/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 08:29:15,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 08:29:15,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 08:29:15,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 08:29:15,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 08:29:15,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 08:29:15,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 08:29:15,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 08:29:15,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 08:29:15,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 08:29:15,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 08:29:15,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 08:29:15,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 08:29:15,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 08:29:15,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 08:29:15,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 08:29:15,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 08:29:15,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 08:29:15,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 08:29:15,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 08:29:15,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 08:29:15,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 08:29:15,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 08:29:15,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 08:29:15,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 08:29:15,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 08:29:15,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 08:29:15,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 08:29:15,580 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-Separate.epf [2022-01-18 08:29:15,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 08:29:15,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 08:29:15,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 08:29:15,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 08:29:15,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 08:29:15,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 08:29:15,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 08:29:15,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 08:29:15,610 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 08:29:15,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 08:29:15,611 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 08:29:15,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 08:29:15,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 08:29:15,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 08:29:15,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 08:29:15,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 08:29:15,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 08:29:15,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 08:29:15,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 08:29:15,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 08:29:15,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 08:29:15,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 08:29:15,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 08:29:15,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 08:29:15,615 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 08:29:15,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 08:29:15,615 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 08:29:15,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 08:29:15,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 08:29:15,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 08:29:15,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 08:29:15,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 08:29:15,837 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 08:29:15,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2022-01-18 08:29:15,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/107f73e49/4d21418786434835831b06514619991d/FLAG6afd428b7 [2022-01-18 08:29:16,348 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 08:29:16,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2022-01-18 08:29:16,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/107f73e49/4d21418786434835831b06514619991d/FLAG6afd428b7 [2022-01-18 08:29:16,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/107f73e49/4d21418786434835831b06514619991d [2022-01-18 08:29:16,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 08:29:16,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 08:29:16,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 08:29:16,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 08:29:16,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 08:29:16,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 08:29:16" (1/1) ... [2022-01-18 08:29:16,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6ae44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:16, skipping insertion in model container [2022-01-18 08:29:16,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 08:29:16" (1/1) ... [2022-01-18 08:29:16,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 08:29:16,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 08:29:17,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2022-01-18 08:29:17,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 08:29:17,088 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 08:29:17,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2022-01-18 08:29:17,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 08:29:17,167 INFO L208 MainTranslator]: Completed translation [2022-01-18 08:29:17,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17 WrapperNode [2022-01-18 08:29:17,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 08:29:17,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 08:29:17,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 08:29:17,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 08:29:17,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,198 INFO L137 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-01-18 08:29:17,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 08:29:17,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 08:29:17,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 08:29:17,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 08:29:17,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 08:29:17,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 08:29:17,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 08:29:17,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 08:29:17,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (1/1) ... [2022-01-18 08:29:17,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 08:29:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:29:17,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 08:29:17,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 08:29:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-18 08:29:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-18 08:29:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-18 08:29:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-18 08:29:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 08:29:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 08:29:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 08:29:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 08:29:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 08:29:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 08:29:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 08:29:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 08:29:17,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 08:29:17,285 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 08:29:17,379 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 08:29:17,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 08:29:17,536 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 08:29:17,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 08:29:17,544 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 08:29:17,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 08:29:17 BoogieIcfgContainer [2022-01-18 08:29:17,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 08:29:17,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 08:29:17,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 08:29:17,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 08:29:17,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 08:29:16" (1/3) ... [2022-01-18 08:29:17,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce1a019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 08:29:17, skipping insertion in model container [2022-01-18 08:29:17,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 08:29:17" (2/3) ... [2022-01-18 08:29:17,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce1a019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 08:29:17, skipping insertion in model container [2022-01-18 08:29:17,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 