Boogie Preprocessor took 64.02 ms. Allocated memory is still 308.3 MB. Free memory was 250.4 MB in the beginning and 291.3 MB in the end (delta: -40.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:39:11,265 INFO L168 Benchmark]: RCFGBuilder took 677.61 ms. Allocated memory is still 308.3 MB. Free memory was 291.3 MB in the beginning and 269.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:39:11,266 INFO L168 Benchmark]: TraceAbstraction took 7877.49 ms. Allocated memory was 308.3 MB in the beginning and 658.5 MB in the end (delta: 350.2 MB). Free memory was 268.1 MB in the beginning and 423.7 MB in the end (delta: -155.6 MB). Peak memory consumption was 196.7 MB. Max. memory is 16.0 GB. [2021-01-20 14:39:11,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 308.3 MB. Free memory is still 278.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 799.91 ms. Allocated memory is still 308.3 MB. Free memory was 283.7 MB in the beginning and 252.3 MB in the end (delta: 31.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.62 ms. Allocated memory is still 308.3 MB. Free memory was 252.3 MB in the beginning and 250.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 64.02 ms. Allocated memory is still 308.3 MB. Free memory was 250.4 MB in the beginning and 291.3 MB in the end (delta: -40.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * RCFGBuilder took 677.61 ms. Allocated memory is still 308.3 MB. Free memory was 291.3 MB in the beginning and 269.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7877.49 ms. Allocated memory was 308.3 MB in the beginning and 658.5 MB in the end (delta: 350.2 MB). Free memory was 268.1 MB in the beginning and 423.7 MB in the end (delta: -155.6 MB). Peak memory consumption was 196.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 1086 SDtfs, 1264 SDslu, 3384 SDs, 0 SdLazy, 349 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 514 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 63547 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...