/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:13:26,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:13:26,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:13:26,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:13:26,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:13:26,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:13:26,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:13:26,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:13:26,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:13:26,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:13:26,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:13:26,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:13:26,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:13:26,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:13:26,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:13:26,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:13:26,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:13:26,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:13:26,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:13:26,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:13:26,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:13:26,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:13:26,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:13:26,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:13:26,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:13:26,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:13:26,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:13:26,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:13:26,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:13:26,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:13:26,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:13:26,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:13:26,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:13:26,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:13:26,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:13:26,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:13:26,319 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 [2020-11-11 18:13:26,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:13:26,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:13:26,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:13:26,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:13:26,376 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:13:26,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:13:26,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:13:26,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:13:26,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:13:26,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:13:26,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:13:26,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:13:26,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:13:26,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:13:26,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:13:26,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:13:26,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:13:26,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:13:26,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:13:26,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:13:26,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:13:26,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:13:26,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:13:26,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:13:26,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:13:26,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:13:26,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:13:26,383 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:13:26,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:13:26,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:13:26,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:13:26,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:13:26,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:13:26,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:13:26,891 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:13:26,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-11-11 18:13:26,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc682b14/310656447d8942edb73a0a519feedbba/FLAGe1a7722de [2020-11-11 18:13:27,762 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:13:27,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-11-11 18:13:27,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc682b14/310656447d8942edb73a0a519feedbba/FLAGe1a7722de [2020-11-11 18:13:28,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc682b14/310656447d8942edb73a0a519feedbba [2020-11-11 18:13:28,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:13:28,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:13:28,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:13:28,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:13:28,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:13:28,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e41c238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28, skipping insertion in model container [2020-11-11 18:13:28,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:13:28,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:13:28,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:13:28,524 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:13:28,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:13:28,682 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:13:28,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28 WrapperNode [2020-11-11 18:13:28,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:13:28,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:13:28,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:13:28,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:13:28,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:13:28,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:13:28,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:13:28,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:13:28,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... [2020-11-11 18:13:28,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:13:28,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:13:28,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:13:28,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:13:28,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:13:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:13:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:13:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:13:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:13:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:13:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:13:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:13:28,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:13:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:13:28,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:13:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:13:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:13:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:13:28,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:13:28,920 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:13:29,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:13:29,473 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:13:29,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:13:29 BoogieIcfgContainer [2020-11-11 18:13:29,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:13:29,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:13:29,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:13:29,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:13:29,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:13:28" (1/3) ... [2020-11-11 18:13:29,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c7c1b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:13:29, skipping insertion in model container [2020-11-11 18:13:29,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:13:28" (2/3) ... [2020-11-11 18:13:29,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c7c1b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:13:29, skipping insertion in model container [2020-11-11 18:13:29,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:13:29" (3/3) ... [2020-11-11 18:13:29,486 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-11-11 18:13:29,505 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:13:29,505 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:13:29,509 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:13:29,511 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:13:29,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,550 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,554 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,554 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,555 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,555 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:13:29,574 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:13:29,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:13:29,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:13:29,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:13:29,614 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:13:29,614 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:13:29,614 