08:29:17" (3/3) ... [2022-01-18 08:29:17,557 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2022-01-18 08:29:17,561 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 08:29:17,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 08:29:17,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 08:29:17,562 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 08:29:17,587 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,588 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,588 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,588 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,588 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,588 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,588 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,589 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,589 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,589 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,589 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,590 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,590 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,590 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,591 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,592 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,592 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,592 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,593 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,593 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,593 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,594 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,594 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,594 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,594 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,594 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,595 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,595 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,595 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,595 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,596 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,596 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,596 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,596 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,597 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,597 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,597 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,597 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,597 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,598 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,598 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,598 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,598 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,598 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,598 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,599 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,601 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,602 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,602 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,602 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,602 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,602 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,604 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,605 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,605 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,605 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,605 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 08:29:17,606 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 08:29:17,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 08:29:17,648 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 08:29:17,648 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 08:29:17,657 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 70 transitions, 150 flow [2022-01-18 08:29:17,744 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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) [2022-01-18 08:29:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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) [2022-01-18 08:29:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 08:29:17,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:17,761 INFO L514 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] [2022-01-18 08:29:17,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:17,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:17,767 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-01-18 08:29:17,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:17,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458981874] [2022-01-18 08:29:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:17,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:18,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:18,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458981874] [2022-01-18 08:29:18,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458981874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:29:18,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:29:18,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:29:18,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479959552] [2022-01-18 08:29:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:29:18,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:29:18,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:29:18,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:29:18,158 INFO L87 Difference]: Start difference. First operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-01-18 08:29:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:18,288 INFO L93 Difference]: Finished difference Result 1542 states and 4129 transitions. [2022-01-18 08:29:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 08:29:18,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 35 [2022-01-18 08:29:18,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:18,328 INFO L225 Difference]: With dead ends: 1542 [2022-01-18 08:29:18,329 INFO L226 Difference]: Without dead ends: 1245 [2022-01-18 08:29:18,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-18 08:29:18,333 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 156 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:18,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 303 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:29:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-18 08:29:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 945. [2022-01-18 08:29:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 2.702330508474576) internal successors, (2551), 944 states have internal predecessors, (2551), 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) [2022-01-18 08:29:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2551 transitions. [2022-01-18 08:29:18,441 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2551 transitions. Word has length 35 [2022-01-18 08:29:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:18,442 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 2551 transitions. [2022-01-18 08:29:18,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-01-18 08:29:18,442 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2551 transitions. [2022-01-18 08:29:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 08:29:18,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:18,446 INFO L514 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] [2022-01-18 08:29:18,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 08:29:18,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1832706688, now seen corresponding path program 1 times [2022-01-18 08:29:18,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212876341] [2022-01-18 08:29:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:18,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:18,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:18,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212876341] [2022-01-18 08:29:18,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212876341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:29:18,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:29:18,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:29:18,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528179682] [2022-01-18 08:29:18,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:29:18,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:29:18,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:29:18,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:29:18,557 INFO L87 Difference]: Start difference. First operand 945 states and 2551 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-18 08:29:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:18,618 INFO L93 Difference]: Finished difference Result 1197 states and 3183 transitions. [2022-01-18 08:29:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 08:29:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2022-01-18 08:29:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:18,624 INFO L225 Difference]: With dead ends: 1197 [2022-01-18 08:29:18,624 INFO L226 Difference]: Without dead ends: 945 [2022-01-18 08:29:18,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 08:29:18,625 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 77 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:18,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 357 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:29:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-01-18 08:29:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 803. [2022-01-18 08:29:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.7219451371571073) internal successors, (2183), 802 states have internal predecessors, (2183), 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) [2022-01-18 08:29:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2183 transitions. [2022-01-18 08:29:18,651 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2183 transitions. Word has length 39 [2022-01-18 08:29:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:18,651 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2183 transitions. [2022-01-18 08:29:18,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-18 08:29:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2183 transitions. [2022-01-18 08:29:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 08:29:18,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:18,654 INFO L514 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] [2022-01-18 08:29:18,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 08:29:18,654 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1559123106, now seen corresponding path program 1 times [2022-01-18 08:29:18,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:18,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314702682] [2022-01-18 08:29:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:18,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:18,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:18,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314702682] [2022-01-18 08:29:18,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314702682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:29:18,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:29:18,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:29:18,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254787953] [2022-01-18 08:29:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:29:18,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:29:18,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:29:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:29:18,744 INFO L87 Difference]: Start difference. First operand 803 states and 2183 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-18 08:29:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:18,857 INFO L93 Difference]: Finished difference Result 1945 states and 5271 transitions. [2022-01-18 08:29:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 08:29:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2022-01-18 08:29:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:18,867 INFO L225 Difference]: With dead ends: 1945 [2022-01-18 08:29:18,867 INFO L226 Difference]: Without dead ends: 1521 [2022-01-18 08:29:18,868 INFO L932 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 [2022-01-18 08:29:18,872 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 130 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:18,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 383 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:29:18,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-01-18 08:29:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1021. [2022-01-18 08:29:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 2.7) internal successors, (2754), 1020 states have internal predecessors, (2754), 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) [2022-01-18 08:29:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 2754 transitions. [2022-01-18 08:29:18,913 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 2754 transitions. Word has length 39 [2022-01-18 08:29:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:18,913 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 2754 transitions. [2022-01-18 08:29:18,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-18 08:29:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 2754 transitions. [2022-01-18 08:29:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 08:29:18,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:18,917 INFO L514 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] [2022-01-18 08:29:18,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 08:29:18,917 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1227227950, now seen corresponding path program 2 times [2022-01-18 08:29:18,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:18,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796432683] [2022-01-18 08:29:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:18,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:19,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796432683] [2022-01-18 08:29:19,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796432683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:29:19,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:29:19,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 08:29:19,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114091222] [2022-01-18 08:29:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:29:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 08:29:19,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 08:29:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 08:29:19,039 INFO L87 Difference]: Start difference. First operand 1021 states and 2754 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-18 08:29:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:19,101 INFO L93 Difference]: Finished difference Result 1341 states and 3466 transitions. [2022-01-18 08:29:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 08:29:19,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2022-01-18 08:29:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:19,108 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 08:29:19,108 INFO L226 Difference]: Without dead ends: 1031 [2022-01-18 08:29:19,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 08:29:19,116 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 107 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:19,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 331 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:29:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-01-18 08:29:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 879. [2022-01-18 08:29:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.7004555808656034) internal successors, (2371), 878 states have internal predecessors, (2371), 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) [2022-01-18 08:29:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 2371 transitions. [2022-01-18 08:29:19,143 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 2371 transitions. Word has length 39 [2022-01-18 08:29:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:19,144 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 2371 transitions. [2022-01-18 08:29:19,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-18 08:29:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 2371 transitions. [2022-01-18 08:29:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 08:29:19,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:19,147 INFO L514 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] [2022-01-18 08:29:19,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 08:29:19,147 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:19,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2144864227, now seen corresponding path program 1 times [2022-01-18 08:29:19,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:19,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473724138] [2022-01-18 08:29:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:19,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:19,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:19,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473724138] [2022-01-18 08:29:19,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473724138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:29:19,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 08:29:19,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 08:29:19,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551639553] [2022-01-18 08:29:19,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:29:19,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 08:29:19,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 08:29:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 08:29:19,267 INFO L87 Difference]: Start difference. First operand 879 states and 2371 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:29:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:19,384 