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:13:29,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:13:29,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:13:29,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:13:29,629 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 18:13:30,524 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:13:30,622 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:30,623 INFO L494 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] [2020-11-11 18:13:30,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:30,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1953454049, now seen corresponding path program 1 times [2020-11-11 18:13:30,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:30,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343080877] [2020-11-11 18:13:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:31,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343080877] [2020-11-11 18:13:31,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:31,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:13:31,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788629427] [2020-11-11 18:13:31,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:13:31,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:31,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:13:31,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:13:31,280 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:31,695 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2020-11-11 18:13:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:13:31,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2020-11-11 18:13:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:31,763 INFO L225 Difference]: With dead ends: 12200 [2020-11-11 18:13:31,764 INFO L226 Difference]: Without dead ends: 4605 [2020-11-11 18:13:31,766 INFO L749 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 [2020-11-11 18:13:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2020-11-11 18:13:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4605. [2020-11-11 18:13:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4605 states, 4604 states have (on average 3.415291051259774) internal successors, (15724), 4604 states have internal predecessors, (15724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 15724 transitions. [2020-11-11 18:13:32,396 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 15724 transitions. Word has length 42 [2020-11-11 18:13:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:32,397 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states and 15724 transitions. [2020-11-11 18:13:32,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 15724 transitions. [2020-11-11 18:13:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:13:32,415 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:32,415 INFO L494 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] [2020-11-11 18:13:32,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:13:32,416 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1502808140, now seen corresponding path program 1 times [2020-11-11 18:13:32,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:32,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968438288] [2020-11-11 18:13:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:32,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968438288] [2020-11-11 18:13:32,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:32,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:13:32,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418349326] [2020-11-11 18:13:32,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:13:32,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:32,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:13:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:13:32,582 INFO L87 Difference]: Start difference. First operand 4605 states and 15724 transitions. 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) [2020-11-11 18:13:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:32,958 INFO L93 Difference]: Finished difference Result 5193 states and 17516 transitions. [2020-11-11 18:13:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:13:32,958 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 [2020-11-11 18:13:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:32,998 INFO L225 Difference]: With dead ends: 5193 [2020-11-11 18:13:32,998 INFO L226 Difference]: Without dead ends: 4213 [2020-11-11 18:13:32,999 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:13:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2020-11-11 18:13:33,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4213. [2020-11-11 18:13:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 4212 states have (on average 3.3874643874643873) internal successors, (14268), 4212 states have internal predecessors, (14268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 14268 transitions. [2020-11-11 18:13:33,270 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 14268 transitions. Word has length 44 [2020-11-11 18:13:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:33,270 INFO L481 AbstractCegarLoop]: Abstraction has 4213 states and 14268 transitions. [2020-11-11 18:13:33,271 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) [2020-11-11 18:13:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 14268 transitions. [2020-11-11 18:13:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:13:33,287 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:33,287 INFO L494 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] [2020-11-11 18:13:33,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:13:33,287 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2080522916, now seen corresponding path program 1 times [2020-11-11 18:13:33,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:33,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229692871] [2020-11-11 18:13:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:33,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229692871] [2020-11-11 18:13:33,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:33,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:13:33,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845079237] [2020-11-11 18:13:33,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:13:33,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:33,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:13:33,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:13:33,498 INFO L87 Difference]: Start difference. First operand 4213 states and 14268 transitions. 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) [2020-11-11 18:13:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:33,738 INFO L93 Difference]: Finished difference Result 4549 states and 15228 transitions. [2020-11-11 18:13:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:13:33,739 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 [2020-11-11 18:13:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:33,772 INFO L225 Difference]: With dead ends: 4549 [2020-11-11 18:13:33,773 INFO L226 Difference]: Without dead ends: 3765 [2020-11-11 18:13:33,773 INFO L749 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 [2020-11-11 18:13:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2020-11-11 18:13:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3765. [2020-11-11 18:13:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 3.3613177470775772) internal successors, (12652), 3764 states have internal predecessors, (12652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 12652 transitions. [2020-11-11 18:13:33,925 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 12652 transitions. Word has length 45 [2020-11-11 18:13:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:33,925 INFO L481 AbstractCegarLoop]: Abstraction has 3765 states and 12652 transitions. [2020-11-11 18:13:33,926 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) [2020-11-11 18:13:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 12652 transitions. [2020-11-11 18:13:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:13:33,937 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:33,937 INFO L494 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] [2020-11-11 18:13:33,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:13:33,937 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:33,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:33,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1485652643, now seen corresponding path program 1 times [2020-11-11 18:13:33,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:33,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995882606] [2020-11-11 18:13:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:34,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995882606] [2020-11-11 18:13:34,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:34,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:13:34,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912543764] [2020-11-11 18:13:34,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:13:34,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:34,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:13:34,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:13:34,154 INFO L87 Difference]: Start difference. First operand 3765 states and 12652 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:13:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:34,330 INFO L93 Difference]: Finished difference Result 5550 states and 18620 transitions. [2020-11-11 