INFO L93 Difference]: Finished difference Result 1527 states and 4059 transitions. [2022-01-18 08:29:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 08:29:19,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-18 08:29:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:19,390 INFO L225 Difference]: With dead ends: 1527 [2022-01-18 08:29:19,390 INFO L226 Difference]: Without dead ends: 1134 [2022-01-18 08:29:19,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 08:29:19,391 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 204 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:19,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 374 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:29:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-01-18 08:29:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1036. [2022-01-18 08:29:19,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 2.7304347826086954) internal successors, (2826), 1035 states have internal predecessors, (2826), 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) [2022-01-18 08:29:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2826 transitions. [2022-01-18 08:29:19,418 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2826 transitions. Word has length 43 [2022-01-18 08:29:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:19,419 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 2826 transitions. [2022-01-18 08:29:19,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 08:29:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2826 transitions. [2022-01-18 08:29:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 08:29:19,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:19,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:29:19,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 08:29:19,422 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2080476017, now seen corresponding path program 1 times [2022-01-18 08:29:19,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:19,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178012350] [2022-01-18 08:29:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:19,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:19,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:19,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178012350] [2022-01-18 08:29:19,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178012350] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:29:19,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496581566] [2022-01-18 08:29:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:19,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:29:19,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:29:19,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 08:29:19,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 08:29:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:19,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 08:29:19,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:29:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:19,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:29:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:20,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496581566] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:29:20,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:29:20,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 08:29:20,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985409291] [2022-01-18 08:29:20,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:29:20,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 08:29:20,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:20,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 08:29:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-18 08:29:20,132 INFO L87 Difference]: Start difference. First operand 1036 states and 2826 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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) [2022-01-18 08:29:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:20,407 INFO L93 Difference]: Finished difference Result 2380 states and 6538 transitions. [2022-01-18 08:29:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 08:29:20,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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 [2022-01-18 08:29:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:20,414 INFO L225 Difference]: With dead ends: 2380 [2022-01-18 08:29:20,414 INFO L226 Difference]: Without dead ends: 1391 [2022-01-18 08:29:20,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2022-01-18 08:29:20,415 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 442 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:20,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 661 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:29:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-18 08:29:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1225. [2022-01-18 08:29:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 2.732843137254902) internal successors, (3345), 1224 states have internal predecessors, (3345), 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) [2022-01-18 08:29:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3345 transitions. [2022-01-18 08:29:20,446 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3345 transitions. Word has length 48 [2022-01-18 08:29:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 3345 transitions. [2022-01-18 08:29:20,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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) [2022-01-18 08:29:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3345 transitions. [2022-01-18 08:29:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-18 08:29:20,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:20,449 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:29:20,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 08:29:20,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 08:29:20,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2080275648, now seen corresponding path program 1 times [2022-01-18 08:29:20,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:20,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152716010] [2022-01-18 08:29:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:20,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 08:29:20,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152716010] [2022-01-18 08:29:20,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152716010] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:29:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134223916] [2022-01-18 08:29:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:20,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:29:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:29:20,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 08:29:20,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 08:29:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:20,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 08:29:20,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:29:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 08:29:21,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:29:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 08:29:21,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134223916] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:29:21,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:29:21,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 08:29:21,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816514696] [2022-01-18 08:29:21,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:29:21,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 08:29:21,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 08:29:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-18 08:29:21,271 INFO L87 Difference]: Start difference. First operand 1225 states and 3345 transitions. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2022-01-18 08:29:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:21,902 INFO L93 Difference]: Finished difference Result 5394 states and 14706 transitions. [2022-01-18 08:29:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 08:29:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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 63 [2022-01-18 08:29:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:21,918 INFO L225 Difference]: With dead ends: 5394 [2022-01-18 08:29:21,918 INFO L226 Difference]: Without dead ends: 3609 [2022-01-18 08:29:21,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=603, Invalid=1559, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 08:29:21,920 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 734 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:21,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1043 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:29:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2022-01-18 08:29:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 2319. [2022-01-18 08:29:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 2.7791199309749786) internal successors, (6442), 2318 states have internal predecessors, (6442), 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) [2022-01-18 08:29:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 6442 transitions. [2022-01-18 08:29:21,986 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 6442 transitions. Word has length 63 [2022-01-18 08:29:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:21,987 INFO L470 AbstractCegarLoop]: Abstraction has 2319 states and 6442 transitions. [2022-01-18 08:29:21,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2022-01-18 08:29:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 6442 transitions. [2022-01-18 08:29:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 08:29:21,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:21,993 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:29:22,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 08:29:22,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-18 08:29:22,215 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1595975090, now seen corresponding path program 2 times [2022-01-18 08:29:22,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:22,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808633917] [2022-01-18 08:29:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:22,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:22,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:22,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808633917] [2022-01-18 08:29:22,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808633917] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:29:22,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687657331] [2022-01-18 08:29:22,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 08:29:22,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:29:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:29:22,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 08:29:22,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 08:29:22,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 08:29:22,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 08:29:22,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 08:29:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:29:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:22,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 08:29:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 08:29:22,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687657331] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 08:29:22,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 08:29:22,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2022-01-18 08:29:22,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19377694] [2022-01-18 08:29:22,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 08:29:22,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 08:29:22,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:22,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 08:29:22,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-01-18 08:29:22,907 INFO L87 Difference]: Start difference. First operand 2319 states and 6442 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 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) [2022-01-18 08:29:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:23,379 INFO L93 Difference]: Finished difference Result 5581 states and 15194 transitions. [2022-01-18 08:29:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 08:29:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 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 78 [2022-01-18 08:29:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:23,400 INFO L225 Difference]: With dead ends: 5581 [2022-01-18 08:29:23,401 INFO L226 Difference]: Without dead ends: 4564 [2022-01-18 08:29:23,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=594, Invalid=1758, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 08:29:23,402 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 730 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:23,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 986 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:29:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-01-18 08:29:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 2739. [2022-01-18 08:29:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2738 states have (on average 2.7363038714390067) internal successors, (7492), 2738 states have internal predecessors, (7492), 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) [2022-01-18 08:29:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 7492 transitions. [2022-01-18 08:29:23,482 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 7492 transitions. Word has length 78 [2022-01-18 08:29:23,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:23,482 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 7492 transitions. [2022-01-18 08:29:23,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 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) [2022-01-18 08:29:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 7492 transitions. [2022-01-18 08:29:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-18 08:29:23,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:23,488 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:29:23,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 08:29:23,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:29:23,712 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash -830548696, now seen corresponding path program 3 times [2022-01-18 08:29:23,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:23,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184601229] [2022-01-18 08:29:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:23,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 80 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 08:29:23,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:23,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184601229] [2022-01-18 08:29:23,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184601229] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:29:23,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781500384] [2022-01-18 08:29:23,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 08:29:23,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:29:23,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:29:23,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 08:29:23,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 08:29:23,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 08:29:23,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 08:29:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 08:29:23,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:29:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 08:29:24,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 08:29:24,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781500384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:29:24,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 08:29:24,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2022-01-18 08:29:24,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305584200] [2022-01-18 08:29:24,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:29:24,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 08:29:24,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 08:29:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-01-18 08:29:24,042 INFO L87 Difference]: Start difference. First operand 2739 states and 7492 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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) [2022-01-18 08:29:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:24,187 INFO L93 Difference]: Finished difference Result 6508 states and 17356 transitions. [2022-01-18 08:29:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 08:29:24,188 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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 88 [2022-01-18 08:29:24,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:24,196 INFO L225 Difference]: With dead ends: 6508 [2022-01-18 08:29:24,197 INFO L226 Difference]: Without dead ends: 2002 [2022-01-18 08:29:24,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2022-01-18 08:29:24,197 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 194 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:24,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 866 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 08:29:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-01-18 08:29:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1642. [2022-01-18 08:29:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 2.563071297989031) internal successors, (4206), 1641 states have internal predecessors, (4206), 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) [2022-01-18 08:29:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 