18:13:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:13:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2020-11-11 18:13:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:34,358 INFO L225 Difference]: With dead ends: 5550 [2020-11-11 18:13:34,359 INFO L226 Difference]: Without dead ends: 3275 [2020-11-11 18:13:34,359 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:13:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-11-11 18:13:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3275. [2020-11-11 18:13:34,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 3.308491142333537) internal successors, (10832), 3274 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 10832 transitions. [2020-11-11 18:13:34,499 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 10832 transitions. Word has length 47 [2020-11-11 18:13:34,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:34,500 INFO L481 AbstractCegarLoop]: Abstraction has 3275 states and 10832 transitions. [2020-11-11 18:13:34,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:13:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 10832 transitions. [2020-11-11 18:13:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:13:34,510 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:34,510 INFO L494 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] [2020-11-11 18:13:34,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:13:34,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:34,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1266801623, now seen corresponding path program 2 times [2020-11-11 18:13:34,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:34,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909134568] [2020-11-11 18:13:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:34,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909134568] [2020-11-11 18:13:34,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:34,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:13:34,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420303229] [2020-11-11 18:13:34,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:13:34,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:34,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:13:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:13:34,679 INFO L87 Difference]: Start difference. First operand 3275 states and 10832 transitions. 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) [2020-11-11 18:13:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:34,833 INFO L93 Difference]: Finished difference Result 4063 states and 13251 transitions. [2020-11-11 18:13:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:13:34,834 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 [2020-11-11 18:13:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:34,848 INFO L225 Difference]: With dead ends: 4063 [2020-11-11 18:13:34,848 INFO L226 Difference]: Without dead ends: 2971 [2020-11-11 18:13:34,848 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:13:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-11-11 18:13:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2971. [2020-11-11 18:13:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2970 states have (on average 3.2511784511784514) internal successors, (9656), 2970 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 9656 transitions. [2020-11-11 18:13:34,963 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 9656 transitions. Word has length 47 [2020-11-11 18:13:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:34,963 INFO L481 AbstractCegarLoop]: Abstraction has 2971 states and 9656 transitions. [2020-11-11 18:13:34,964 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) [2020-11-11 18:13:34,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 9656 transitions. [2020-11-11 18:13:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:13:34,972 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:34,973 INFO L494 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] [2020-11-11 18:13:34,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:13:34,973 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:34,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2035932160, now seen corresponding path program 1 times [2020-11-11 18:13:34,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:34,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590490681] [2020-11-11 18:13:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:35,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590490681] [2020-11-11 18:13:35,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:35,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:13:35,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180234183] [2020-11-11 18:13:35,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:13:35,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:35,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:13:35,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:13:35,128 INFO L87 Difference]: Start difference. First operand 2971 states and 9656 transitions. 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) [2020-11-11 18:13:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:35,349 INFO L93 Difference]: Finished difference Result 2995 states and 9441 transitions. [2020-11-11 18:13:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:13:35,350 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 [2020-11-11 18:13:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:35,360 INFO L225 Difference]: With dead ends: 2995 [2020-11-11 18:13:35,360 INFO L226 Difference]: Without dead ends: 2095 [2020-11-11 18:13:35,361 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:13:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-11-11 18:13:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2095. [2020-11-11 18:13:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 3.0916905444126073) internal successors, (6474), 2094 states have internal predecessors, (6474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 6474 transitions. [2020-11-11 18:13:35,448 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 6474 transitions. Word has length 48 [2020-11-11 18:13:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:35,449 INFO L481 AbstractCegarLoop]: Abstraction has 2095 states and 6474 transitions. [2020-11-11 18:13:35,449 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) [2020-11-11 18:13:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 6474 transitions. [2020-11-11 18:13:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:13:35,456 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:35,457 INFO L494 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] [2020-11-11 18:13:35,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:13:35,457 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:35,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:35,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1922996831, now seen corresponding path program 1 times [2020-11-11 18:13:35,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:35,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889764830] [2020-11-11 18:13:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:35,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889764830] [2020-11-11 18:13:35,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:35,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:13:35,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733942712] [2020-11-11 18:13:35,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:13:35,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:35,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:13:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:13:35,690 INFO L87 Difference]: Start difference. First operand 2095 states and 6474 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2020-11-11 18:13:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:35,937 INFO L93 Difference]: Finished difference Result 1609 states and 4791 transitions. [2020-11-11 18:13:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:13:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2020-11-11 18:13:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:35,943 INFO L225 Difference]: With dead ends: 1609 [2020-11-11 18:13:35,943 INFO L226 Difference]: Without dead ends: 1141 [2020-11-11 18:13:35,944 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:13:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2020-11-11 18:13:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2020-11-11 18:13:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 2.889473684210526) internal successors, (3294), 1140 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3294 transitions. [2020-11-11 18:13:35,986 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3294 transitions. Word has length 50 [2020-11-11 18:13:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:35,987 INFO L481 AbstractCegarLoop]: Abstraction has 1141 states and 3294 transitions. [2020-11-11 18:13:35,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2020-11-11 18:13:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3294 transitions. [2020-11-11 18:13:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:13:35,991 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:35,991 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:13:35,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:13:35,992 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:35,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2028376861, now seen corresponding path program 1 times [2020-11-11 