4206 transitions. [2022-01-18 08:29:24,235 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 4206 transitions. Word has length 88 [2022-01-18 08:29:24,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:24,235 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 4206 transitions. [2022-01-18 08:29:24,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 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) [2022-01-18 08:29:24,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 4206 transitions. [2022-01-18 08:29:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-18 08:29:24,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 08:29:24,238 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 08:29:24,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 08:29:24,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:29:24,462 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 08:29:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 08:29:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash 554658707, now seen corresponding path program 4 times [2022-01-18 08:29:24,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 08:29:24,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176495079] [2022-01-18 08:29:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 08:29:24,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 08:29:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 08:29:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 74 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 08:29:24,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 08:29:24,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176495079] [2022-01-18 08:29:24,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176495079] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 08:29:24,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913540869] [2022-01-18 08:29:24,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 08:29:24,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 08:29:24,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 08:29:24,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 08:29:24,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 08:29:24,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 08:29:24,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 08:29:24,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 08:29:24,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 08:29:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 08:29:24,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 08:29:24,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913540869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 08:29:24,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 08:29:24,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2022-01-18 08:29:24,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890396601] [2022-01-18 08:29:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 08:29:24,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 08:29:24,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 08:29:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 08:29:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-01-18 08:29:24,789 INFO L87 Difference]: Start difference. First operand 1642 states and 4206 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2022-01-18 08:29:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 08:29:24,979 INFO L93 Difference]: Finished difference Result 3641 states and 8989 transitions. [2022-01-18 08:29:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 08:29:24,980 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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 88 [2022-01-18 08:29:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 08:29:24,980 INFO L225 Difference]: With dead ends: 3641 [2022-01-18 08:29:24,980 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 08:29:24,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2022-01-18 08:29:24,981 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 216 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 08:29:24,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 1202 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 08:29:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 08:29:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 08:29:24,982 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) [2022-01-18 08:29:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 08:29:24,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2022-01-18 08:29:24,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 08:29:24,982 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 08:29:24,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2022-01-18 08:29:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 08:29:24,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 08:29:24,985 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 08:29:24,985 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 08:29:24,985 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 08:29:25,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 08:29:25,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 08:29:25,210 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1] [2022-01-18 08:29:25,211 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 08:29:25,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 08:29:25,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 08:29:25 BasicIcfg [2022-01-18 08:29:25,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 08:29:25,214 INFO L158 Benchmark]: Toolchain (without parser) took 8494.07ms. Allocated memory was 352.3MB in the beginning and 459.3MB in the end (delta: 107.0MB). Free memory was 295.4MB in the beginning and 416.0MB in the end (delta: -120.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 08:29:25,214 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 352.3MB. Free memory is still 313.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 08:29:25,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.16ms. Allocated memory was 352.3MB in the beginning and 459.3MB in the end (delta: 107.0MB). Free memory was 295.3MB in the beginning and 422.5MB in the end (delta: -127.2MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. [2022-01-18 08:29:25,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.74ms. Allocated memory is still 459.3MB. Free memory was 422.5MB in the beginning and 420.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 08:29:25,215 INFO L158 Benchmark]: Boogie Preprocessor took 20.02ms. Allocated memory is still 459.3MB. Free memory was 420.4MB in the beginning and 419.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 08:29:25,215 INFO L158 Benchmark]: RCFGBuilder took 326.07ms. Allocated memory is still 459.3MB. Free memory was 419.4MB in the beginning and 405.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 08:29:25,215 INFO L158 Benchmark]: TraceAbstraction took 7666.08ms. Allocated memory is still 459.3MB. Free memory was 405.8MB in the beginning and 416.0MB in the end (delta: -10.3MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 08:29:25,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 352.3MB. Free memory is still 313.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 440.16ms. Allocated memory was 352.3MB in the beginning and 459.3MB in the end (delta: 107.0MB). Free memory was 295.3MB in the beginning and 422.5MB in the end (delta: -127.2MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.74ms. Allocated memory is still 459.3MB. Free memory was 422.5MB in the beginning and 420.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.02ms. Allocated memory is still 459.3MB. Free memory was 420.4MB in the beginning and 419.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 326.07ms. Allocated memory is still 459.3MB. Free memory was 419.4MB in the beginning and 405.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 7666.08ms. Allocated memory is still 459.3MB. Free memory was 405.8MB in the beginning and 416.0MB in the end (delta: -10.3MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2990 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2990 mSDsluCounter, 6506 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5485 mSDsCounter, 231 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 993 IncrementalHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 231 mSolverCounterUnsat, 1137 mSDtfsCounter, 993 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 763 GetRequests, 556 SyntacticMatches, 2 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2739occurred in iteration=8, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 4833 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 925 NumberOfCodeBlocks, 921 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1096 ConstructedInterpolants, 0 QuantifiedInterpolants, 3052 SizeOfPredicates, 40 NumberOfNonLiveVariables, 870 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 361/644 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 08:29:25,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...