18:13:35,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:35,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732502139] [2020-11-11 18:13:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:36,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732502139] [2020-11-11 18:13:36,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:36,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:13:36,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553233629] [2020-11-11 18:13:36,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:13:36,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:36,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:13:36,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:13:36,140 INFO L87 Difference]: Start difference. First operand 1141 states and 3294 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:36,293 INFO L93 Difference]: Finished difference Result 1584 states and 4593 transitions. [2020-11-11 18:13:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:13:36,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-11 18:13:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:36,297 INFO L225 Difference]: With dead ends: 1584 [2020-11-11 18:13:36,297 INFO L226 Difference]: Without dead ends: 791 [2020-11-11 18:13:36,297 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:13:36,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-11-11 18:13:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2020-11-11 18:13:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 2.8341772151898734) internal successors, (2239), 790 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 2239 transitions. [2020-11-11 18:13:36,333 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 2239 transitions. Word has length 54 [2020-11-11 18:13:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:36,336 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 2239 transitions. [2020-11-11 18:13:36,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,336 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 2239 transitions. [2020-11-11 18:13:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:13:36,339 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:36,339 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:13:36,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:13:36,339 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1950903709, now seen corresponding path program 2 times [2020-11-11 18:13:36,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:36,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116980581] [2020-11-11 18:13:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:36,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116980581] [2020-11-11 18:13:36,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:36,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:13:36,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861326378] [2020-11-11 18:13:36,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:13:36,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:36,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:13:36,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:13:36,443 INFO L87 Difference]: Start difference. First operand 791 states and 2239 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:36,550 INFO L93 Difference]: Finished difference Result 1162 states and 3320 transitions. [2020-11-11 18:13:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:13:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-11 18:13:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:36,553 INFO L225 Difference]: With dead ends: 1162 [2020-11-11 18:13:36,553 INFO L226 Difference]: Without dead ends: 615 [2020-11-11 18:13:36,553 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:13:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-11-11 18:13:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2020-11-11 18:13:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 2.773615635179153) internal successors, (1703), 614 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1703 transitions. [2020-11-11 18:13:36,572 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1703 transitions. Word has length 54 [2020-11-11 18:13:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:36,572 INFO L481 AbstractCegarLoop]: Abstraction has 615 states and 1703 transitions. [2020-11-11 18:13:36,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1703 transitions. [2020-11-11 18:13:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:13:36,574 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:13:36,574 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:13:36,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 18:13:36,575 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:13:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:13:36,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1622631359, now seen corresponding path program 3 times [2020-11-11 18:13:36,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:13:36,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445908572] [2020-11-11 18:13:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:13:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:13:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:13:36,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445908572] [2020-11-11 18:13:36,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:13:36,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:13:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963622238] [2020-11-11 18:13:36,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:13:36,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:13:36,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:13:36,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:13:36,715 INFO L87 Difference]: Start difference. First operand 615 states and 1703 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:13:36,817 INFO L93 Difference]: Finished difference Result 507 states and 1379 transitions. [2020-11-11 18:13:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-11 18:13:36,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-11 18:13:36,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:13:36,818 INFO L225 Difference]: With dead ends: 507 [2020-11-11 18:13:36,818 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:13:36,819 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:13:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:13:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:13:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:13:36,820 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-11 18:13:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:13:36,820 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:13:36,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:13:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:13:36,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:13:36,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 18:13:36,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:13:36 BasicIcfg [2020-11-11 18:13:36,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:13:36,829 INFO L168 Benchmark]: Toolchain (without parser) took 8789.77 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 887.1 MB). Free memory was 277.2 MB in the beginning and 945.2 MB in the end (delta: -668.1 MB). Peak memory consumption was 221.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:13:36,830 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:13:36,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.74 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 245.7 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:13:36,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.81 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 283.7 MB in the end (delta: -38.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:13:36,832 INFO L168 Benchmark]: Boogie Preprocessor took 51.10 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 282.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:13:36,832 INFO L168 Benchmark]: RCFGBuilder took 659.30 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 259.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:13:36,833 INFO L168 Benchmark]: TraceAbstraction took 7348.66 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 887.1 MB). Free memory was 259.6 MB in the beginning and 945.2 MB in the end (delta: -685.7 MB). Peak memory consumption was 202.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:13:36,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 638.74 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 245.7 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 78.81 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 283.7 MB in the end (delta: -38.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 51.10 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 282.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 659.30 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 259.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7348.66 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 887.1 MB). Free memory was 259.6 MB in the beginning and 945.2 MB in the end (delta: -685.7 MB). Peak memory consumption was 202.5 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 955 SDtfs, 1237 SDslu, 3139 SDs, 0 SdLazy, 386 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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: 1.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 485 NumberOfCodeBlocks, 485 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 57217 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...